01-04-2014
Script fails to run properly when run from CRONTAB
Hello all,
I'm trying to write a script to gather and send data and it works just fine at the bash command line, but when executing from CRON, it does not run properly.
My scripting skills are pretty limited and there's probably a better way, but as I said it works at the command line, but not from cron. Through troubleshooting I have found that this line
#Execute the 'report' portion of nbdeployutil and send output to a file.
/bin/echo `$mail_report` > /tmp/nbdeployutil_temp_rpt.out
isn't actually executing the $mail_report variable (which is just a string of text) and updating a temp file, so the rest of the script doesn't work. Any thoughts on why this isn't working through cron? I've checked the environment and it seems ok. I even tried to have cron run it with bash -c "scriptname.sh" and behavior did not change.
This is on a solaris 10 system, but I am also running the same script on SuSe 11 and it is behaving in exactly the same way.
Thanks for the help.
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CRON(8) System Manager's Manual CRON(8)
NAME
cron - daemon to execute scheduled commands (Vixie Cron)
SYNOPSIS
cron
DESCRIPTION
Cron should be started from /etc/rc or /etc/rc.local. It will return immediately, so you don't need to start it with '&'.
Cron searches /var/spool/cron for crontab files which are named after accounts in /etc/passwd; crontabs found are loaded into memory. Cron
also searches for /etc/crontab and the files in the /etc/cron.d/ directory, which are in a different format (see crontab(5)). Cron then
wakes up every minute, examining all stored crontabs, checking each command to see if it should be run in the current minute. When execut-
ing 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).
Additionally, cron checks each minute to see if its spool directory's modtime (or the modtime on /etc/crontab) has changed, and if it has,
cron will then examine the modtime on all crontabs and reload those which have changed. Thus cron need not be restarted whenever a crontab
file is modified. Note that the Crontab(1) command updates the modtime of the spool directory whenever it changes a crontab.
SEE ALSO
crontab(1), crontab(5)
AUTHOR
Paul Vixie <paul@vix.com>
4th Berkeley Distribution 20 December 1993 CRON(8)