Linux Command Quick Reference: Essential Commands for Beginners

This Linux Command Cheat Sheet compiles daily core commonly used commands, categorized by functionality, to help beginners learn quickly. Basic operations include file and directory management: `ls` (list directories), `cd` (change directories), `pwd` (show current path), `mkdir/touch` (create directories/files), `cp/mv/rm` (copy/move/delete, with `rm` for irreversible deletion, use cautiously); system information viewing: `cat/head/tail` (view file content), `df/du` (check disk/directory sizes); process management: `ps/top` (monitor processes), `kill` (terminate processes); network commands: `ping` (test connectivity), `ip` (check configurations), `curl/wget` (download); software package management: `apt` (Debian/Ubuntu) and `yum` (CentOS/RHEL) for installation/update/uninstallation; user permissions: `sudo` (privilege escalation), `useradd` (create users). It is recommended to practice more, use `--help` or `man` for learning, and memorize commands in context to quickly form muscle memory.