# 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 belongs to a group. `renice -n {{niceness_value}} -g {{group}}`