topic Re: cron question in Operating System - HP-UX

cron question

Eric Harvill_1 — Mon, 11 Jun 2001 20:44:59 GMT

Is there a way to prevent a single cron entry from sending an email whenever it completes? Thanks...

Eric

Re: cron question

Uday_S_Ankolekar — Mon, 11 Jun 2001 21:01:08 GMT

redirect the output to file or then use mailx to send it as a e-mail. Or write a script to do cron job and send e-mail after competion of job

Re: cron question

A. Clay Stephenson — Mon, 11 Jun 2001 21:17:25 GMT

Hi Eric,

The easist thing to do is redirect your scrit's stdout and stderr to /dev/null.

Re: cron question

Eric Harvill_1 — Mon, 11 Jun 2001 21:27:14 GMT

I've actually tried that and it doesn't seem to be working. Perhaps my syntax is wrong? Here is the entry:

15,30,45,00 * * * * /opt/sysadm/bin/check_printer atlpsih8k1 2>&1 /dev/null

Thanks.

Eric

Re: cron question

Bill Hassell — Mon, 11 Jun 2001 23:17:59 GMT

Not wuite the correct syntax to redirect all output to /dev/null. The correct syntax is to first redirect stdout and then assign stderr to stdout:

...check_printer atlpsih8k1 1>/dev/null 2>&1

It must be in that order as the shell assigns things as it parses them, left to right. 2>&1 followed by > /dev/null means that stderr would be assigned to whatever stdout was, and then stdout is assigned /dev/null (stderr is still assigned to the original output file).

Re: cron question

Eric Harvill_1 — Wed, 13 Jun 2001 00:56:34 GMT

Bill, thank you for the correct syntax.