Binary package “cron” in ubuntu precise

process scheduling daemon

 The cron daemon is a background process that runs particular programs at
 particular times (for example, every minute, day, week, or month), as
 specified in a crontab. By default, users may also create crontabs of
 their own so that processes are run on their behalf.
 Output from the commands is usually mailed to the system administrator
 (or to the user in question); you should probably install a mail system
 as well so that you can receive these messages.
 This cron package is configured by default to do some basic daily system
 maintenance tasks. Other packages, such as checksecurity, can provide further
 maintenance tasks.