10 * * * * offlineimap -u ttyui > /home/lu/.offlineimap.log
*  * * * * /home/lu/.bin/warn-if-low.sh
*  * * * * date --rfc-3339=seconds >> /home/lu/.pings

* 0-7,19-23 * * * DISPLAY=:0 zenity --error --text "get off the computer!"