Re: at command

["Yong-Ming P.Hua" <yhua@example.com>]

Hi,
    Thanks Thomas.
    Well you are right. I I have been using at command on some special occasion like
when uni building gives me a warning of power down all of a sudden while I am away.
But I just wanted to know regular thing....
    Yes, the crontab file stuff helps me a lot. I check it thoroughly. (Though I
don't do it for rebooting. sytemdownscript is just an example).

thanks again.

Thomas O'Dowd wrote:

> The at command is used mainly to run a once off job and not for
> something that is more regular. For more regular events use
> cron.
>
> Have a look at
>
> $ man 5 crontab
>
> which will tell you how to use the crontab file.
>
> If you want to add a weekly reboot, you might do this.
>
> $ crontab -e
> (this will start an editor for you so you can add cron entries)
> (add the following lines)
> # reboot on Sunday morning at 1am
> 0 1 * * 0 /root/systemdownscript
> (save and exit your editor)
>
> (now to list your entries, use the crontab command again with list mode)
> $ crontab -l
> # reboot on Sunday morning at 1am
> 0 1 * * 0 /root/systemdownscript
>
> Any output from the script will be emailed to the user with the crontab
> entry which should probably be root in this case.
>
> Hope this helps.
>
> Cheers,
>
> Tom.
>
> On Tue, Jan 16, 2001 at 04:04:44PM +0900, Yong-Ming P.Hua wrote:
> > Hi,
> >     It is Yong-Ming asking for help about 'at' command.
> > As far as I know, I have been able to use 'at' command all right in a form like
> > below,
> >    at 5am 1 July -f  /root/systemdownscript(my script with x mode).
> > But I want to use 'at' command regularly on a specific day. I checked man.
> > Doesn't seem to have any comment on the use of week of the day, like
> >   at 5am Sunday ...
> > Is the syntax all right? If not, give me the right one please? Sorry this is a
> > thing I have gotta check by myself. But somehow I have an error message coming
> > back every time I do it.
> --
> Thomas O'Dowd                   Have you had your noop today?
> tom@example.com                 http://www.nooper.com

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