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User Interface

Using ForkLift will come very easily. If you are used to Finder, everything will look familiar, and all the extra functionality will work as you expect it. ForkLift's user interface has got highly modular by now. You can have it anyways, from a minimal single pane look to the pedal-to-the-metal 3 ton engineering monster it can become, depending on what you need at the moment.

Main Panes

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The main panes display the item lists for your current location. You can always see your current location in the path bar sitting on top of each main pane. When both panes are visible, the active pane is shown by a blue highlighted path bar. The color of the path bar and the selection can be changed at System Preferences > General > Highlight color.

Path Bar

The path bar is displayed at the top of each main pane and shows the path of your current location. You can click the items in the bar to quickly navigate up in your filesystem. The path bar also supports drag and drop.

Show Devices

Click on the icon in the path bar or use the Control-D shortcut to list connected devices and servers.

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View Modes

There are three ways to view items in Forklift: as icons, as a list, or in columns. To choose a view, use the View buttons in the toolbar or the View menu. In dual pane mode, you can split panes vertically or horizontally.

View Options

There are a number of options you can use to customize the main panes to your preferences. Some affect only the appearance of the file list, others define behaviors and can also affect performance. Most visual elements are set in the view options panel, accessed from the right-click context menu of the pane itself, or from View > Show View Options (Command-J).

OptionDescription
Arrange byOrganize folders and files by kind, date, size, or tags. Choose None to switch back to alphanumeric organization.
Sort byYou can sort items by name, kind, date, size, tags, owner, group, or permissions.
Icon SizeYou can adjust the size of icons and thumbnails in Icon View. You can also use pinch gestures, or the slider on the status bar.
Text SizeTo make ForkLift go easy on your eyes, you can set text size for the main pane's item list from 10 pt to 16 pt text.
ColumnsCheck the categories of file metadata you want to see in your main panes.
Show hidden filesThis option enables you to see system folders and files (e.g.: .DS_Store files) in the item list.
Use alternating backgroundIf you prefer, you can set a background for the file list with alternating lines in light gray color in List View.
Treat packages as foldersWhen checked in, double clicking packages (such as applications and package formatted files, like .pages files) will open the package and display its contents, instead of launching the application or opening the file. Showing the contents of individual packages is possible by right-clicking the package, and choosing Show Package Contents from the context menu.
Show Folders on topWhen checked in, your folders are kept separate from the files, and grouped separately at the top of the item list.
Use relative datesWhen checked in, you will see Today and Yesterday in the date columns, instead of the standard date format.
Calculate all sizesWhen enabled, ForkLift will calculate all local folder sizes by default. Calculating the size of individual folders is possible by right-clicking the folder, and choosing Calculate Folder Size from the context menu. This option is not recommended for connected volumes, as getting directory size information may seriously slow down the navigation.
Show icon previewDisplays thumbnails for available file formats in the item list. This option also enables thumbnail previews on connected volumes and inside archives. Thumbnail previews on remote servers is not recommended for slow servers, as getting the previews may seriously slow down navigation on a slow server
SCM StatusDisplays git status of recently changed items in List View.
Resize columns to fitWhen checked in, column width will be adjusted to the longest filename in Column View.
Use as DefaultsIf you set options for view, then click Use as Defaults, all folders and files in the pane appear with the same options. Choose View > Restore Default View Settings in the other pane to use the previously set options.

Sidebar

ForkLift has a sidebar with items you frequently use, including drives, folders, and remote connections. Click any of these items to open the volume in the active pane. To create a favorite item or a favorite group, click on the plus button at the bottom of the sidebar. You can add other folders by dragging them into the Favorites group. You can also add files, applications, and smart folders to sidebar.

Drag a favorite item to the desired location to rearrange it. You can also rearrange a sidebar group by dragging its title close to the left side of the sidebar.

Free space info of devices are displayed by default. To hide device info, choose Hide Device Info from View menu.

Toolbar

You can find toolbar icons for most frequent operations and tools, and arrange them as you like. Right-click the toolbar or go to View > Customize Toolbar. in the menu. Enable Title bar in View menu to display icon and text in the Toolbar.

Activities

With Activities you can keep your transfers organized, reorder transfers and even pause them. To display activities queue, choose View > Show Activities or click on its toolbar button. Maze runner - ld35 mac os. For each item that is in the process of being copied the size of the item, the amount already copied, the transfer rate and a progress bar are displayed for information.

One of the basics of ForkLift's superior speed is that it connects to the server through several connections, and uses them all in concert to speed up transfers. Since this represents an increased load on the target server, controls are provided to adjust the number of connections depending on your server. You can set the maximum amount of simultaneous transfers by adjusting its value in Preferences.

Finished transfers will diappear from the queue automatically. To remove ongoing transfers, select them and press Backspace. You can also reorder a transfer by dragging it to the desired position. Hold down the Command key to select more transfers.

Search

Search enables you to search for a search string at the location that is displayed in the pane. Press Command-F or click on it on toolbar and start typing. Click on the arrow in the search field to choose between Search by Name, Extension, Kind, Tags, or Content to search in the current directory. If you choose Search by Spotlight, ForkLift will use Spotlight's metadata query and will search on all volumes. To filter visible items, uncheck Search in Subfolders option. You can also use Regular Expressions in the search field.

Tabs

Each pane has its own set of Tabs located right above the path bar. By default, the tab bar is hidden until a new tab is created (Command-T). The new tab opens the starting directory which can be set at General preferences. You can drag and rearrange tabs inside and between panes. ForkLift will remember tabs on application exit, and restore them on next launch. Use the Ctrl-Tab keyboard shortcut to show the next tab, and Ctrl-Shift-Tab to show the previous one. Command-Double-Click on a folder, and Command-Click on a sidebar item to open it in a new tab.

Preview

The preview panel shows preview of a selected image, document, audio, video, or other type of file, and shows its file name, file size, date created, date modified, file permissions, file owner and group.

To open preview panel, choose Show Preview from View menu. If you want Preview to automatically start playing a selected audio or video file, quit ForkLift and paste the following command in Terminal and hit Enter: defaults write com.binarynights.ForkLift-3 PreviewAutostart true

Editing in Preview

You can edit a document within the preview, just click in it and start typing, then click on Save. This feature also works on remote connections, so ForkLift will immediately upload changes after clicking Save.

Get Info and Inspector

The Get Info panel is basically a proximation of Finder's. While this is a transient state, this is where you can presently set file and folder permissions, add or remove tags, and view general file info and metadata.

You can display the Get Info panel as an Inspector panel by pressing Command-Option-I. In this case the panel will always float on top of any other window and the data displayed is following the navigation in the ForkLift main panels. Growing mac os.

Favorite Manager

The favorite manager allows you to conveniently organize your favorites. To access the favorite manager, you can either use the Command-Option-F keyboard shortcut or choose Show Favorites from Favorites menu. You can change the order of items by a simple drag and drop. To edit a favorite, select it in the list, and choose Edit from the right-click context menu. To add a new favorite or group, click on the plus button at the bottom.

You can sync all your favorites between your Macs through Dropbox. Go to General preferences chapter for more details.

Quick Open

One of the most convenient features of ForkLift 3 is Quick Open. You can easily access your favorites, menu commands, open a selected file with a desired application, or apply a previously saved Multi Rename preset on selected files. Press Esc to show Quick Open popover. You don't even have to type the full name of the favorite item or menu command, just type the initials of it and ForkLift will already know what you are looking for. Navigate with Arrow Up and Down keys and press Enter to open.

Dropbox Menu

This feature requires Dropbox's native app. If it has been already installed, you will see the 'Copy Dropbox Link' option in the context menu. Click on it for the first time and you will be redirected to Dropbox's website to continue the authorization process and connect ForkLift to your Dropbox. Click Allow on that website and go back to ForkLift.

Tags

Organize your documents and files with tags: add, edit, remove, search, or filter them within ForkLift. To add a tag to a item, right-click on it and choose from the colored dots, or choose Tags. option, then type the tag and press Enter. To edit tags, go to Finder > Preferences > Tags.

Share

Share files by right-clicking on them and choosing an option listed in Share context menu. Share menu options can be configured at System Preferences > Extensions > Share menu.

Services

Go to System Preferences > Keyboard > Shortcuts and choose Services from the list, then choose which ones display in the Services menu or right-click context menu. You can use Reveal in ForkLift context menu option on a selected file or folder in Finder.

Localizations

ForkLift speaks English, German, Hungarian, Russian, and Ukrainian. To change ForkLift's language, choose a preferred language at System Preferences > Language & Region, then relaunch ForkLift.

File Management

Open

Selected file can be opened by double clicking on it, choosing Open or Open with… from the right-click context menu, choosing Open from Go menu, and using shortcut Command-Down.

New File and New Folder

As a unique and uniquely practical feature, ForkLift lets you create a new, empty file in any folders, including connected remote volumes. Simply use File > New File, the toolbar icon, or keyboard shortcut.

Naturally, you can also create new folders anywhere, using the toolbar icon, the menu, or pressing Command-Shift-N. To create a new folder with selected items, choose New Folder with Selection from the right-click context menu, choose New Folder from File menu, or use shortcut.

Copy

To copy the item(s) selected in the active pane to the folder opened in the opposite pane you can use the following methods:

  • Drag and drop items while holding down the Option key
  • Choose Copy to from Commands menu
  • Use the Command-C keyboard command to copy the items to the clipboard, then switch to the second pane with Tab key and use Command-V to paste (on local volumes only)
  • Click the toolbar icon
  • Copy is also available in the item list context menu

To make a copy of an item within the same folder, select the item, then choose File > Duplicate or press Command–D.

Dragging files to a different disk or volume copies them. To move files to a different disk without copying them, hold down the Command key, then drag the files to the disk.

Conflict Handling

In case of conflict during a copy operation, ForkLift will ask whether you want to replace the file or folder, merge the folders, skip the file or folder, or resume a previous transfer, whichever action applies. You can set the pre-defined behavior for each case in the Transfer preferences.

Merge

If you have two folders with identical names at two different locations, you can merge them into a single folder. Hold down the Option key, then drag one folder to the location that contains a folder with the same name to copy. In the dialog that appears, click Merge.

Move

To move selected items simply use drag and drop. Drag and drop will also work across other applications, such as Finder. To move the items selected in the active pane to the folder opened in the opposite pane you can also use the toolbar icon or choose Move to from Commands menu.

To move files to a different disk or volume without copying them, hold down the Command key, then drag the files to the disk.

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With keyboard shortcuts, press Command-C to copy then Command-Option-V to move (on local volumes only).

Delete

To move a file to the Trash, drag the file to the Trash in the Dock. Or select one or more files and choose Commands > Move To Trash (Command-Backspace). To remove a file from the Trash, click the Trash to open it, then drag the file out of the Trash. To delete the files in the Trash within ForkLift, press Command-Shift-Backspace keyboard shortcut.

To permanently delete a file without putting it to the Trash, select one or more files and choose Commands > Delete (Command-Option-Backspace).

NOTE: Move to Trash is not available on remote volumes.

Go to Folder

In the Go menu of ForkLift, there is an option titled Go to Folder… with the keyboard shortcut Command-Shift-G. This will prompt you to enter a folder path and it allows Unix conventions (like using ~ to refer to home directory; for example ~/Documents refers to the Documents folder under your home folder). You can also type part of the folder name and hit Tab for autocompletion of the name. ForkLift lists the existing folders located in the curretly typed path, and also the previously opened folders. Select a folder using the up and down arrow keys from the list, then press Enter to open.

Quick Select

You can easily add or remove items from selection by using Command-S shortcut. Type a file or folder name, a tag, or a file extension, choose a command by pressing Arrow Up and Down keys in the Quick Select popover, then press Enter.

Aliases and Symlinks

ForkLift can use the aliases created with Finder, and vice versa. You can create aliases to any files or folders in the local file system. Double clicking an alias opens the target folder in ForkLift. Items dropped on an alias are copied to the target folder. ForkLift also can create and use symlinks. Both can be found in Commands menu.

Quick Look

Yes, you can use Quick Look with ForkLift, and even use it to view remotely stored files, whether browsing an FTP server, or an Amazon S3 account. Press the space bar to toggle Quick Look on/off, or click the toolbar icon. While the Quick Look view is up, you can still use the up and down arrow keys to browse through the items in the active pane.

Calculate Folder Size

You can see the size of any folder by selecting it and choosing Calculate Folder Size from File menu or pressing Command-Shift-S. You can also turn on Calculating Folder Sizes as a default action for all local folders in View > Show View Options (Command-J or right-click menu).

Archive Management

ForkLift lets you browse file archives as if they were read-only folders. You can copy files out from the archive, and you can Quick Look the files stored within the archive. Just right-click on an archive and choose Show Archive Contents from the context menu.

You can also create your own archives, but you should note that creating archives is only available locally. To create an archive, select the item(s), then choose Compress from the Commands menu, or right-click on the selection and choose Compress from the context menu.

To create an encrypted zip, tar, tar.gz, or tar.bz2, select the item(s), then choose Compress with Options. from the Commands menu while holding the Option key, or right-click on the selection and choose Compress with Options. from the context menu while holding the Option key.

You can also enable Treat archives as folders at General preferences. This feature works seamlessly through any remote connection. You can create your own archives, but you should note that creating archives is only available locally.

Sync Browsing

Sync browsing links the navigation of one pane to the other pane if the directory structures are equal. Open your local directory in one pane, say, ~/Documents/Projects/, then open the backup of the Projects folder in the opposite pane. Turn on Sync Browsing by clicking the toolbar icon. From this point on, navigation in one pane will be followed by the other pane, so you can compare folder contents without your carpal syndrome kicking back in.

Compare

With compare feature you can compare the content of two text-based files, images, or folders. To compare files select one file in the left pane and another file in the right pane and choose Commands > Compare from the menu or use its toolbar button. By default the Compare command is configured to use the built in File Merge of Xcode, so you must install Xcode. Forklift runs /usr/bin/opendiff and that needs to point to the correct location of Xcode. If Compare would not work, use the following Terminal command: sudo xcode-select -s /Applications/Xcode.app/Contents/Developer Set compare tool at ForkLift > Preferences > General. You can choose between Xcode's FileMerge, Kaleiodoscope, Beyond Compare, or Araxis Merge.

Source Control Management

ForkLift has Git support, so you can add, commit, push, and pull from the Commands menu, if you have git installed on your system. To show the status of recently changed individual files, enable SCM Status at View Options (Command-J).

Reveal in Finder

Choose Reveal in Finder option from the right-click context menu to reveal selected items in Finder.

Remote Connections

ForkLift is able to connect to servers with a multitude of protocols. You can connect to a remote server by choosing Go > Connect from the Menu or using the shortcut Command-K.

ForkLift's speed strongly depends on the maximum amount of simultaneous transfers enabled when copying many files and it is important to check how many concurrent connections the given server supports at the same time (the default setting in ForkLift is 5). You can read about simultaneous transfers in detail in the chapter Activities.

Mac
Supported protocols
  • FTP
  • FTP TLS
  • SFTP
  • WebDAV
  • WebDAV HTTPS
  • Amazon S3
  • Backblaze B2
  • Google Drive
  • Rackspace Cloud Files
  • SMB
  • AFP
  • NFS
  • VNC
Exemptions to normal workflow on remote volumes
  • Deleting files means deleting them immediately. Trash is not available for remote volumes.
  • You cannot create symlinks on remote volumes.
Connect to a Server

You need three basic information to connect to a remote server: server hostname, username, and password. Once connected to the server, you will be able to work with the data stored on the server in the same way you work with local data. You can use Quick Look, you can edit files, browse archives or use batch rename.

You can greatly enhance your workflow by storing frequently used connection as a favorite in the Favorite Manager and taking advantage of our amazing Local Path and Copy URL features, for faster access and better management of your files. Local Path is for opening the given path in the other pane when connecting to a remote server. To set up or modify a remote connection, open a new connection or add/edit an existing favorite.

Example to connect to an FTP server
  • Press Command-K keyboard shortcut.
  • Choose FTP protocol.
  • Enter server hostname: e.g.: ftp.binarynights.com or IP address (127.0.0.1). Note you need not include the ftp:// prefix.
  • The default port for FTP connection is port number 21, but if your server is set up differently, you should enter the port number
  • Enter your username. ForkLift will log in as anonymous user if left blank.
  • Enter your password. Leave blank for anonymous user login.
  • If most of your FTP work is done in a specific folder on the FTP account, this is where you have the option to set the initial path for the connection (e.g.: /www/html). On connection, ForkLift will open directly in this folder
  • Check Add to Favorites option if you want to save the FTP connection after you successfully connected.
  • Click Connect

On connection, a spinning progress indicator shows the connection is in progress. An alert is displayed if the connection fails for some reason. Once the connection is established, the volume is listed in the Sidebar under Connections. You can disconnect from the connection by clicking the small eject button next to the connection's name in the Sidebar, or selecting the connection in the Sidebar and clicking File > Disconnect.

FTP and FTP TLS

FTP stands for File Transfer Protocol and is the most common way of transferring files over the Internet. ForkLift supports FTP over TLS Explicit only.

SFTP

SFTP is FTP over SSH. It is more secure and reliable than standard FTP.

If you want to log in using GPG card instead of SSH private key, quit ForkLift and use the following Terminal command: defaults write com.binarynights.ForkLift-3 SSH_AUTH_SOCK /path/to/gpg-agent

You can also use your Smart Card USB device if it supports PKCS#11 standard. After installing OpenSC, quit ForkLift and use the following Terminal command: defaults write com.binarynights.ForkLift-3 SSH_AUTH_SOCK /Library/OpenSC/lib/opensc-pkcs11.so Then type your User Pin of the Smart Card in the Password field.

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Supported protocols
  • FTP
  • FTP TLS
  • SFTP
  • WebDAV
  • WebDAV HTTPS
  • Amazon S3
  • Backblaze B2
  • Google Drive
  • Rackspace Cloud Files
  • SMB
  • AFP
  • NFS
  • VNC
Exemptions to normal workflow on remote volumes
  • Deleting files means deleting them immediately. Trash is not available for remote volumes.
  • You cannot create symlinks on remote volumes.
Connect to a Server

You need three basic information to connect to a remote server: server hostname, username, and password. Once connected to the server, you will be able to work with the data stored on the server in the same way you work with local data. You can use Quick Look, you can edit files, browse archives or use batch rename.

You can greatly enhance your workflow by storing frequently used connection as a favorite in the Favorite Manager and taking advantage of our amazing Local Path and Copy URL features, for faster access and better management of your files. Local Path is for opening the given path in the other pane when connecting to a remote server. To set up or modify a remote connection, open a new connection or add/edit an existing favorite.

Example to connect to an FTP server
  • Press Command-K keyboard shortcut.
  • Choose FTP protocol.
  • Enter server hostname: e.g.: ftp.binarynights.com or IP address (127.0.0.1). Note you need not include the ftp:// prefix.
  • The default port for FTP connection is port number 21, but if your server is set up differently, you should enter the port number
  • Enter your username. ForkLift will log in as anonymous user if left blank.
  • Enter your password. Leave blank for anonymous user login.
  • If most of your FTP work is done in a specific folder on the FTP account, this is where you have the option to set the initial path for the connection (e.g.: /www/html). On connection, ForkLift will open directly in this folder
  • Check Add to Favorites option if you want to save the FTP connection after you successfully connected.
  • Click Connect

On connection, a spinning progress indicator shows the connection is in progress. An alert is displayed if the connection fails for some reason. Once the connection is established, the volume is listed in the Sidebar under Connections. You can disconnect from the connection by clicking the small eject button next to the connection's name in the Sidebar, or selecting the connection in the Sidebar and clicking File > Disconnect.

FTP and FTP TLS

FTP stands for File Transfer Protocol and is the most common way of transferring files over the Internet. ForkLift supports FTP over TLS Explicit only.

SFTP

SFTP is FTP over SSH. It is more secure and reliable than standard FTP.

If you want to log in using GPG card instead of SSH private key, quit ForkLift and use the following Terminal command: defaults write com.binarynights.ForkLift-3 SSH_AUTH_SOCK /path/to/gpg-agent

You can also use your Smart Card USB device if it supports PKCS#11 standard. After installing OpenSC, quit ForkLift and use the following Terminal command: defaults write com.binarynights.ForkLift-3 SSH_AUTH_SOCK /Library/OpenSC/lib/opensc-pkcs11.so Then type your User Pin of the Smart Card in the Password field.

WebDAV and WebDAV HTTPS

WebDAV is an extension of the HTTP protocol that allows to edit and manage files on a remote web server.

Amazon S3

Amazon S3 (Simple Storage Service) is an online storage web service offered by Amazon Web Services. Supported regions:

  • US East (N. Virginia)
  • US East (Ohio)
  • US West (N. California)
  • US West (Oregon)
  • EU (Ireland)
  • EU (London)
  • EU (Frankfurt)
  • EU (Paris)
  • Asia Pacific (Singapore)
  • Asia Pacific (Tokyo)
  • Asia Pacific (Seoul)
  • Asia Pacific (Sydney)
  • Asia Pacific (Mumbai)
  • China (Bejing)
  • China (Ningxia)
  • Canada (Central)
  • South America (São Paulo)
  • AWS GovCloud (US)

Use your Access Key and Secret Key to connect.

NOTE: Connecting to a specific bucket with a bucket level only permission is not possible at the moment.

Backblaze B2

Backblaze B2 is an object storage service similar to Amazon's S3. Use your Account ID and Application Key to connect.

NOTE: Renaming and moving items within datasource are not supported by Backblaze.

Google Drive

Google Drive is a file storage service developed by Google. After clicking on Connect, log in to your Google account in the browser window and give ForkLift access to Google Drive, then go back to the ForkLift window.

Rackspace Cloud Files

Cloud Files is a cloud hosting service that provides 'unlimited online storage and CDN' for media (examples given include backups, video files, user content) on a utility computing basis offered by Rackspace. Use your username and API Key to connect.

AFP

AFP is Apple's Apple Filing Protocol to connect multiple Macs in a network. To connect to an AFP share click choose Go > Connect from the menu or use the shortcut Command-K, choose AFP protocol, enter the URL of the share and click on Connect. You can add a folder from the share to your favorites by simple drag and drop to a favorite group in the sidebar.

SMB

SMB stands for Server Message Block, also known as Common Internet File System, CIFS. Most usage of SMB involves computers running Microsoft Windows, where it was known as 'Microsoft Windows Network' before the subsequent introduction of Active Directory. To connect to an SMB share click choose Go > Connect from the menu or use the shortcut Command-K, choose SMB protocol, enter the URL of the share and click on Connect. You can add a folder from the share to your favorites by simple drag and drop to a favorite group in the sidebar.

NFS

Network File System (NFS) is a distributed file system protocol allowing a user on a client computer to access files over a computer network much like local storage is accessed. To connect to an NFS share click choose Go > Connect from the menu or use the shortcut Command-K, choose NFS protocol, enter the URL of the share and click on Connect.

VNC

Virtual Network Computing (VNC) is a graphical desktop sharing system to remotely control another computer. It transmits the keyboard and mouse events from one computer to another, relaying the graphical screen updates back in the other direction, over a network.

Remote Editing

ForkLift allows you to edit files stored on remote servers in a single click action. Instead of downloading the file, editing it and then uploading it again, you can directly edit a remote file through the Open or Open with. command, found in the right-click context menu of the item, or if you double click on it. This will cause the remote file to be copied to the local cache and opened for editing. The Open and Open with. function keep monitoring the local file for changes and uploads the modified version back to the remote location on file save.

Copy URL

Copy URL generates a direct URL that points to a file stored on your server. This is handy when you want to quickly share a file with others. Just upload the file, right-click on it and choose Copy URL from the context menu to create a URL on the clipboard pointing to your file. Holding the Option key gives you the opportunity to open the URL directly in a browser. The Copy URL feature is available on FTP, SFTP, WebDAV, Amazon S3 and Rackspace Cloud Files connections.

Copy URL requires you to set up the Base URL and the Path parameters of the connection correctly for each connection you want to use this command on. You can set this up on the Connect panel when you create or edit a connection. (Read how to connect to a remote server and how to edit an existing favorite.)

If you don't set up these parameters, ForkLift will copy the full path of the file.

  • The Base URL field tells ForkLift the beginning of the URL you want to use.
  • The Path field tells ForkLift which subfolder you want to open after logging in to your server. This defined path will be ignored in the copied URL. If you define a path, then copying the URL starting with the Base URL will only work inside that defined path. If you navigate outside of the path, then the Copy URL command will copy the full path of the file.
Examples of Copy URL Setups

Let's say you have a file called index.html on your SFTP server.
The full path of this file is: sftp://example.com/Users/Shared/Website/index.html

1. If you set up the Base URL and the Path

1.1. Inside the defined Path: Copied URL = Base URL + (Path of the file - Path defined in ForkLift)

Full Path = sftp://example.com/Users/Shared/Website/index.html
Path of the file = /Users/Shared/Website/index.html
Path (defined in ForkLift) = /Users/Shared/Website/
Base URL = https://example.com
Copied URL = https://example.com/index.html

https://example.com/index.html = https://example.com + (/Users/Shared/Website/index.html - /Users/Shared/Website)

1.2 Outside of the defined Path: Copied URL = Full Path

If you navigate outside of the defined Path, for example to the /Users/Shared/Pictures folder on your server and copy the URL of a file called flowers.jpg which is sitting in this folder, then the copied path will be the full path of this file: sftp://example.com/Users/Shared/Pictures/flowers.jpg

Full Path = sftp://example.com/Users/Shared/Pictures/flowers.jpg
Path of the file = /Users/Shared/Pictures/flowers.jpg
Path (defined in ForkLift) = /Users/Shared/Website/
Base URL = https://example.com
Copied URL = sftp://example.com/Users/Shared/Pictures/flowers.jpg

BUT

Full Path = sftp://example.com/Users/Shared/Pictures/flowers.jpg
Path of the file = /Users/Shared/Pictures/flowers.jpg
Path (defined in ForkLift) = /Users/Shared/Pictures/
Base URL = https://example.com
Copied URL = https://example.com/flowers.jpg
Reaktron mac os.

OR

Full Path = sftp://example.com/Users/Shared/Pictures/flowers.jpg
Path of the file = /Users/Shared/Pictures/flowers.jpg
Path (defined in ForkLift) = /Users/Shared/Pictures/
Base URL = https://example.com/Pictures/
Copied URL = https://example.com/Pictures/flowers.jpg

If you often copy URLs from different folders on the same server, it can be useful to set up more favorites with different paths. That way you will always be able to copy the URLs in the right formats.

2. If you set up the Base URL and don't set up the Path, then the Copied URL = Base URL + Path of the file

Full Path = sftp://example.com/Users/Shared/Website/index.html
Path of the file = /Users/Shared/Website/index.html
Base URL = https://example.com
Path (defined in ForkLift) = None
Copied URL = https://example.com/Users/Shared/Website/index.html

3. If you set up the Path but don't set up the Base URL, then the Copied URL = Full Path

4. If you don't set up the Base URL nor the Path, then the Copied URL = Full Path

FXP Copy

Those of you who work a lot with moving data from one FTP server to the other, will just love this feature, which is pioneering on the OS X platform with ForkLift. By default, when you copying data from one server to another, the files are usually copied to your own machine first, and are then uploaded to the target. FXP Copy makes it possible to transfer the data directly between the two servers.

To FXP Copy

  • Open the two FTP folders in the two panels of Forklift
  • Select the files or folders you want to copy in one panel
  • Choose FXP Copy from Commands menu

The copy operation is added to Activities, but since the transfer is executed directly between the two ftp servers, the progress indicator you normally see will not show any useful information.

NOTE: Some FTP servers may restrict the use of this feature.

Transcript

ForkLift logs accesses and file transfers made on FTP servers to ~/Library/Logs/ForkLift/ directory.

Tools

Sync

You can sync between folders, drives, and remote connections. In dual pane mode, open the target folder where you are going to sync to, and open the source folder in the other pane and leave the pane active, then press Command-Option-Shift-S, choose Sync to from Commands menu, or click Sync toolbar icon.

In this window you can configure these following options:

  • Sync direction: sync items from left to right, from right to left, or both ways
  • Add item: copy all files, which don't exist at the target location
  • Update items: copy files which have different size or modification date (depends on the setting)
  • Delete orphaned items: delete all files from the target folder which don't exist at the source location
  • Sync subfolders: sync folders also not just files
  • Sync hidden items: sync files you can't see
  • Filter items: you can add and define exceptions
  • Time offset correction

You can exclude items from sync by clicking on the arrows in the middle.

Wizard and the princess mac os. At the bottom of the sync preview you can see how many items will be added, updated, and deleted.

If you save this setup as a Synclet, you can perform synchronisation by clicking on it in the sidebar or in ForkLift Mini from the menu bar. To edit a Synclet, right-click on it in the sidebar and choose Edit option. Click Save to finish editing.

Multi Rename

Use the Multi Rename tool when you need to rename a large number of files at once, like saving pictures from your phone camera to your desktop. Select two or more files and press Enter.

The Multi Rename tool lets you:

  • replace a string of characters in filenames,
  • replace a string of characters based on Regular Expressions in filenames,
  • add text to a specified position in filenames,
  • add modification date to a specified position in filenames,
  • add creation date to a specified position in filenames,
  • add a numbered sequence at a specified position in filenames,
  • and change upper/lower case of characters in filenames.

You can add a Multi Rename preset to Favorites, so if you select the files you want to rename and click on the saved preset in the sidebar, the Multi Rename sheet will show up with the previously configured setup and you only have to click Rename to finish. If you drag and drop files to the saved preset, they will be renamed immediately. To edit a Multi Rename preset, right click on it in the sidebar and choose Edit from the context menu.

App Deleter

Remove apps with all their preferences files and all they usually leave behind. App Deleter helps you locate and get rid of all the files and folders that are used by an application that you don't use anymore.

To remove an app:

  • Select the application you wish to remove in one of the panes
  • Press Command-Backspace or drag the application to the trash
  • Checked items get moved to the Trash with the application itself, so uncheck the items on the list you wish to keep
  • Click Move to Trash to remove the items

ForkLift Mini

ForkLift Mini sits on your menu bar and lets you mount a saved remote connection as disk, upload files to a remote volume from Finder by drag and drop, or run a saved synclet no matter ForkLift is running or not. Make sure you have enabled it at ForkLift > Preferences > General.

Disklet

Disklet allows you mount any of your saved remote connections, making it appear to your Mac as local drives. Once mounted you can directly access your files on the server from any app. To mount a remote connection, open ForkLift Mini in the menu bar, choose the remote connection then choose Mount as Disk option.

Disklet relies on the free, third party FUSE for macOS framework. You can download it from here.

Droplet

You can open a saved remote connection as a Droplet and upload files from Finder by drag and drop. Open ForkLift Mini in the menu bar, choose the remote connection then choose Open as Droplet option, then drag files into the bordered area to upload. Upload progress will be shown underneath that area. Target location will be the path you specified at the remote connection's Path field. To edit the target location, right-click on the favorite in the sidebar in ForkLift, choose Edit option from the context menu, type the desired path in the Path field, then click Save. To close Droplet, click on ForkLift Mini's menu bar icon.

Synclet

To run a Synclet without launching ForkLift, open ForkLift Mini in the menu bar, choose a previously saved sync settings, then click on Sync option. You will see the progress information in the popover. You can close this popover by clicking on the forklift icon in the menu bar. Once it is finished, you will receive a notification showing how many items have been added, updated, and deleted.

Preferences

General

Starting Directory

This setting defines the default directory that is displayed when you open a new ForkLift window.

Restore windows and tabs on startup

When this option is enabled, ForkLift remembers the tabs that where open when you quit the app. The tabs will be restored on the next launch.

Ask for confirmation for drag operations

Check this option to avoid accidental drag operations like copy or move.

Detect application when deleting

Enable this option to use the App Deleter function.

Treat archives as folders

If this option is enabled, archives will be treated as folders, that means they will not be extracted, but you can browse them just like a folder and open even single items without extracting the entire archive. When this option is disabled archives are extracted when double-clicking or executing them.

Handle archives with ForkLift

Disable this option to use the default archive utility instead.

Dark Mode

Enable this option if you want to join the dark side of ForkLift. If you want to see vivid colors for selection, quit ForkLift and paste the following command in Terminal and hit Enter: defaults write com.binarynights.ForkLift-3 VividSelectionColors true If you are using ForkLift from Setapp, paste this command instead: defaults write com.binarynights.forklift-setapp VividSelectionColors true

On macOS Mojave, you can enable dark mode at System Preferences > General.

ForkLift Mini

Enable ForkLift Mini in order to use Disklet, Droplet, and Synclet from the menu bar.

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Sync Favorites

You can sync all your favorites between your Macs through Dropbox. Click on the dropdown button and choose Dropbox, then you'll be redirected to Dropbox's website to continue the authorization process and connect ForkLift to your Dropbox. Click Allow on that website and go back to ForkLift.

Choose a Master Password to encrypt and decrypt your passwords synced over the network. If you forget the Master Password, your saved passwords won't be synchronized to the other Mac where you set up sync.

Terminal Application

You can set Terminal, iTerm, Hyper, or Kitty as default terminal application. If you used to iTerm or Hyper, you can continue using it with 'Open in Terminal' function, just choose it from the dropdown.

Compare Tool

You can choose between Xcode's FileMerge, Kaleiodoscope, Beyond Compare, or Araxis Merge. If you already own Kaleiodoscope and want to use that instead of File Merge and want to compare two images, choose Kaleiodoscope from the dropdown. Make sure you have installed ksdiff command line tool. If you haven't, open Kaleiodoscope, choose Integration from Kaleiodoscope menu, and click on the install button at Kaleiodoscope Command Line Tool section.

Updates

You can alter automatic update settings or check for ForkLift updates instantly. Updates are signed, and they are downloaded through a secure HTTPS protocol.

Shortcuts

There are two default shortcut sets you can choose from:

  • Finder style key binding set for those users who are used to the shortcuts of Apple's Finder
  • Commander style key binding set for those who have the Commander shortcuts hard-wired in their carpal muscles

To edit a shortcut, double click on it or select it and hit Enter, then press the key combination you would like to assign. If you would totally mess up the shortcuts by accident, you can always restore the default shortcuts by choosing Restore Defaults from the dropdown.

Enable keyboard selection to select items by pressing the Spacebar in List View.

Basic keyboard shortcuts
ActionFinder styleCommander style
Open SelectionCommand-DownEnter
Enclosing FolderCommand-UpBackspace
Quick LookSpaceF3
Copy toF5F5
Move toF6F6
RenameEnterShift-F6
EditCommand-EF4
Move to TrashCommand-BackspaceF8
New FolderCommand-Shift-NF7

Transfers

Conflict Handling

Select the behavior you would like to define for replace, resume, and merge policies.

Bandwidth Limit

If you have a slow internet connection and doesn't want ForkLift to occupy the whole bandwidth, you can set a desired upload and download speed limit.

Error Handling

If items in the queue fail to be transferred, ForkLift can automatically retry to transfer them. You can turn this setting off, or change the number of retries.

Max. simultaneous transfers

ForkLift connects to the server through several connections, and uses them all in concert to speed up transfers. Since this represents an increased load on the target server, controls are provided to adjust the number of connections depending on your server. Using concurrent transfers is obviously more taxing on the server, and may result in dropped transfers or recurring timeouts on slow servers. In this case, decrease the concurrency value from default 5. Enable Simultaneous deletion option to delete items simultaneously and much faster on remote servers.

Tools

Extend ForkLift's capabilities to the max by invoking command line tools. To create a new tool, click on the plus button at the bottom of the list, name your tool, then type the command and add arguments by clicking on the plus button at the bottom of the textfield:

  • $SOURCE_PATH - Path of the displayed directory in the active pane
  • $TARGET_PATH - Path of the displayed directory in the inactive pane
  • $SOURCE_SELECTION_PATHS - Full paths of the selected items in the active pane
  • $TARGET_SELECTION_PATHS - Full paths of the selected items in the inactive pane
  • $SOURCE_SELECTION_NAMES - Names of the selected items in the active pane
  • $TARGET_SELECTION_NAMES - Names of the selected items in the inactive pane

Click Save to finish. To use a tool, choose it from Commands menu, or assign a keyboard shortcut to it at Shortcuts.

Editing

You can define your favorite editors for different kinds of files. To add an application for editing files, click on the plus button at the bottom left of the window and simply browse the application you would like to add. After you added an application you can set it as the default editor by putting a checkmark next to it in the Default column. To assign specific file types to an application double click the Extensions column of the application or select it and hit enter, then type the desired extensions separated with commas. To edit a selected file, just press Command-E shortcut.

Default File Viewer

You can set ForkLift 3 as default file viewer, and almost every app (except Desktop) will point to ForkLift when you choose Reveal in Finder, Show in Finder, or Open in Finder options. Paste the following command into Terminal and hit Enter: defaults write -g NSFileViewer -string com.binarynights.ForkLift-3;
defaults write com.apple.LaunchServices/com.apple.launchservices.secure LSHandlers -array-add '{LSHandlerContentType='public.folder';LSHandlerRoleAll='com.binarynights.ForkLift-3';}'
If you are using ForkLift from Setapp, paste this command instead: defaults write -g NSFileViewer -string com.binarynights.forklift-setapp;
defaults write com.apple.LaunchServices/com.apple.launchservices.secure LSHandlers -array-add '{LSHandlerContentType='public.folder';LSHandlerRoleAll='com.binarynights.forklift-setapp';}'
Then restart your Mac. The second command is required in order to open folders in ForkLift by pressing Enter in Alfred.
To change it back to Finder, use the following command then restart your Mac: defaults delete -g NSFileViewer
defaults write com.apple.LaunchServices/com.apple.launchservices.secure LSHandlers -array-add '{LSHandlerContentType='public.folder';LSHandlerRoleAll='com.apple.finder';}'
If you set ForkLift as the default file viewer and you remove it from your system, Finder will automatically become the default one.

The resource fork is a fork or section of a file on Apple's classic Mac OSoperating system, which was also carried over to the modern macOS for compatibility, used to store structured data along with the unstructured data stored within the data fork.

A resource fork stores information in a specific form, containing details such as icon bitmaps, the shapes of windows, definitions of menus and their contents, and application code (machine code). For example, a word processing file might store its text in the data fork, while storing any embedded images in the same file's resource fork. The resource fork is used mostly by executables, but every file is able to have a resource fork.

The Macintosh file system[edit]

Originally conceived and implemented by programmer Bruce Horn, the resource fork was used for three purposes with Macintosh file system:

  • It was used to store all graphical data on disk until it was needed, then retrieved, drawn on the screen, and thrown away. This software variant of virtual memory helped Apple to reduce memory requirements from 1 MB in the Apple Lisa to 128 KB in Macintosh.
  • Because all the pictures and text were stored separately in a resource fork, it could be used to allow a non-programmer to translate an application for a foreign market, a process called internationalization and localization.
  • It could be used to distribute nearly all of the components of an application in a single file, reducing clutter and simplifying application installation and removal.

The resource fork is implemented in all of the file systems used for system drives on the Macintosh (MFS, HFS and HFS Plus). The presence of a resource fork makes it easy to store a variety of additional information, such as allowing the system to display the correct icon for a file and open it without the need for a file extension in the file name. While access to the data fork works like file access on any other operating system – pick a file, pick a byte offset, read some data – access to the resource fork works more like extracting structured records from a database. (Microsoft Windows also has a concept of 'resources', but these are completely unrelated to resources in Mac OS.)

The resource fork is sometimes used to store the metadata of a file, although it can also be used for storing the actual data, as was the case with font files in the classic Mac operating systems. Note that the Macintosh file systems also have a separate area for metadata distinct from either the data or resource fork. Being part of the catalogue entry for the file, it is much faster to access this. However, the amount of data stored here is minimal, being just the creation and modification timestamps, the file type and creator codes, fork lengths, and the file name. Some files have only a resource fork. Classic 68k applications are one example, where even the executable code is contained in resources of type 'CODE'. Later PowerPC binaries store the executable code in the data fork.

As resource forks are supported only on the file systems HFS, HFS Plus, and APFS, they cannot be used on operating systems which use other file systems. At present, HFS is supported only by the Macintosh operating system, which means that only machines running Mac OS can use resource forks. Even in a Mac OS system, resource forks cannot be used if the Unix File System has been installed. In the HFS Plus file system, which is currently the system most commonly used under Mac OS, settings can be made to allow other forks in addition to the data and resource forks, to create a 'multi-fork' application. However, as forks can make it difficult to exchange files with other operating systems, this feature is not in common use. Even in macOS, resource forks are seldom used anymore.

Currently, macOS supports resource forks on Windows SMB shares by creating a hidden file with the characters '._' added at the beginning of the file name, in the same directory as the data fork file.

Resource identifiers[edit]

Each resource has an OSType identifier (a four byte value) and an ID (a signed 16-bit word), as well as an optional name. There are standardized resource types for dialog boxes ('DITL), images ('PICT'), sounds ('snd ') – and even for executable binaries ('CODE') which, until the advent of the PowerPCprocessor, were without exception stored in the resource fork. Subroutines for rendering windows are stored in their own type of resources ('WDEF'), subroutines for rendering menus in theirs ('MDEF'), and if there is a type of data you think does not fit any of the standardized categories, you can just as well use a type of your own (e.g. 'John') – actually any four characters or 32-bit value can serve as a resource type. This arrangement enabled users to easily customize not only individual applications but also the operating system itself, using tools such as ResEdit to modify the resources of an application file or any of the system files.

Within an application or other code, resources can be loaded simply using a combination of their type, ID or name, without regard to how and where they are stored in the resource fork. The client is returned a Handle to the loaded resource which can then be accessed like any other heap-based data. The OS component that facilitates this is the Resource Manager. In addition to abstracting the details of the data storage from the data itself, the Resource Manager also arranges sets of open resource forks into a stack, with the most recently opened file on top. When trying to load a resource, it will look in the top of the stack first, (perhaps the current document's resource fork), then the next one down (the application's resource fork), then the next one (system resource forks). This arrangement is very powerful – it permits local resources to override more global ones lower down – so an application can provide its own icons or fonts in place of the standard system ones, for example. It also allows an application to load resources from the system using the same API as any other resource, without regard to where or how that resource is stored – to the application, all resources are equally available and easy to use. The system reserves resource IDs in a certain range to help avoid resource conflicts arising from this. Resource Manager APIs allow the programmer to manipulate the stack and modify the search behaviour.

Editing resource forks[edit]

As the resource fork can be edited with a resource editor such as ResEdit, it can be used to localize and customize software. In addition, most resource editors allow visual editing of data. In macOS, it is possible to use resources when developing an application. However, if the application may need to be used in UFS, it is also possible to configure it so that the entire resource fork is moved to the data fork, using the Raw Resource File setting. The integrated development environments distributed for free by Apple Inc., which include MPW and Apple Developer's Tools, include a compiler called Rez. This uses a dedicated language, also called Rez, which can be used to create a resource fork by compiling source code. A decompiler, DeRez, which can be used to change a resource fork back into Rez code is also included.

In the structure of the resource fork, there is a piece of data called a 'resource map' which stores the positions of resource data items. This can be used to allow random access to resource data based on the defined IDs and names. The resource fork can be thought of as consisting of essentially two objects, the resource map and the resource data itself, but in fact each data type is a hierarchical structure which stores multiple items of data. The format in which the information in the resource data is stored is defined based on the types of information, which are known as 'resource types.' Resource data often makes references to other types of data.

In macOS, forks are named file/.namedfork/forkname, e.g., the resource fork of the file IMG_0593.jpg is IMG_0593.jpg/.namedfork/rsrc. The ls command supports a -l@ option which lists a file's forks.

How a resource fork is accessed[edit]

Resource forks appear as the extended attribute com.apple.ResourceFork.[1]

Previously resource forks were accessed via the 'Resource Manager' API. This API is now deprecated.[2]

Under the deprecated API:

  1. When a resource fork is accessed, data including the start position and length of the resource data and resource map is read in from the header.
  2. If a resource type to read in has been specified, a check is performed to make sure that type is present in the resource list, and the number of items of data containing that type and their offsets in the resource reference list from the start position of the resource map is found.
  3. The resource ID, the offset of the resource name, the resource properties, and the offset of the data from the start position of the resource data is found.
  4. If resource data with the specified ID or name is present in the resource data, the offset obtained above is accessed, the data length is found, and all the data stored there is read in, and returned as the return value.

File Manager APIs such as PBOpenRF() also allowed access to the raw resource fork; however, they should be used only for applications such as copying a file – Apple strongly warns against using the resource fork as a 'second data fork.'

From the POSIX interface, the resource fork could be accessed as filename/.namedfork/rsrc or as filename/rsrc; the shorter form was deprecated in Mac OS X v10.4 and removed completely in Mac OS X v10.7.[3]

Data types in a resource fork[edit]

The smallest elements making up a resource fork are called data types. There are several data types. After a resource fork is accessed, its contents can be found by reading it in as appropriate for the data types defined in advance. Placing definitions inside the program stating how data is to be treated makes it possible to store resources called TMPL resources as well. Using this method increases the visibility of the data when viewed with a program such as ResEdit, making later editing simpler. As the Macintosh platform originated with Motorola-based processors (68k and PPC), the data is serialized to disk in big-endian format.

The following is a list of the major data types, in alphabetical order.

Data typeactual nameDescription
BBITbinary bitRepresents a single boolean bit (true or false). Normally the number of BBITs must be a multiple of 8.
BOOLbooleanRepresents a boolean value. It consists of 2 bytes; 256 is true, and 0 is false.
CHARcharacterRepresents a one-byte character.
CSTRC stringRepresents a string of the form used in the C programming language: a null-terminated string of bytes.
DLNGdecimal long word integerA decimal long word (4 byte integer). Represents values between approximately − 2.1 billion and 2.1 billion.
HEXDhex dumpIndicates that the data from this position to the end is hexadecimal. This is used to represent code resources or compressed data.
HLNGlong word hexadecimalThis data is treated as a 4 byte hexadecimal value. It is used, among other things, to represent integers greater than 2.1 billion, such as unsigned long values in C.
PSTRPascal stringRepresents a Pascal string, with the first byte giving the length of the string.
TNAMtype nameA string representing a value such as a creator code, which is always 4 bytes long.
RECTrectangleRepresents the coordinates of the corners of a rectangle (top, left, bottom, right). Always 8 bytes long.

Major resource types[edit]

The type codes below, like the above datatypes, are used as type identifiers for more than resource forks themselves: they are used to identify file themselves, to describe data in the clipboard, and much more.

Note that types must be 4 bytes long, so types like snd and STR actually have a space (0x20) at the end.

Name of resource typeactual nameDescription
alisaliasStores an alias to another file, in a resource fork of a file whose 'alias' attribute bit is set
ALRTalertDefines the shape of an application alert box
APPLapplicationStores application information
BNDLbundleDefines data such as a file type icon used in an application
cicncolor iconDefines a color icon used in data
clutcolor look-up tableDefines a color palette used in data
CNTLcontrolDefines the details of a component positioned in a window
CODEcode resourceStores the machine code for the program
CURScursorDefines the shape of a monochrome cursor (8 × 8 bit square)
DITLdialog item listDefines a component of a window
DLOGdialogDefines the shape of a dialog box for an application
FREFfile referenceDefines a file type handled by an application
hfdricon balloon helpDefines the contents and shape of the balloon help displayed when the cursor hovers over the file in the Finder
icl88-bit icon listDefines an icon displayed in the Finder
icns32-bit icon listDefines an icon displayed in the Finder
ICONiconDefines a monochrome item used in data
kindfile descriptionDefines a description of a file type
MBARmenu barDefines a menu and menu bar for an application
MDEFmenu definitionDefines a menu for an application. Can also be used to define menus with complex shapes such as color palettes.
MENUmenuDefines the menu items in an application
MooVmovieStores a QuickTime movie
openopenDefines a file type which the application can open
PICTpictureStores a PICT image contained in the file
PREFpreferenceStores the environment settings for an application
sndsoundStores a sound used in the file
STRstringStores a string or hexadecimal data used in the file
STR#string listStores multiple strings used in the file
stylstyleDefines style information, such as the font, color and size of text
TEXTtextStores text
TMPLtemplateDefines the format for the resource data
versversionDefines the version or region of use of the file
WDEFwindow definitionDefines a window for the application. Windows of an unspecified shape can also be defined.
WINDwindowDefines the shape of an application window

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Major resource editors[edit]

ResEdit
Distributed free of charge by Apple. Can be used for visual editing of resource data. If the structure of data is known, it can display a range of different types of data in a visual format. Does not run on modern macOS.
Resorcerer
Expensive, but popular, as it can be used for visual editing of many more types of data than ResEdit.
HexEdit
A binary editor, which in fact is normally used more for editing the data fork rather than the resource fork.
ResKnife
Open-source editor for Mac OS X; no longer maintained.
Rezycle
A macOS tool that extracts resources from a resource fork into separate binary files while converting many types into formats suitable for modern development.
resource_dasm
An open-source resource extractor for macOS, also capable of converting many resources into modern formats.

Compatibility problems[edit]

The complexity of programming with resource forks has led to compatibility problems when accessing other file systems via file sharing protocols such as AFP, SMB, NFS and FTP, when storing to non-HFS volumes, or when transmitting files to other systems in other ways (such as via email). The AFP protocol natively supports Resource Forks, and so resource forks are typically transmitted to these volumes as-is, and stored by the server transparently to clients. The SMB protocol supports a file metadata system similar to Macintosh forks known as Alternate Data Streams (ADSes hereafter). macOS did not support storing resource forks in ADSes on SMB volumes by default until Mac OS X v10.6. In previous versions of the OS, including upgraded versions of 10.6, this feature can be enabled with a param change or by creating a special file.[4]

Networked file sharing protocols such as NFSv3 and FTP do not have a concept of file metadata, and so there is no way to natively store resource forks. This is also true when writing to certain types of local file systems, including UFS, and on SMB volumes where Alternate Data Stream support is not enabled. In those cases, macOS stores metadata and resource forks using a technique called AppleDouble, in which the data fork is written as one file, and the resource fork and metadata are written as an entirely separate file preceded by a '._' naming convention. For example: ExampleFile.psd would contain the data fork, and ._ExampleFile.psd would contain the resource fork and metadata.

Compatibility problems can arise because macOS will handle storage of resource forks differently, depending on macOS version, settings, and file system type. For example, on an SMB network with a mixture of 10.5 and 10.6 clients. A freshly installed 10.6 client will look for and store resource forks on an SMB volume in ADSes, but the 10.5 client will (by default) ignore ADSes and use AppleDouble format to handle forks. If a fileserver supports both AFP and NFS, then clients using NFS will store files in AppleDouble format, whereas AFP users will stored the resource fork natively. In those cases, compatibility can sometimes be maintained by forcing clients to use, or not use, AppleDouble format.

Many fileservers providing AFP support do not natively support resource forks on their local file systems. In those cases the forks may be stored in special ways, such as specially named files, special directories, or even Alternate Data Streams.

Another challenge is preserving resource forks when transmitting files using non-resource fork-aware applications or with certain transfer methods, including email and FTP. A number of file formats, such as MacBinary and BinHex, have been created to handle this. Command-line system tools SplitForks and FixupResourceForks allow manual flattening and merging of resource forks. In addition, a file server seeking to present file systems to Macintosh clients must accommodate the resource fork as well as the data fork of files; UNIX servers providing AFP support usually implement this with hidden directories.

Older applications written with the Carbon API have a potential issue when being ported to the current Intel Macs. While the Resource Manager and operating system know how to deserialize data correctly for common resources like 'snd ' or 'moov', resources created using TMPL resources have to be byte swapped manually to ensure file interoperability between PPC and Intel-based versions of an application. (While the resource map and other implementation details are big-endian, the Resource Manager by itself doesn't have any knowledge of the contents of a generic resource, and so cannot perform the byte swapping automatically.)

Until the advent of Mac OS X v10.4, the standard UNIX command-line utilities in macOS (such as cp and mv) did not respect resource forks. To copy files with resource forks, one had to use ditto or CpMac and MvMac.

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Other operating systems[edit]

The concept of a resource manager for graphics objects, to save memory, originated in the OOZE package on the Xerox Alto in Smalltalk-76.[5] The concept is now largely universal in all modern operating systems. However, the concept of the resource fork remains peculiar to the Macintosh. Most operating systems used a binary file containing resources, which is then 'tacked onto' the end of an existing program file. This solution is used on Microsoft Windows for instance, and similar solutions are used with the X Window System, although the resources are often left as a separate file.

The Windows NTNTFS can support forks (and so can be a file server for Mac files), the native feature providing that support is called an alternate data stream. Windows operating system features (such as the standard Summary tab in the Properties page for non-Office files) and Windows applications are use them and Microsoft was developing a next-generation file system that has this sort of feature as basis.

Early versions of the BeOS implemented a database within the file system, which could be used in a manner analogous to a resource fork. Performance issues led to a change in later releases to a system of complex file system attributes. Under this system resources were handled in a fashion somewhat more analogous to the Mac.

AmigaOS does not use forked files. Its executable files are internally divided into a modular structure of large pieces (hunk) capable of storing code, data, and additional information. Similarly, data and project files have a chunk structure codified in the IFF standard. Other file types are stored similarly to other operating systems. Though not strictly a resource fork, AmigaOS stores meta data in files known as .info files. .info files can be identified by the .info extension; for example, if you save a project to a disk, two files will be saved, MyProject and MyProject.info. MyProject would be the actual project data and MyProject.info would contain the project icon, information regarding which program is needed to open the project (since there is no application binding in AmigaOS), special project options and any user comments. .info files are invisible on the Amiga's desktop (Workbench). The icon on the desktop, taken from the .info itself, is the interface metaphor through which the user interacts both with the project itself and its associated .info file. A dialog box accessible by right-clicking the icon allows the user to see and modify the metadata present in the .info file. .info files can be seen as individual files in the command-line interface or a File manager. Modern AmigaOS clones (AROS, MorphOS and AOS4) inherit the structure (complete with metadata) of the .info files of older AmigaOS versions, and can also accept standard PNG graphic files as icon bitmaps in their .info files.

NeXT operating systems NeXTSTEP and OPENSTEP, their successor, macOS, and other systems like RISC OS implemented another solution. Under these systems the resources are left in an original format, for instance, pictures are included as complete TIFF files instead of being encoded into some sort of container. These resources are then placed in a directory along with the executable code and 'raw data'. The directory (called a 'bundle' or 'application directory') is then presented to the user as the application itself. This solution provides all of the same functionality as the resource fork, but allows the resources to be easily manipulated by any application – a 'resource editor' (like ResEdit) is not needed. From the command-line interface, the bundle appears to be a normal directory. This approach was not an option on the classic Mac OS, since the file system (MFS) did not support separate catalog directories. When catalog file support was included in Mac OS, with the HFS filesystem, the resource fork was retained. macOS does retain the classic Resource Manager API as part of its Carbon libraries for backward compatibility. However, the resources themselves can now be stored in separate data files within the file system – the Resource Manager now hides this implementation change from the client code.

See also[edit]

References[edit]

  1. ^'Mac OS X Resource Forks'. Retrieved 2012-10-22.
  2. ^'Resource Manager Reference'. Retrieved 2012-10-22.
  3. ^'Using Pathnames'. developer.apple.com. 2002-12-18. Archived from the original on 2002-12-18. Retrieved 2002-12-18.CS1 maint: bot: original URL status unknown (link)
  4. ^'OS X v10.5, v10.6: About named streams on SMB-mounted NAS, OS X, and Windows servers'. Retrieved 2010-04-19.
  5. ^'The Early History of Smalltalk'. Retrieved 2008-07-24.

External links[edit]

  • The Grand Unified Model – History of the resource fork, from folklore.org
  • Rezycle – Resource extraction tool
  • Mac OS X Services – A Mac OS X Service to delete the resource fork of a file through context menu
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