execute commands scheduled by at, batch, and crontab
The cron command is the clock daemon that
executes commands at specified dates and times.
processes jobs submitted with
cron never exits; the cron command usually appears in the
/etc/rc2 scripts to be invoked by
when the system is brought up in multiuser mode.
The variable MAXCRON, if set in /etc/default/cron,
controls the maximum number of running processes that cron
can own at any one time. The default value is 100.
A history of all actions by cron can be recorded in
/usr/lib/cron/log. This logging occurs only if the variable
CRONLOG is set to YES in /etc/default/cron.
By default this value is set to NO and no logging occurs.
If logging is turned on, you can use
the variable MAXLOGSIZE defined in
/etc/default/cron to limit the size in 512-byte blocks
to which the log file will grow. If it exceeds this limit, its contents
are moved to /usr/lib/cron/olog.
The default value of MAXLOGSIZE is 2048 blocks.
cron will set the supplemental group list to that of the
user requesting the job.
cron default configuration
main cron directory
overflow file for log file
cron data file
cron is conformant with:
AT&T SVID Issue 2.
© 2003 Caldera International, Inc. All rights reserved.
SCO OpenServer Release 5.0.7 -- 11 February 2003