Can I use `chmod` to change the permission from -rwsr-xr-x to -rwsr-sr-x?

Question

Can I use chmod to change the permission from -rwsr-xr-x to -rwsr-sr-x?

Answer 1

chmod g+s filename

Answer 2

yes....the chmod command to use is

 chmod 6755 file1 ... filen

Answer 3

Yes, chmod allows any permissions changes on any file you own on a writable medium, including adding setgid. To do this, use:

chmod g+s <file>

The g+s sets the setgid bit on the file.

You can also specify the full permissions of the file:

chmod 6755 <file>

This changes the permissions of the file to -rwsr-sr-x.

In both cases, replace <file> with the actual name of the file. You can perform this operation on multiple files by putting more than one file name on the command line in place of <file>.

For more information on chmod and UNIX filesystem permissions, see the Wikipedia articles on chmod and filesystem permissions.