htop

Interactive process viewer

medium risk

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

Colourful top replacement with tree view, search and kill. F5 tree, F6 sort, F9 kill, F4 filter.

Common flags
FlagMeaning
-uShow one user
-pShow specific PIDs
-dRefresh delay (tenths of a second)
Examples
htop -u www-dataProcesses of one user · explain & risk-check →
htop -p 1234,5678Watch specific PIDs · explain & risk-check →
Related
top ps kill
Open the full explainer →More in System & Processes

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