[CentOS] Runing a script under cron. Append stdout and, stderr
to a log file, propagate stderr back to cron for email, reporting
David G. Miller
dave at davenjudy.org
Sun Sep 23 14:13:34 UTC 2007
"Alexander Georgiev" <alexander.georgiev at gmail.com> wrote:
> I want to run a rsync-ing script in cron, generating a very verbose
> -vv rsync log in a log file. The log file should combine both stderr
> and stdin, which is easy:
> backup.sh >>/var/log/backup.log 2>&1
> However, I would like to propagate only stderr to cron - in case there
> has been an error, cron will mail me the assembled stderr output.
If you just want STDERR to get mailed to root (or wherever you specify),
remove the "2>$1" from your cron entry. This is what instructs the
shell to combine STDOUT with STDERR. Your cron entry should look like:
backup.sh >>/var/log/backup.log >> /var/log/backup.log
to append STDOUT output to backup.log. cron automatically mails any
output from programs.
Politics, n. Strife of interests masquerading as a contest of principles.
-- Ambrose Bierce
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