Question: Modify JobShell so that job information is maintained in the registry rather than in a temporary file. Enhance the function (Program 65) so that it

Modify JobShell so that job information is maintained in the registry rather than in a temporary file. Enhance the function (Program 65) so that it reports the exit code of any completed job. Also, give the times (elapsed, kernel, and user) used so far by all jobs.

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