Use kill When
You know the exact PID and want precise targeting.
You want explicit control over which process receives the signal.
Compare
kill vs pkill
How to choose between signaling a known PID and matching processes by name or pattern.
`kill` targets processes by PID. `pkill` targets processes by name or pattern, which is often faster interactively but easier to aim too broadly if you are careless.
Use pkill When
You want to signal processes by name or pattern during ad hoc troubleshooting.
You are handling several related processes that share a clear identifier.
Rule of Thumb
kill is precise by PID. pkill is faster by pattern.
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