Differences

This shows you the differences between two versions of the page.

--- linux_wiki:schedule_tasks_using_at_and_cron [2016/02/29 21:44]
billdozor created
+++ linux_wiki:schedule_tasks_using_at_and_cron [2016/02/29 21:44]
billdozor [cron]
@@ Line 79: / Line 79: @@
 </code>
   * Executes /home/user/uptimelog as root, every 5 mins
+----
+==== Anacron ====
+Anacron runs all scripts in cron.* directories. This allows jobs to be run if the scheduled time was while a system was powered off.
+Main config and contents: /etc/anacrontab
+<code bash>
+#period in days   delay in minutes   job-identifier   command
+	5	cron.daily		nice run-parts /etc/cron.daily
+	25	cron.weekly		nice run-parts /etc/cron.weekly
+@monthly 45	cron.monthly		nice run-parts /etc/cron.monthly
+</code>
+Run all anacron jobs(in /etc/anacrontab), ignore timestamps (note that the "delay in minutes" setting is still in effect)
+<code bash>
+anacron -f
+</code>
+View timestamps for anacron jobs (cron.daily in this example)
+<code bash>
+cat /var/spool/anacron/cron.daily
+</code>
+Run all jobs now, ignore delay specifications in /etc/anacrontab
+<code bash>
+anacron -n
+</code>
 ----