Hi am new to unix ,
when the background task is running how to put entry in the table and also if there is any issue how to stop the running task.
can anyone help me...
How new can you be when you've been a member for over a year and this is your 60th post?
That aside, your question is too vague for any useful feedback.
If you are talking about shell scripting, you can "remember" a background job by saving the value of $! .
To stop it, use kill .
As to how to detect an "issue", you have provided insufficient information.
Regards,
Alister