Group Privileges

ericcvt19 · 09-29-2016, 05:33 AM

I'm new to using groups. Recently I've added a member to a group. I would like to know that if I assign an individual to a group, will the member be able to use chmod on the files/directory he/she is a member of. I've tried to change a file's permission and it, the OS, stated permission denied. I would like to hear others opinion to confirm what the OS stated.

malekmustaq · 09-29-2016, 05:39 AM

Quote:

I would like to know that if I assign an individual to a group, will the member be able to use chmod on the files/directory he/she is a member of.

No.
Only two accounts may do that: the owner of the file and the root.

In your given case the group member is given the "group" bit and the privileges thereon depends now on what powers are given to the group.

Hope that helps. Good luck and enjoy.

m.m.

jpollard · 09-29-2016, 09:51 PM

One other note: after adding a group to a user, that user has to logout and login again...

This is because the group membership lists are created at login time, then all processes created after that just inherit the list - thus adding a new group to a user doesn't effect the users existing processes.

linux4evr5581 · 09-29-2016, 10:15 PM

You can change ownership of the file using sudo chown NewUser NameofFileorDirectory, its recommended to use the -R after chown if its a directory to make it recursive down to all the files, so that the new owner will have ownership of all the files in that directory too, unless you wanted to manually configure them...

c0wb0y · 09-30-2016, 12:19 AM

Quote:

Originally Posted by jpollard

One other note: after adding a group to a user, that user has to logout and login again...

This is because the group membership lists are created at login time, then all processes created after that just inherit the list - thus adding a new group to a user doesn't effect the users existing processes.

Another option is to issue 'newgrp'. No need to log out and log back in.