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Tcpdump in cron

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# 1  
Old 07-20-2007
Tcpdump in cron
I wrote a short BASH script to run tcpdump and save the output to a log file for when I'm away from my desk. The script runs fine normally, but fails to start in cron. Any ideas?

#!/bin/bash
today=`date +%Y%m%d`
tcpdump -i eth0 -s 1500 -w ${today}.cap &
exit
# 2  
Old 07-20-2007
Any errors captured by cron? Which user did you use with cron? root?
# 3  
Old 07-21-2007
I ran cron as root. How do I read cron errors?
# 4  
Old 07-22-2007
Not sure about your exact version of cron or your configuration. I receive cron errors by mail in the root mailbox. So it's usually easy to tell what the problem is.
# 5  
Old 07-22-2007
Quote:
but fails to start in cron. Any ideas?
Is the cron aware of the absolute path of the bin tcpdump.

trying calling the bin tcpdump with absolute path
# 6  
Old 07-22-2007
I did give cron an absolute path....

In regards to your previous post, I have fcrontab, but I'm not sure of the version.
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