Short crontab crib info sheet
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Put a shell script in one of these folders:
If these are not enough for you you can add more specific tasks eg. twice a month or every 5 minutes or... go to the therminal and type:
this will open your personal crontab (cron configuration file), the first line in that file explains it all (don't you think)! In every line you can define one command to run, and the format is quite simple when you get the hang of it. So the structure is:
For all the numbers you can use lists eg,
You can also use intervals, they are defined like this:
So to run a command every monday at 5:30 in efternoon will look like this:
or every 15 minutes
Note that the day-of-week goes from 0-6 where 0 = sunday.
You can read more here.