Days left before password expires

let NOW=`date +%s`/86400 ; PASS_LAST_CHANGE=`grep $USER /etc/shadow | cut -d: -f3` ; PASS_LIFE=`grep $USER /etc/shadow | cut -d: -f5`; DAYS_LEFT=$(( PASS_LAST_CHANGE + PASS_LIFE - NOW)) ; echo $DAYS_LEFT
This works only with GNU date. In solaris the command: date +%s doesn't work. You can try using the following instead: nawk 'BEGIN {print srand()}' should give the same output as date +%s under Solaris.
Sample Output



The lastter one means that the password never expire.

2010-11-05 23:03:48

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What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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