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Where does standard output go given there is now screen?

It's not appearing in the same directory or my home directory.

How could I actually figure this out given that I don't know how to run debug or trace on a background job.

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Output is usually sent via email. – donothingsuccessfully Jun 12 '12 at 19:23
I recommend using mutt, "a small but very powerful text-based mail client", to read the output. It is has been in the repositories for every distro I've used. – solo Jun 12 '12 at 19:35

1 Answer

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From the cron man page:

When executing commands, any output is mailed to the owner of the crontab (or to the user named in the MAILTO environment variable in the crontab, if such exists). The children copies of cron running these processes have their name coerced to uppercase, as will be seen in the syslog and ps output.

So you should check your/root's mail, or the syslog (eg. /var/log/syslog).

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