Shell Script not Running from Crontab

venkatramanj · 01-11-2010, 06:41 PM

Hi All,

I have a shell script which is configured for the user. The main task of the shell script is to email certain user with a particular result.

The shell script runs perfectly when run from a Konsole terminal and configured through a crontab generates empty entries.

Below is my crontab for my user.

Code:

# DO NOT EDIT THIS FILE - edit the master and reinstall.
# (/tmp/crontab.XXXXSyNyp1 installed on Wed Jan  6 09:14:14 2010)
# (Cron version V5.0 -- $Id: crontab.c,v 1.12 2004/01/23 18:56:42 vixie Exp $)
#!/bin/bash
#
# Minute (0-59), Hour (0-23), Day (1-31), Month (1-12), Day of Week (0-7)
#
*/5 * * * *     /home/bldteam/bin/vmail_summary_findbugs.sh

vmail_summary_findbugs.sh

Code:

#!/bin/bash

FRAMEWORK=`cat ~/public_html/checkstyle/results/psw/projects/core.framework/reports/find_bugs.txt | parse_find_bugs`
COMPONENTS=`cat ~/public_html/checkstyle/results/psw/projects/core.components/reports/find_bugs.txt | parse_find_bugs`
PSW=`cat ~/public_html/checkstyle/results/psw/projects/psw/reports/find_bugs.txt | parse_find_bugs`
HDAV=`cat ~/public_html/checkstyle/results/hdav/projects/hdav/reports/find_bugs.txt | parse_find_bugs`

echo "Report taken from:  http://tcl00012/checkstyle/

===== Core Framework =====

$FRAMEWORK

===== Core Components =====

$COMPONENTS

===== PSW =====

$PSW

===== HDAV =====

$HDAV" | 

mail -s "[ALERT] Venue Software FindBugs Summary by Class" vjayara9@rockwellcollins.com

bradvan · 01-12-2010, 09:25 AM

You are not mailing anything. It looks like you are just displaying to standard output. You need to redirect those to a log and then mail the log file.

colucix · 01-12-2010, 02:18 PM

You have to use the full path for "parse_find_bugs" otherwise the cron daemon cannot find it. Take in mind that cron has a very limited environment and the PATH is usually /bin:/usr/bin. For this reason - as a general rule - it's better to use the full path of each command inside the scripts you run from crontab.

@bradvan: maybe you missed the last line of the script, where all the output from echo is piped to mail.

bradvan · 01-13-2010, 05:15 AM

I did miss it!

But I agree about full paths. I usually define a variable giving the complete path to the command and then use that throughout my script. It also makes it easier when supporting more than one OS. For example:

Code:

if [ `uname -s` = "Linux" ]; then
   SED=/bin/sed
else
   SED=/usr/bin/sed
fi