# 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}}`
