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Editor to share with you how to use the Bash script in linux to send an email containing a list of user accounts that expire within a few days. I believe most people don't know much about it, so share this article for your reference. I hope you can learn a lot after reading this article. Let's learn about it.

1) check the list of user accounts that expire after 10 days

This script will help you check the list of user accounts that expire within 10 days on the terminal.

# vi / optamp scriptAccordUserPayPasswordwords. Echo echo "- -" echo "UserName The number of days the password expires" echo "-- -- "for usern in u1u2u3u4dotodaytime $(date +% s) userexpdate=$ (chage-l $usern | grep 'Password expires' | cut-d:-f2) passexp=$ (date-d" $userexpdate "" +% s ") exp= `expr\ ($passexp-$today\) `expday= `expr\ ($exp / 86400\) `echo" $usern $expday "> > / tmp/user-expiry.txtdonecat / tmp/user-expiry.txt | awk' $2

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