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Re: restart cron in Solaris


From: Daniel Nilsson
Subject: Re: restart cron in Solaris
Date: Tue, 11 Dec 2001 08:02:11 +0100 (CET)

I always thought that crontab -e did:

* crontab -l > /tmp/crontabhRaO1I...
* vi /tmp/crontabhRaO1I...
* crontab /tmp/crontabhRaO1I...

At least it does that on Solaris...

Well well, I'll go for your solution for now. :)

Thank you all!

/// D

On Mon, 10 Dec 2001, Katherine Morris wrote:

> What exactly do you think you're doing when you do crontab -e? You're
> overwriting that very same file, and invoking cron to re-read all at the
> sametime via the wonderful -e option.
>
> It's not magic folks, just use editfile to change the crontab file and then
> using a shell command to tell cron
> to re-read it.
>
> -Katherine
>
> ----- Original Message -----
> From: "Dan Zubairi" <address@hidden>
> To: "Daniel Nilsson" <address@hidden>
> Cc: "Katherine Morris" <address@hidden>; "Alan Silver"
> <address@hidden>; <address@hidden>
> Sent: Monday, December 10, 2001 7:25 PM
> Subject: Re: restart cron in Solaris
>
>
> >
> > No its not safe. The change will not take place unless you re-start cron.
> >
> > use crontab -e username
> >
> > >
> > > Is this safe? Seems dangerous to edit /var/spool/cron/crontabs/root
> > > directly, cron is placing the real file here, what if cron overwrites
> the
> > > edits?
> > >
> > > Anyone else using this method?
> > >
> > > I cant find the "old" discussion in the archives... any pointers?
> > >
> > > /// Daniel
> > >
> > > On Fri, 7 Dec 2001, Katherine Morris wrote:
> > >
> > > > I'm using shell command, crontab takes a file as an argument.
> > > >
> > > > crontab /var/spool/cron/crontabs/root
> > > >
> > > > ----- Original Message -----
> > > > From: "Alan Silver" <address@hidden>
> > > > To: "Daniel Nilsson" <address@hidden>
> > > > Cc: <address@hidden>
> > > > Sent: Friday, December 07, 2001 1:17 PM
> > > > Subject: Re: restart cron in Solaris
> > > >
> > > >
> > > > > Daniel:
> > > > >
> > > > > I don't believe that cron accepts any signals. You will need to kill
> and
> > > > > restart the cron in order for your example to work. But, it might be
> > > > > easier to just use crontab -e rather than  editing a tmp file. That
> way,
> > > > > you won't have to worry about stopping and restarting cron. YOu
> should
> > > > > be able to do your example using crontab -e.
> > > > >
> > > > > alan
> > > > >
> > > > > Daniel Nilsson wrote:
> > > > > >
> > > > > > Does sending HUP to cron really reread crontabs in Solaris?
> > > > > >
> > > > > > Ive tried:
> > > > > >
> > > > > > "cron"     signal=hup inform=false
> > > > > >
> > > > > > But it doesnt work...
> > > > > >
> > > > > > How are you editing crontabs? (crontab -l > /tmp/aaa;vi
> /tmp/aaa;crontab
> > > > > > /tmp/aaa) ???
> > > > > >
> > > > > > /// Daniel
> > > > > >
> > > > > > _______________________________________________
> > > > > > Help-cfengine mailing list
> > > > > > address@hidden
> > > > > > http://mail.gnu.org/mailman/listinfo/help-cfengine
> > > > >
> > > > > --
> > > > > Alan Silver
> > > > > UNIX Systems Administrator
> > > > > Harvard Business School
> > > > >
> > > > > 617-495-5801
> > > > > address@hidden
> > > > >
> > > > > "The two prime movers of the Universe are Time and Luck"
> > > > >    -- Kurt Vonnegut
> > > > >
> > > > > _______________________________________________
> > > > > Help-cfengine mailing list
> > > > > address@hidden
> > > > > http://mail.gnu.org/mailman/listinfo/help-cfengine
> > > >
> > > >
> > >
> > >
> > > _______________________________________________
> > > Help-cfengine mailing list
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> > > http://mail.gnu.org/mailman/listinfo/help-cfengine
> > >
> >
> >
> > _______________________________________________
> > Help-cfengine mailing list
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> > http://mail.gnu.org/mailman/listinfo/help-cfengine
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