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| # measure command time in seconds (replace <command>) | |
| start=`date +%s%N`;<command>;end=`date +%s%N`;echo `expr $end - $start`/1000000000 | bc | |
| # get all groups | |
| compgen -g | |
| getent group | |
| cut -d: -f1 /etc/group | |
| # get all users | |
| compgen -u | |
| getent passwd | |
| cut -d: -f1 /etc/passwd |
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