how to remove the set-group-ID

sunilvadranapu · 08-14-2008, 07:17 AM

hi,

i have a file with following permissons:
drwx--S--- 2 ab230081 4096 Aug 14 17:18 public/

i want to set its permssions as
drwxr-xr-x 2 ab230081 4096 Aug 14 17:18 public/

withouts 's' flag

can any one tell me how to remove the set-group-ID from file/dir permissons?

thanks in advance

-sunil

blackhole54 · 08-14-2008, 07:53 AM

Code:

chmod 755 public

would be the most straigh forward way. There are other ways.

For more explanation type

info chmod

and follow the note on "file permissions." (If you are using a distro that provides info files.)

dalvarez · 02-07-2010, 05:36 PM

chmod 775 <filename> will most likely not remove the set group id flag.
Unless explicitly asked to do so, chmod will not touch it. I tried it on Debian 5 and it does not work.

Use chmod g-s <filename> instead to remove it.

blackhole54 · 02-10-2010, 06:20 AM

Quote:

Originally Posted by dalvarez

chmod 775 <filename> will most likely not remove the set group id flag.
Unless explicitly asked to do so, chmod will not touch it. I tried it on Debian 5 and it does not work.

That's strange. It works on Debian Etch (4.0):

Code:

jim@debian:~$ mkdir /tmp/a
jim@debian:~$ chmod 2700 /tmp/a
jim@debian:~$ ls -ld /tmp/a
drwx--S--- 2 jim jim 4096 2010-02-10 05:04 /tmp/a
jim@debian:~$ chmod 755 /tmp/a
jim@debian:~$ ls -ld /tmp/a
drwxr-xr-x 2 jim jim 4096 2010-02-10 05:04 /tmp/a
jim@debian:~$

debrah.h48 · 02-11-2010, 02:45 AM

Here you can get the steps to remove the set-group-ID
http://audible.custhelp.com/app/answ...tail/a_id/3867

blackhole54 · 02-11-2010, 07:10 PM

Quote:

Originally Posted by debrah.h48

Here you can get the steps to remove the set-group-ID
http://audible.custhelp.com/app/answ...tail/a_id/3867

Errr ... That link has something to do with Microsoft Windows, not the LInux question the OP posed!

In any event, dalvarez has already posted one generic method to clear the set GID bit. And I have posted a less generic method that works for the situation posed by the OP, While dalvarez has suggested my method does not work on Debian 5, on the systems I have tried it on (not including Debian 5) it works fine.