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Shell script doesn't work as cron job

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Shell script doesn't work as cron job BSD Help forum discussing all BSD based operating systems including FreeBSD, OpenBSD, NetBSD, and more. BSD refers to the distribution of UNIX originally developed by the University of California at Berkeley.

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  #1  
Old June 29th, 2006, 12:44 PM
namotco namotco is offline
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Shell script doesn't work as cron job
This code works correctly when executed from the command line, but when I have this entry in my crontab file the output is an empty bz2 file.

cron tab:
Code:
@daily /usr/home/wha/scripts/rperry_wha_bkup.sh



shell script:
Code:
#!/bin/sh
# Script name : auto_mysql_dump.sh
# Backup the dbname database
dir=`date +%Y-%m-%d`
dbname='rperry_wha'
if [ -d /home/wha/backup ]; then
mkdir /home/wha/backup/$dir
mysqldump -B --user=rperryFile --password=somepassword --host=127.0.0.1 $dbname | bzip2 -c > /home/wha/backup/$dir/$dbname.sql.bz2
fi
# End of script auto_mysql_dump.sh
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  #2  
Old June 29th, 2006, 03:18 PM
M.Hirsch M.Hirsch is offline
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Use absolute path names.

Cron has got a different environment setup than your shell. The problem is most likely the PATH variable.

M.
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  #3  
Old June 29th, 2006, 03:29 PM
tj_nt tj_nt is offline
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this may not apply...so FWIW...

If you used a 'Windows' (or other non-nix) system to compose the shell script and then uploaded it to the server there is a possibility that there are hidden characters that get ignored when the script is run from bash but cron see it as a corrupted file...
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Old June 29th, 2006, 03:36 PM
namotco namotco is offline
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Hmm, I tried to be careful with the path names, but maybe mysqldump is the issue. I'll use a full path on it and see what happens.

Thanks.
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Old June 29th, 2006, 04:13 PM
M.Hirsch M.Hirsch is offline
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Yes, that's what I meant.
The "PATH" variable is the search path for binaries.
It does not include /usr/local/bin by default. You can change this, but I prefer to use absolute paths still.

M.
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