Davit Avsharyan <avshar...@gmail.com> wrote:
> 1/ I'm wondering why most of the system users have valid shells by
> default ?
> /cat /etc/passwd | grep -E '(sh|bash)' | wc -l
> *21*/
That's not necessarily sufficient to determine valid shells: the absence
of a shell definition implies the use of /bin/sh, so you need to check
that, too.
Something like this should probably give you a definitive list -
SS=$(grep '^/' /etc/shells | xargs)
for S in $SS ''; do
getent passwd | awk -F: -v S="$S" '{if ($7 == S) print $1, $7}'
done
Chris
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