Crontab edition
# To use cron for tasks meant to run only for your user profile, add entries to
# your own user's crontab file. Start the crontab editor from a terminal window:
$crontab -e
# Commands that normally run with administrative privileges (i.e. they are
# generally run using sudo) should be added to the root user's crontab (instead of the user's crontab):
$sudo crontab -e
# see:
# https://help.ubuntu.com/community/CronHowto