Must-Know: Quick Reference for Linux Process Management Commands

This article introduces the core process management commands in the Linux system, helping beginners quickly solve daily problems. **Viewing Processes**: The `ps` command lists process statuses. A common usage is `ps -aux`, with key columns including PID (Process ID), USER (user), %CPU/%MEM (resource usage), STAT (status, e.g., R for running, S for sleeping), and COMMAND (start command). **Real-time Monitoring**: `top` dynamically updates process information. Press `P`/`M` to sort by CPU/memory usage, `k` to terminate a process, and `q` to exit. **Terminating Processes**: `kill` terminates processes by PID (e.g., `kill 1234`, use `-9` for forceful termination), and `killall` terminates by process name (e.g., `killall -9 firefox`). **Other Tools**: `pstree` displays process relationships in a tree structure. `jobs`/`bg`/`fg` manage background jobs (e.g., after pausing with `Ctrl+Z`, `bg %1` resumes background execution, and `fg %1` brings it back to the foreground). **Note for Beginners**: Avoid terminating