[bug #58654] -perm -+w does not behave like chmod (POSIX)

Mohamed Akram <[email protected]> Thu, 25 Jun 2020 16:48:17 -0400 (EDT)

Newsgroups	gmane.comp.gnu.findutils.bugs
Message-ID	<[email protected]>

URL:
  <https://savannah.gnu.org/bugs/?58654>

                 Summary: -perm -+w does not behave like chmod (POSIX)
                 Project: findutils
            Submitted by: mohdakram
            Submitted on: Thu 25 Jun 2020 08:48:15 PM UTC
                Category: None
                Severity: 3 - Normal
              Item Group: None
                  Status: None
                 Privacy: Public
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
                 Release: 4.7.0
         Discussion Lock: Any
           Fixed Release: None

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Details:

On macOS, using built-in find:

$ umask
0022
$ touch file
$ chmod +w
$ find file -perm -+w
file

On Fedora, using GNU find:

$ umask
0002
$ touch file
$ chmod +w
$ find file -perm -+w

Per POSIX, find should find file because it satisfies +w given the current
umask. The umask should only be ignored if u/g/o are specified or if = is
used. This is the same behavior as chmod. GNU find seems to always ignore the
umask.




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