nice

Run a command with a lower priority

low risk

interactive breakdown — edit the command and press Explain
$ 
⚠ Risks & cautions
What it does

Adjusts niceness (−20 high priority to 19 low).

Common flags
FlagMeaning
-nNiceness increment
Examples
nice -n 10 tar -czf backup.tgz /dataRun a backup at low priority · explain & risk-check →
Related
renice ionice
Open the full explainer →More in System & Processes

Reference text is hand-written and may be incomplete — check man nice for your version. Test destructive commands on a non-production system first.