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Re: restart cron in Solaris


From: Katherine Morris
Subject: Re: restart cron in Solaris
Date: Mon, 10 Dec 2001 22:48:18 -0500

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
> > address@hidden
> > http://mail.gnu.org/mailman/listinfo/help-cfengine
> >
>
>
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