Using chown often requires root access, so this command is almost always preceded by the sudo command. Short for “change ownership,” chown will let you change the owner and group associated with a file or folder. You will use two primary commands for changing file and folder permissions in the command line: chown for changing ownership and chmod for changing privileges. Modifying File Permissions via Command Line To view an item’s ACLs alongside their permissions, simply add the -e option to the -l option: In this folder, apply to any new child folders, apply to any new child files, and apply to all descendants of this folder. Inheritance attributes include the following: no inheritance, apply to just new items Read file data or create files in folder, append file data or create new subfolder inside folder, delete item, and deleteįurthermore, each ACE for a folder can include a static inheritance rule that defines whether the folder’s permissions alsoĪpply to new items placed in the folder. Write-Write attributes define a user’s or group’s ability to make changes and include write attributes, write extended attributes, Read-Read attributes define a user or group’s ability to read items and include read attributes, read extended attributes, readįile data or list folder contents, execute file or traverse folder, and read permissions. Rules, or ACEs, which can be used to allow or deny any of the following privilege attributes:Īdministration-Administration attributes, which define a user’s or group’s ability to make permissions changes, include change privileges In other words, you can assign an item an unlimited number of user or group You define each as a specific allow or deny rule. On the system can have an unlimited list of ACE rules, hence the “list” in ACLs.įrom the command line, Mac OS X’s ACL implementation provides more than a dozen unique privilege attribute types and lets Each permissions rule is known as an Access Control Entry (ACE). The ACL technology is more advanced than traditional UNIX-style permissions because it allows for an arbitrary number of userĪnd group permissions rules per item. When you make permissions changes using the Get Info window.Ĭlick to view larger image Viewing Access Control Lists (ACLs) The Finder doesn’t show you when the execute privilege is used, but it will properly manage the execute privilege The execute privilege is also required on normal folders to access the contents of Is enabled on files that are commands and applications (or folders that contain application bundles), to indicate that the The execute privilege attribute x has not been introduced yet, but it is the third standard UNIX privilege attribute after read and write.
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