Hi All,
I am new to unix , Please help me regarding the below issue . my application's main pragram in "a.sh" and one upstream application sending a file daily via connect direct and then calling the script "a.sh" . But the condition in our apll. is no two thread can't run at a time. so there is a validation in "a.sh" but some times it showing the error "one thread running" but when i checked with ps-ef command..then it not satisfying the below condition .

Below is the code :



Please help me .
Thanks in advance

Julirani,

I am not sure of the application process, but there is a possibility that there will be multiple instances of a.sh running , but the time u manually check it , the execution of script might be over.

Check in the remaining part of the script any infinite loops or conditions exist?..

HI Panyam,
Thanks for your reply . Actually , it is strange , when i doing the grep using the below command
command:
ps -ef | grep "/appl/a.sh" | grep -v "grep"
output :
user 20169 20168 0 06:00:13 ? /bin/ksh /appl/a.sh
user 20168 1 0 06:00:13 ? 0:00 sh -c /appl/a.sh


But when i print the value of the var for the below command it showing diffrent .

command:
PROCESS=`ps -ef | grep "/appl/a.sh" | grep -v "grep" | wc -l`
echo $PROCESS

output :
4


But the output always not the same .some thimes it showing the correct value i.e 2 .



So i am unable to find the root cause . Is it any problem with the OS ?
Could you please help me regarding this.


Thanks in advance .

Hi julirani,

I am sure there will be no problem with the OS. Make sure that only one instance of the script "a.sh" is runnning . Your command returnning value 4 since it might found multiple instances of the same.Of course you may not be the one who is running the script once again . Ther might be others in the server who is running.