How to set system wide umask?

Question

I am working in a lab where we are running Linux (Debian and Ubuntu). Usernames and group names are handled by NIS and yp. We have some common users that everybody has acces

Answer 1

In order to match up the group rights, on the server, the set gid bit (one of the "sticky bits") can be considered as an additional option.

If the shared directory is linked to the group, launching (using root) : chmod -R 2775 folder_for_the_group may be interesting.

For any new file created in the folder, the creator will be the owner, but the group will be automatically specified (as long as the creator is part of the group).

Rights' grid now appears as -rwxrwsr-x+