announcement-box/toolkit/human-activity-ago

#!/bin/bash

LAST_SEEN_FILE=/var/tmp/human_last_seen
LAST_CHECKED_FILE=/var/tmp/human_last_checked

LAST_SEEN=`stat /var/tmp/human_last_seen --format=%Y`
TIME_NOW=`date +%s`

AGO=$(( $TIME_NOW - $LAST_SEEN ))
echo $AGO