[CentOS] Crontab not working....

Will McDonald wmcdonald at gmail.com
Mon Sep 25 11:48:21 UTC 2006

On 25/09/06, Ian mu <mu.llamas at gmail.com> wrote:
> Hiya, thanks for that Wil, gives me some ideas. I notice the Bad file
> descriptor error in there, I've pasted the part there it starts to run it
> below (I'm only using touch as a basic test as other cron entries don't
> work, touch outside of cron works fine). I'm a bit clueless looking at the
> rest really though, is it definitely the bad file descriptor thats causing
> it, and any ideas why as its fine outside of cron?
> read(6, "03 11 * * * /bin/touch /home/log"..., 4096) = 47
> lseek(6, 47, SEEK_SET)                  = 47
> read(6, "", 4096)                       = 0
> read(6, "", 4096)                       = 0
> close(6)                                = 0
> munmap(0x2a9556c000, 4096)              = 0
> close(6)                                = -1 EBADF (Bad
> file descriptor)

It looks to me like crond is opening your crontab file OK, it appears
to have read the line then choked on something.

Which editor are you using to edit the crontab? I wonder if it's
something weird in the CR/LF sequences? You could try running dos2unix
on /var/spool/cron/logadmin ? Could it possibly be SELinux? Have you
got SELinux enabled?

I'd also check the extended attributes of all files and directories
invoved in case something's out there (use "lsattr").


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