cron(1M)                                                 cron(1M)



     NAME
          cron - clock daemon

     SYNOPSIS
          /etc/cron

     DESCRIPTION
          cron executes commands at specified dates and times.  You
          can schedule commands regularly with instructions in crontab
          files; other users can submit their own crontab file with
          command crontab(1).  Use at(1) for commands which execute
          only once.  Since cron never exits, you should should only
          execute it once.  cron is listed in the /etc/inittab file
          and is therefore started directly by init(1M).

          cron examines crontab files and at command files only during
          process initialization and when a file is updated using
          crontab.  This reduces the overhead of checking for new or
          changed files at regularly scheduled intervals.

     FILES
          /etc/cron
          /usr/lib/cron            main cron directory
          /usr/lib/cron/log        accounting information
          /usr/spool/cron          spool area
          /usr/lib/cron/queuedefs  scheduling information

     SEE ALSO
          at(1), crontab(1), sh(1), init(1M).

     DIAGNOSTICS
          A history of cron actions is recorded in /usr/lib/cron/log.























     April, 1990                                                     1