Error "tip: must be interactive" when run from crontab

James Long list at
Mon May 26 22:26:34 PDT 2003

I want to have my system dial a number, wait a certain amount of
time, and then hang up.  Specifically, this is to facilitate 
wake-up calls scheduled from /etc/crontab.

I want to use tip, but when I schedule a job invoked as:

tip cellphone

I get the emailed job output:

tip: must be interactive

The job works fine when run manually from a command prompt, when
I am already awake.  How can I have cron run it when I am asleep?


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