toggle screen saver on and off on an xwindows-using linux machine (tested only on Ubuntu)

monitors.sh

#!/bin/bash

case "$1" in
  on)
    /usr/bin/xset -display :0.0 dpms force on
    /usr/bin/xset -display :0.0 -dpms
    /usr/bin/xset -display :0.0 s off
    /usr/bin/xset -display :0.0 s reset
    ;;
  off)
    /usr/bin/xset -display :0.0 dpms force off
    /usr/bin/xset -display :0.0 dpms 60 90 120
    ;;
  ?)
    echo "Usage: monitors on|off"
    exit 1
    ;;
  *) #toggle
    if [[ "$(xset -q -display :0.0 | grep -i 'disabled')" == "" ]]
    then $0 on
    else $0 off
    fi
esac