RE: CRON tidbit

["Thompson-Jordan" <Thompson-Jordan@mindspring.com>]

******    message to minivend-users from "Thompson-Jordan" <Thompson-Jordan@mindspring.com>     ******

Thanks Frank. I will try to add a summary of this to the documentation.

If someone know how to do this in NT, please email me as well. Thanks.

> -----Original Message-----
> From: owner-minivend-users@minivend.com
> [mailto:owner-minivend-users@minivend.com]On Behalf Of Frank Miedreich
> Sent: Sunday, March 14, 1999 10:36 AM
> To: minivend-users@minivend.com
> Subject: Re: CRON tidbit
>
>
> ******    message to minivend-users from Frank Miedreich
> <miedreich@acm.org>     ******
>
> >******    message to minivend-users from "Thompson-Jordan"
> ><Thompson-Jordan@mindspring.com>     ******
> >
> >I am sure that you all know everything there is to know about cron and
> >crontab, but I just learned what the format of those cron files is and
> >thought I would share it. In the Minivend manual it says:
> >
> >     - Put this in crontab to expire session database
> >     44 4 * * * /home/user/minivend/bin/expireall -r
> >
> >What that line does is run the Minivend expireall program at
> 4:44 am each
> >morning. Why that wasn't clear to me I'll never know :-) Hey Mike? Why
> >4:44?
> >
> >The format for lines in your crontab is:
> >
> >     minute hour day month year program
> >
> >An asterisk mean "do every", so:
> >
> >     44 4 * * *    is every day at 4:44
> >
> >     30 12 1 * *   is every month on the 1st at 12:30
> >
> >There are a bunch of other complex and even more cryptic ways
> to specify
> >dates and times (after all it is Unix). On my system you type the
> >following to list your crontab (you may not need "-u username"):
> >
> >     crontab -u username -l
> >
> >To edit the crontab type the following, which brings up vi:
> >
> >     crontab -u username -e
> >
> >Good luck.
> >
>
> Please note that the fifth field is not the year, but the day
> of the week,
> 0 is Sunday and 6 is Saturday. Thus a line like:
>
> 32 23 * * 0 /home/user/minivend/bin/restart
>
> would restart the server every sunday night at 11:32pm. For a
> less cryptic
> way to specifiy times you can also say
>
> 32 23 * * sun /home/user/minivend/bin/restart
>
> on many systems.
>
> You can get the documentation by using
> man crontab
> to explain the command and
> man 5 crontab
> to get a complete explanation of the syntax for the crontab file.
>
> The output of the command will be send to you via email, unless
> you append
> a output redirection:
> 32 23 * * sun /home/user/minivend/bin/restart > /dev/null
> would delete the output.
>
> --
> Frank Miedreich
> Max-Planck-Institut fuer psychologische Forschung
>
>
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