Date: Thu, 26 Dec 2002 12:23:07 -0500 From: Mike Jeays <mj001@rogers.com> To: Kirk Bailey <idiot1@netzero.net> Cc: FreeBSD-Questions@FreeBSD.ORG Subject: Re: cron/crontab befuddlement Message-ID: <3E0B3AFB.4050607@rogers.com> References: <3E0B2984.7020405@netzero.net>
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Kirk Bailey wrote:
> ok, I read man cron and man crontab, and it's as clear as mud.
> Anyplace I can read more and maybe make the light dawn on this useful
> feature? OR, would anyone care to explain more?
>
Basically, you create a file where each line is a command to be executed
on a given schedule. The line looks like this (first line is a
descriptive comment):
#minute hour mday month wday command
15 5 * * *
/home/mike/bin/FindAll
This says to run the command /home/mike/bin/FindAll at 15 minutes past
5, every day.
The asterisks mean "ignore this field", in effect.
Wday is the day of the week (I think Sunday=0, Monday 1 etc, but check)
Month is the month, either 1-12 or a three-letter abbreviation, such as
"Oct"
Mday is the day of the month.
So to run something at 11:15 on October 1st, you would say:
15 11 1 Oct * /home/me/mycommand.
You must create this file by running "crontab -e", which will put you into
your favourite editor. You can examine the file with "crontab -l"
That's it, in a nutshell - details are from memory, so please check!
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