CRON(1M)                 DOMAIN/IX SYS5                  CRON(1M)



NAME
     cron - clock daemon

USAGE
     /etc/cron

DESCRIPTION
     Cron executes commands at the dates and times specified in
     /usr/spool/cron/crontabs/userid.  In typical DOMAIN/IX
     installations, both /usr/spool/cron and /usr/lib/cron are
     links to the per-node directory `node_data/cron.  You can
     run a command periodically by placing it in this file.  To
     run a command at a specified time once, rather than regu-
     larly, use the at(1) command.

     Cron is usually started at boot time by an entry in the
     node's `node_data/etc.rc file.

     Cron examines the node's `node_data/cron/crontabs directory
     when it is invoked, and whenever a user creates a new cron-
     tab file by using crontab(1).

NOTES
     The process created by /etc/cron will automatically be named
     cron.

EXAMPLE
     A line of the form

     0 2 * * * /etc/crpasswd


     in the /usr/lib/crontab file on the master system
     administrator's node will run crpasswd at 2:00 AM every
     morning.

FILES
     /usr/lib/cron  Main cron directory (link to `node_data/cron)

     /usr/spool/cron
                    cron spool area (link to `node_data/cron)

     /usr/spool/cron/crontabs/userid
                    Per-user crontab files.

     /usr/lib/cron/cron.*
                    Permissions files (cron.allow, cron.deny)

     /usr/lib/cron/log
                    Log file.



Printed 12/4/86                                            CRON-1

CRON(1M)                 DOMAIN/IX SYS5                  CRON(1M)



DIAGNOSTICS
     Cron records all its actions in /usr/lib/cron/log.

RELATED INFORMATION
     at(1)
     crontab(1)
     rc(1M)
     sh(1)













































CRON-2                                            Printed 12/4/86