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From: navarra@casbah.acns.nwu.edu (John Navarra)
Newsgroups: comp.unix.misc
Subject: Permission Question
Message-ID: <1991Mar9.212943.1961@casbah.acns.nwu.edu>
Date: 9 Mar 91 21:29:43 GMT
Sender: navarra@casbah.acns.nwu.edu (John Navarra)
Distribution: na
Organization: Northwestern University
Lines: 36


   I am running SunOS and I was wondering about the following:

ls -lasd  /somedir on my machine:
  20 drwxrwsrwt   2 daemon   staff       9728 Mar  9 12:37 /some dir


 Now you see that this dir has its sgid bit on which means (if I remember 
 correctly) that when you make a file in this dir, it is given the same
 guid. Let's see:

 vi somefile
 ls -las | grep somefile:

   2 -rw-------   1 navarra  staff          2 Mar  9 12:41 somefile

 id:
 groups=20(users)

 I am not a member of staff but I wanted to see if I could do the following:

 cp /bin/sh /somedir/sh
 chmod g+s /sh
 ls -las | grep sh
 
 224 -rwx--x--x   1 navarra  staff     106496 Mar  9 13:18 sh


 AS you see I was not able to set this bit. I was wondering if you actually
 have to be a member of the group to set its bit? Is this true on all Unix
 systems?


 From the Lab of the MaD SCiEntIsT:
 navarra@casbaha.acns.nwu.edu