I have a file owned by a different user with permissions 440. When I do ‘groups’ I don’t belong to the group of the file, but when I do ‘groups my_username’ I do.
Why am I able to open the file if my current shell does not have access to the group?
Asked
Active
Viewed 46 times
1
-
1I'm guessing the output of `groups` is cached by your shell and is stale. The shell's cache doesn't influence access checks performed by the kernel. – D. SM Oct 30 '20 at 04:29
-
@D.SM: What shell has `groups` as a builtin? Is there some other way that the shell could cache the output of `groups`? – G-Man Says 'Reinstate Monica' Oct 30 '20 at 07:45
-
Maybe not the shell, but there is still a cache somewhere. – D. SM Oct 30 '20 at 14:31
-
What does `id` show? – waltinator Nov 01 '20 at 14:02