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OS X Mountain Lion: Set permissions

Set permissions

Permission settings determine who can view and alter disks, folders, and files.

Assign permissions to users and groups

  1. Select a disk, folder, or file, and then choose File > Get Info.
  2. If the Sharing & Permissions pane isn't visible, click the disclosure triangle to show it.
  3. If you don’t own the item, click the lock icon to enter an administrator’s name and password.
  4. Select a user or group from the Name column, and then choose one of the following from the pop-up menu in the Privileges column:
    Option Description
    Read & Write: Allows a user to open the item and change it.
    Read Only: Allows a user to open the item, but not change its contents.
    Write Only: Makes a folder into a drop box. Users can copy items to the drop box, but can’t open the drop box. Only the owner of the drop box can open it.
    No Access: Blocks all access to the item.

Apply permissions to all items in a folder or a disk

You can apply a folder’s or a disk’s permissions to every item in the folder or disk.

  1. Select a folder or a disk, and then choose File > Get Info.
  2. Click the lock icon to enter an administrator’s name and password.
  3. Choose "Apply to enclosed items" from the Action pop-up menu (looks like a gear).

Change an item’s owner

  1. Select the item, and then choose File > Get Info.
  2. Click the lock icon to provide an administrator’s name and password.
  3. If the new owner’s name isn’t listed in the Name column in the Sharing & Permissions section, click Add (+) to add the new owner.
  4. Select the new owner in the Name column, and then choose “Make __ the owner” from the Action pop-up menu (looks like a gear).

Add or remove a user or group in the Name column

  1. Select an item, and then choose File > Get Info.
  2. If you don’t own the item, click the lock icon to provide an administrator’s name and password.
  3. In the Sharing & Permissions section, do one of the following:
    • To add a user or group, click Add (+) below the table, select a user or group, and then click Select.

    • To remove a user or group, select the user or group, and then click Delete (-) below the table.

Undo changes

You can undo any changes made in the Sharing & Permissions section of an Info window since opening it, except applying permissions to all the items in a folder or disk.

  1. Make sure the Info window remains open after making your changes.
  2. Choose “Revert changes” from the Action pop-up menu (looks like a gear).

Set permissions of shared folders

  1. In the Finder, select the shared folder, and then choose File > Get Info.

    You can also select an unshared folder, choose File > Get Info, and then make the folder shared by selecting “Shared folder” in the General section of the Info window.

  2. Use the Sharing & Permissions pane to assign permissions to users and groups.
Last Modified: Aug 8, 2013
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  • Last Modified: Aug 8, 2013
  • Article: PH10669
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