Shell Programming and Scripting

Hi

I my shell scripting(Main.ksh) i am calling the another loader.ksh using nohup inside the for loop ...so the above command runs parallel. Loader.ksh generate the dummy file seq_n.run file and deleted in the end of the Loader.ksh

In the main.ksh .. after the for loop .. i have to check the *.run file are not there in the while loop or while loop for 2 hr to come out ..

Could some one help to build the while loop.

Try to put this into psuedo code. From what your saying, I interpret your psuedo code to look something like the following:

Main.ksh

Code:

while <condition: filename "*.run" exists>
do
  <optional: do some processing here>
  for <variable> in <condition: ???>
  do
    <optional: do some processing here> 
    run loader.ksh
    <optional: do some processing here>
  done  # for loop
  <optional: do some processing here>
  wait 2 hours
done # while loop

I assume your "for loop" is so that you can run multiple loader.ksh files? I don't know the condition for such, that would be for you to determine.

Also, "nohup" will not run loader.ksh in parallel. It will allow loader.ksh to continue even if the Main.ksh process is killed. You need the ampersand (&) in order to make it so that the Main.ksh script does not wait for loader.ksh to finish, which would allow you to run multiple loader.ksh scripts. You can apply both if that is your desire,
i.e.

Code:

 
nohup ksh loader.ksh &

In the psuedo code, I'm just stating that you "run loader.ksh" so that the details can be worked out when more information is known. You should understand that these are separate conditions with different commands/modifiers (nohup and '&').