Linux Process Management Cheat Sheet

Manage processes with ps, top, kill, and job control commands.

What this cheat sheet is for

This linux process management reference helps you complete common developer tasks quickly and avoid repeated trial-and-error when working under deadlines.

When you need a reliable command or pattern during debugging and incident response.
When you are implementing a feature and want a known-good syntax example immediately.
When onboarding teammates and documenting repeatable workflows for daily use.
When reviewing pull requests and verifying that command usage follows best practices.

List Processes

Show running processes.

ps
ps aux
ps auxf
ps -u username

Top - Live Monitor

Interactive process viewer.

top
htop

Kill Processes

Terminate processes.

kill PID
kill -9 PID
killall process_name
pkill -f pattern

Background Jobs

Job control commands.

command &
jobs
fg %1
bg %1
disown

Nohup

Run immune to hangups.

nohup command &

Nice Priority

Set process priority.

nice -n 10 command
renice -n 5 -p PID

Process Info

Detailed process information.

ps -p PID -o comm,pid,%cpu,%mem
pgrep process_name
pidof process_name

Common mistakes / Pitfalls

People often copy a command or pattern without adapting placeholders, which can break production workflows unexpectedly.
It is easy to forget environment-specific differences, so always verify behavior in your shell, runtime, or API gateway before shipping.
Many errors come from skipping small validation steps, so test with realistic sample input before relying on the result.

Last updated: February 2026