On 18 Nov 2002, SainTiss wrote: > Hi, > > I'm trying to figure out how cron/at work/cooperate... > > How, for example, does cron determine that the scripts in > /etc/cron.daily need to be executed? Does it just do that at midnight? > Or does it know when 24 hours have passed since the last execution?
Cronjobs are specified by /etc/crontab. On mandrakesystems (and others as well) crontab is initially configured to run the scripts in fx. cron.daily once every day. The format of the file is: minute hour day_of_month month weekday user action so 22 4 * * 0 root run-parts /etc/cron.weekly runs "run-parts /etc/cron.weekly" as root every monday (0) at 4:22 (am) > Also, I believe that, if the system is down when the execution should > take place, at takes over... When does the execution of the > /etc/cron.daily scripts take place in that case? "at" simply runs a job at a specified time. Could be a script that checks if cronjobs has been run. But usually if you have a system that is not up all the time anacron takes care of the cronjobs -- ./mvh Christian Jul Jensen stud.scient.dat proff.scriptkiddie
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