-t STDIN is definitely very useful; it tells you whether the script is running interactively. But keep in mind that a script can be run from the command line without being run interactively: echo "Hi!" | perl -wle 'print -t() ? "" : "not ", "interactive"' So it might not do what the original poster wants in this case.

In reply to Re: (tye)Re: Detecting running from cron? by chipmunk
in thread Detecting running from cron? by oakley

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