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Full Discussion: Help with shell script handling processes
Top Forums Shell Programming and Scripting Help with shell script handling processes Post 302966309 by JackyShane_36 on Wednesday 10th of February 2016 03:44:07 PM
Old 02-10-2016
Linux Help with shell script handling processes
Hello

I have a file which has around 120 lines of commands.

I am trying to write a shell script like which reads the 'command' file and executes line by line with some additional (common argument) with maximum 6 commands active at a time. Each of these commands when executed takes time which is variable and cannot be implemented within the script.

Attached both the command_file and shell script which I am executing like below,
Code:
bash: $ nohup ./program01.sh > /usr/local/app/output.log &

Expected outcome, in the /usr/local/app/output.log is as below:

Code:
Running command for Documentation with name starting with A....
Running command for Documentation with name starting with B....
Running command for Documentation with name starting with C....
Running command for Documentation with name starting with D....
Running command for Documentation with name starting with E....
Running command for Documentation with name starting with F....
Running command for Documentation with name starting with G....
No of running is 7...waiting
Running command for Documentation with name starting with H....
No of running is 7...waiting
Running command for Documentation with name starting with I....
No of running is 7...waiting
Running command for Documentation with name starting with J....
No of running is 7...waiting
Running command for Documentation with name starting with K....
No of running is 7...waiting

The outcome I see, in the /usr/local/app/output.log is as below:

Code:
Running command for Documentation with name starting with A....
Running command for Documentation with name starting with B....
Running command for Documentation with name starting with C....
Running command for Documentation with name starting with D....
Running command for Documentation with name starting with E....
Running command for Documentation with name starting with F....
Running command for Documentation with name starting with G....
Running command for Documentation with name starting with H....
Running command for Documentation with name starting with I....
No of running is 7...waiting
No of running is 7...waiting
Running command for Documentation with name starting with M....
Running command for Documentation with name starting with N....
Running command for Documentation with name starting with O....


It is skipping J & K and starting to execute M, N, O and so on. How do I make the program to wait before all the previous lines from the command_file are executed and only then proceed to next line.

May be it's a simple trick, I am missing out. I am not a shell expert. Your help is highly welcomed.

Regards
JS
program_01.sh (688 Bytes) 
output.txt (2.1 KB) 
command_file.txt (14.9 KB) 
Last edited by Don Cragun; 02-11-2016 at 02:17 AM.. Reason: Add CODE and ICODE tags.
 

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