How to get process information of usernames in /etc/passwd in linux shell

Question

I have extracted all usernames of /etc/passwd by command below and save them in another file:

cat /etc/passwd | awk -F ":" {print $5} > temp.txt

and now I want to get process information of each username of "temp.txt" but I don't know how to do it. Furthermore how to examine who have logged in the system during the last day and which command(s) s/he has executed?

There are no users on the system which are not in `/etc/passwd`. You simply need a listing of all processes. — tripleee, Feb 23 '14 at 20:00
Your second question should simply be posted as a separate question, but Stack Overflow is a programming site, so it's not on-topic here. Try http://serverfault.com/ — tripleee, Feb 23 '14 at 20:01
If you want itemized by user, `cut -f1 /etc/passwd | xargs -n1 ps -u` — tripleee, Feb 23 '14 at 20:05

score 1 · Accepted Answer · answered Feb 23 '14 at 21:48

1

Try doing this :

for u in $(<temp.txt); do echo "$i processes:"; pgrep -fl -u "$u"; done

answered Feb 23 '14 at 21:48

Gilles Quénot

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How to get process information of usernames in /etc/passwd in linux shell

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