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Top Forums UNIX for Dummies Questions & Answers help with a script Post 302425301 by Reboot on Thursday 27th of May 2010 02:55:36 PM
Old 05-27-2010
Quote:
Originally Posted by akabir77
Hi

I am trying to write a script that will email me if one of our other process is bumping into each other.

I just found this code... but not sure what its doing.

The script that runs the process is called batch_download_main.sh. This is run by a cron job.

the code i have:
Code:
#!/usr/bin/ksh
 
 
. ~/gateway/bin/gateway_env.sh
 
if [ `ps -elf | grep batch_download_x| grep -cv grep` = 0 ]
then
       rm -f $LOG_DIR/run_batch_output.log     
       nohup $EXEC_HOME/batch_output_x.sh > $LOG_DIR/run_batch_output.log 2>&1 & 
       echo 'Gateway output processing started.' 
else 
       echo 'Gateway output processing already running'; 
       echo ""Production Support please investigate"" | mailx -s ""The xxx backend Gateway application may be hung up."" -r akabir.naic 
 
fi

Can some one please explain what this is doing? the if condition is returning zero. so is this code is running another script?

Above script do following :

Code:
1) It starts execution using "K-shell".
2) Then it execut "~/gateway/bin/gateway_env.sh" file in the home directory of the user executing the script.
3) "~/gateway/bin/gateway_env.sh" file sets certain VARIABLES and their values.
4) Then the script execut "if-statment".
5) "If statment" serches wether script named "batch_download_x" is running or not.
6) If it doesn't find "batch_download_x" running then it removes the file "run_batch_output.log".And then starts "batch_output_x.sh " script.
7) And if it finds "batch_download_x" running then it just print the message "'Gateway output processing already running" and mail the content "Production Support please investigate" to akabir.naic (which I think is wrong e-mail ID). 

SmilieSmilie
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