minix man page for cron

CRON(8) 						      System Manager's Manual							   CRON(8)

NAME
       cron - clock daemon

SYNOPSIS
       cron

EXAMPLES
       /usr/bin/cron	   # Use absolute path in /etc/rc

DESCRIPTION
       Cron  is  clock	daemon.   It  is typically started up by including the command /usr/bin/cron in the /etc/rc file.  Once started, cron puts
       itself in the background, so no & is needed.  It runs forever, sleeping most of	the  time.   Once  a  minute  it  wakes  up  and  examines
       /usr/lib/crontab  to  see  if  there is any work to do.	If there is, the work is done.	The entries of /usr/lib/crontab contain 6 elements
       each.  Some examples follow:

	Min   Hr Dat	 Mo		       DayCommand
	 *  *  *  *  *	 /usr/bin/date >/dev/log   #print date every minute
	 0  *  *  *  *	 /usr/bin/date >/dev/log   #print date on the hour
	30  4  *  * 1-5  /bin/backup /dev/fd1	   #do backup Mon-Fri at 0430
	30 19  *  * 1,3,5		       /etc/backup /dev/fd1	 #Mon, Wed, Fri at 1930
	 0  9 25 12  *	 /usr/bin/sing >/dev/log   #Xmas morning at 0900 only

SEE ALSO
       at(1).

																	   CRON(8)