Linux (Ubuntu 9.04) permissions - how do I remove rws?

Question

I have a directory that has rwxrwsr-x as its permissions and I need to set group to rwx. How can I do this on the command-line? I have root access.

Answer 1

rwxrwsr-x means that the set group ID is set. You can turn off set GID by doing this:

chmod g-s [name]

Answer 2

sudo chmod g-s name

Answer 3

chmod g-s <target> should be enough.