Re: can someone explain crontab to me better?
From: Benjamin Sobotta (mayday_at_gmx.net)
Date: 09/19/04
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To: robg <robg.list@gmail.com> Date: Sun, 19 Sep 2004 20:04:40 +0000
Hi!
Those entries have nothing to do with duration.
The entry of you would run every two hours or better every even hour and then
every 5 minutes like:
8:00
8:05
8:10
.
8:55
10:00
10:05
10:10
.
.
.
so if you want something to run every two hours it should look like
10 */2 * * * root /usr/libexec/locate.updatedb
This would make it run like
8:10
10:10
12:10
.
.
I hope this helps - and works :) Haven't tried it.
Cheers,
Ben
On Sunday 19 September 2004 17:42, robg wrote:
> hi,
>
> i am having a hard time understanding crontab after reading
> http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/configtuning-cron
>.html .. i still can't understand the minutes/hours...
>
> when you specify minutes, does it mean the command is run every X
> minutes? and if you specify a hour AND minutes, the command is run
> every X hours for X minutes? so if i did
>
> */5 */2 * * * root /usr/libexec/locate.updatedb
>
> it would run that command every two hours for 5 minutes? so when two
> hours comes around, itll keep running that command over and over for 5
> minutes? or will it run that command once every 5 minutes for two
> hours? im confused
>
> i just want to know the syntax to run something every 2 hours once ..
> can someone clarify this
>
> thanks
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- Previous message: robg: "can someone explain crontab to me better?"
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