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Re: cron in cygwin


This is *way* too complicated.  It's fine if you run other things using
sysvinit, but if all you want is cron, try the way described in
/usr/doc/Cygwin/cron.README (you did read it, didn't you?  that directory
contains the necessary instructions specifically for the Cygwin ports --
see <>).

Regarding your "NOTE 1" below -- is it reproducible?  Could you please
post the output of "getfacl filename" before and after "chown filename"?
Perhaps Pierre or Corinna could comment on this?

On Wed, 7 May 2003, Bill C. Riemers wrote:

> I'd love to hear the "correct" answer for this.  This is the solution I've
> come up with, and but it is way too complicated...
> 1. Install the SYSV init package.
> 2. Configure the "init" package:
>     /usr/bin/init-config
> 3. Replace the /etc/inittab with the one I've attached.
> 4. Save the attached script as /usr/sbin/ .
> 5. Create the directory /var/lock/subsys:
>       mkdir -p /var/lock/subsys
> 5. Uninstall the init service:
>       cygrunsrv -R init
> 6. Install the script as the init service:
>       cygrunsrv -I init -p /usr/sbin/  -d "CYGWIN init" -s INT -o
> 7. Stop the new service:
>       cygrunsrv --stop init
> 8. Clean the /var/log directory:
>       rm /var/log/*
>     (Some daemons refuse to start otherwise.)
> 9. Save the attached cron script as /etc/rc.d/init.d/cron
> 10. Create the following symbolic links:
>       ln -s /etc/rc.d/init.d/cron /etc/rc.d/rc0.d/K25cron
>       ln -s /etc/rc.d/init.d/cron /etc/rc.d/rc1.d/K25cron
>       ln -s /etc/rc.d/init.d/cron /etc/rc.d/rc2.d/S25cron
>       ln -s /etc/rc.d/init.d/cron /etc/rc.d/rc3.d/S25cron
>       ln -s /etc/rc.d/init.d/cron /etc/rc.d/rc4.d/S25cron
>       ln -s /etc/rc.d/init.d/cron /etc/rc.d/rc4.d/S25cron
>       ln -s /etc/rc.d/init.d/cron /etc/rc.d/rc6.d/S25cron
> 11. Restart the init service:
>       cygrunsrv --start init
> NOTE 1:
> If you have problems, try removing files that are automatically created, and
> start the daemon again.  Something that took me a long time to realize is
> "chown" does not work correctly under CYGWIN
> on  Windows XP.  It will change the "owner" that cygwin shows the file as
> owned by.  However,
> it doesn't actually effect permissions.  i.e.
>       echo "hi" > foo.txt
>       chmod 600 foo.txt
>       chown SYSTEM foo.txt
> will create a file that appears to be owned by SYSTEM and only accessible by
> "SYSTEM".  However, the "SYSTEM" user will get an EPERM error when trying to
> read or write the file...
> So even if a file appears to have the correct ownership under "ls" and
> "getfacl", it might not...
> I have not figured out a way to determine the "real" owner of a file.
> NOTE 2:
> My script steps back and forth through the run levels.  This is
> mainly to simulate the behavior I'm used to.  If everything is configured
> correctly, it should be sufficient just to switch to runlevel 6 when
> shutting down and to your default run level when starting up.
>                                                    Bill
> ----
> To:
> From: "Sanjay Goel" <>
> Subject: cron in cygwin
> Date: Wed, 7 May 2003 13:13:37 +0530
> Message-ID: <b9ad70$hkh$>
> I want to run updatedb every week ... I wrote the following in my crontab
> 0 22 * * 2 updatedb --localpaths="/ /c /d /e"
> but it never works.
> Can somebody tell me how to set cron jobs in cygwin.
> Thanks in advance
> Sanjay

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