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bkreynolds48

asked on

Shell script works when executed from command line but not when using at or cron

I am adding to an existing backup to tape script to resolve an error that occurs about once a month.
If I execute this script from the command line it works fine but when using at or cron it does not work.
Here is a tail -20 of the logfile I am reading from the script
=======================================
/data6/CNSPROD/arch/arch_CNSPROD_1_49179.arc.Z
/data6/CNSPROD/arch/arch_CNSPROD_1_49181.arc.Z
/data6/CNSPROD/arch/arch_CNSPROD_1_49183.arc.Z
/data6/CNSPROD/arch/arch_CNSPROD_1_49184.arc.Z
/data6/CNSPROD/arch/arch_CNSPROD_1_49189.arc.Z
/data6/CNSPROD/arch/arch_CNSPROD_1_49187.arc.Z
/data6/CNSPROD/arch/arch_CNSPROD_1_49191.arc.Z
/data6/CNSPROD/arch/
/data6/CNSPROD/
/data6/
/data7/
/

save: /  92 GB 03:21:33    137 files
Unmounted device: /dev/rmt/0n
End: 12/11/06 16:26
Unloading tape...
Error 117: Drive comm
Moving tape from slot 82 to slot 12...
Error 18: Source inside drive
=======================================
here is the new part of the script.
I cut the end of the script out for testing.
=======================================
##################################################################
# set -xv
#!/bin/ksh
#
DBA1='bkreynolds48@yahoo.com';export DBA1
PATH=$PATH:/usr/bin:/usr/sbin/:/sbin:/bin:/usr/opt/networker/bin; export PATH
#
LOGFILE=/data7/nsr/logs/sunday_cold_backup.111206; export LOGFILE
LG=/data7/nsr/lg; export LG
TP=`date "+%m-%d-%y"`;export TP
#
##################################################################
#
if  [[ "`tail -1 $LOGFILE`" = "Error 18: Source inside drive " ]];
then
   tail -2 $LOGFILE | /usr/bin/mailx -s "Tape ERRORS" $DBA1                >$LG 2>&1
    /usr/bin/touch /data7/nsr/verified_TPerrors.$TP
        echo TPerrors                                                                           >>$LG 2>&1
    /usr/bin/mailx -s "this is a test" $DBA1  <$LG                                   >>$LG 2>&1
    /usr/bin/touch /data7/nsr/verified_2NDtry.$TP
        echo 2NDtry                                                                             >>$LG 2>&1
   tail -2 $LOGFILE | /usr/bin/mailx -s "Tape ERRORS" $DBA1                >>$LG 2>&1
    /usr/bin/touch /data7/nsr/verified_TPerrors.$TP
    /usr/bin/mailx -s "this is a test 2- RETRY" $DBA1        <$LG              >>$LG 2>&1
#
else
   tail -5 $LOGFILE | /usr/bin/mailx -s "Cold Backup " $DBA1                >>$LG 2>&1
        echo NOerror                                                                          >>$LG 2>&1
   /usr/bin/mailx -s "this is a test 3" $DBA1      <$LG                           >>$LG 2>&1
    /usr/bin/touch /data7/nsr/verified_backup.$TP
fi
#
#
####################### End of Script #################################
Avatar of amit_g
amit_g
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Use absolute path for every command. Even though you have set path in the script, you should use absolute paths. Do which commandname e.g. which date, which tail and use the path you get in the script.

Who is the owner of cron job? Does that user get an email when the cron job completes/fails?
Avatar of Tintin
Tintin
You haven't defined what "does not work" means.

Do you not get an email?
Are the wrong results sent?
Do you get any relevant error messages?
SOLUTION
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yuzh
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bkreynolds48

ASKER

What does not work from cron or at is that the script falls through to "NOerror" when it should see the tape error 18
I have tried using both "sh" and "ksh" shells

If you look at the script above you will see that I already have set -xv in it

Yuzh the is the output from the "tmp 2>&1" file
/data7/nsr/bk.test: [[: not found
ASKER CERTIFIED SOLUTION
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Tintin
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bpeterse
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Another point - albeit minor - is that when you're using Korn shell, you can export your variables directly, i.e.

DBA1='bkreynolds48@yahoo.com';export DBA1  

becomes

export DBA1='bkreynolds48@yahoo.com'

SOLUTION
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yuzh
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Avatar of bkreynolds48
bkreynolds48

ASKER

I put the set command after the
#!/bin/ksh
but still have the same results........
/data7/nsr/bk.test: [[: not found

Thanks
Bev
Avatar of bkreynolds48
bkreynolds48

ASKER

I changed
if  [[ "`tail -1 $LOGFILE`" = "Error 18: Source inside drive " ]];
to
if  [ "`tail -1 $LOGFILE`" = "Error 18: Source inside drive " ];

and it worked.

Thanks
Avatar of Tintin
Tintin
Did you ensure

#!/bin/ksh

was the *very* first line?

In your original code, you had

##############################

as the first line, so if you didn't remove that, that will explain why it was still running under /bin/sh