delete multiple users

Question

I am the root user and I am setting up a menu for another user to use. This other user will only get this menu.

There are two options that are interlinked: the first option is to search users. The code I got is:

last | awk '{print $1,$4,$5,$6,$7} ' 

I have checked this code and it works, it shows me the usernames and the day they last logged on.

For the second option: I want to be able to set a date, and them delete users who haven't been active since that date, using the output of the above command.

I am using Linux Mint and Vim text editor.

Answer 1

You can do it like so:

root@host# lastlog -b Num_Days_Since_Last_Login | egrep -v "^Username|Never logged in" | awk '{print $1}' | xargs -i userdel {}

Where Num_Days_Since_Last_Login is an integer number of days since last login...

Answer 2

A complete solution :

#!/bin/bash

maxdate=$(date -d "$1" +%s) || exit 1
daysdate=$((($(date +%s)-maxdate)/(3600*24)))

LANG=C lastlog -b $daysdate -u 1000- |
    awk 'NR>1{print $1}' |
    xargs -n1 echo userdel

Test it and remove echo to do it forReal™. Example usage :

./script.sh 'Fri Dec  5 17:00:06 CET 2013'