#!/bin/bash

users=$(grep "Wk0009-1800" /etc/security/time.conf | grep -v "^#" | awk -F";" '{print $3}')
if [ -z $users ]; then
    exit
fi

for term in $(who -u | grep -E  "$users" | awk '{print $2}'); do
    echo "your session will be destroyed at 5 minutes. Please save all unsaved data" > /dev/$term
done

sleep 250
for term in $(who -u | grep -E  "$users" | awk '{print $6}'); do
    kill $term
done