To learn more about configuring automated tasks, refer to the following
cron man page — overview of
crontab man pages in sections 1 and 5
— The man page in section 1 contains an overview of the
crontab file. The man page in section 5
contains the format for the file and some example entries.
contains more detailed information about the times that can be
specified for cron jobs.
at man page — description of
at and batch and their
command line options.