renice

Alters the scheduling priority/nicenesses of one or more running processes.

Niceness values range from -20 (most favorable to the process) to 19 (least favorable to the process).

• Change priority of a running process:

renice -n {niceness_value} -p {pid}

• Change priority of all processes owned by a user:

renice -n {niceness_value} -u {user}

• Change priority of all processes that belong to a process group:

renice -n {niceness_value} --pgrp {process_group}

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