Standard Permissions and/or ACLs in OS X

  • I have noticed that on Leopard, directories such as /usr/bin and /usr/
    local are set read & write permissions for Admin accounts.
    On my own Tiger, this is not the case, I am curious if they should be
    writeable by Admins or the Admin group.

    And more generally, is there a canonical list of the standard/default
    permissions on directories & files in OS X anywhere?

    If there is not such a list, perhaps we should have one as a
    reference to facilitate programmers maintaining the integrity of the
    permissions and ACLs on things whenever & wherever possible or
    appropriate. In addition, such a guide might help to avoid
    permissions escalation security risks.
  • That's not the case on my Mac Pro. Both those directories and the
    files in them are set to root:wheel, and group perms are rx only. [And
    admins are not members of wheel]

    On 1 Feb 2008, at 15:52, John Joyce wrote:

    > I have noticed that on Leopard, directories such as /usr/bin and /
    > usr/local are set read & write permissions for Admin accounts.
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