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CRON.8
Upload User: jnzhq888
Upload Date: 2007-01-18
Package Size: 51694k
Code Size: 1k
Category:
OS Develop
Development Platform:
WINDOWS
- CRON(8) Minix Programmer'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 Day Command
- * * * * * /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).
- 1