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Shell Script for continuously checking status of a another script running in background, and immedia

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# 8  
Old 11-04-2013
Hi Jim,

As you suggested I was tried to find out solution for exiting script running in background but this time script run for two continuous days and then its suddenly stops even I checked with nohup.out for cause I found nothing. Could you please tell me how should i come to know what is the exact cause behind this…please find below code I am using within script.
Code:
#!/bin/bash
o=$IFS
IFS=$(echo -en "\n\b")
#date1=`date +'%Y-%m-%d'`
tail -n -0 -F /home/ketan/logs/KETAN-COMMON-ERROR.log | while read myline; do
        ERROR_CODE=$(echo $myline | awk -F ' ' '{for (i=1;i<=NF;i++){if($i ~ "^[1-1]" && length($i)==6){print $i}}}')
        ERROR_CODE_DET=$(echo $myline | awk -F ' ' '{print $1" "$2}')
if [ -n "$ERROR_CODE" ] ; then
                        echo $ERROR_CODE_DET
                        while IFS='|' read -r code disc; do
                        if [ "$ERROR_CODE" -eq "$code" ] ; then
                                echo "sudo snmptrap is triggered with ERROR CODE : $code and ERROR MSG : $disc"
                        fi
                        done < ERROR_CODES.txt
fi
done
IFS=$o



ERROR_CODES.txt contain list of error code and discription saparated by "|
"
120011|Route failed.
Regards,
ketanr
# 9  
Old 11-04-2013
Looks like your tail -F command stops after two days. As you are using bash, you may want to examine the PIPESTATUS array in the script to see what went wrong, or check what happened to the ...ERROR.log file
# 10  
Old 11-13-2013
Hi RudiC,

As suggested I found that input ...ERROR.log file is only get appended when there are logs for specific process is generated else it will remain idle unresponsive for long amount of time, is this a reason why my script getting exited if it’s not received any input from ERROR.log file for long time duration? If yes then could please explain me what is ideal time Linux system keeps process running in background idle and terminate when time exited? ....please help...
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