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.
Read MoreLinux Command Complete Reference: A Must-Have Handbook for Beginners
This article introduces the basics of Linux commands and commonly used tools, covering core operations and beginner tips. The basic command format is "command [options] [arguments]". Essential beginner tips include: using --help or man for help, Tab completion, Ctrl+C to interrupt, Ctrl+L to clear the screen, and ↑/↓/Ctrl+R to manage history commands. Core operations: Use ls (-l/-a/-h) to view files and directories, cd to switch directories (relative/absolute paths and ~/. ..), touch/mkdir to create files/directories, and cp/mv/rm to copy, move, and delete (be cautious with rm). For system information, use uname -a, uptime, df -h/free -h, and ps/top to manage processes. For text processing, use cat/head/tail to view files and grep -r to search for text. Software package management is divided into Ubuntu (apt) and CentOS (yum), requiring sudo for privilege elevation. Beginner pitfalls: Pay attention to permissions (sudo), avoid dangerous commands (e.g., rm -rf *), and practice basic commands (ls, cd, etc.) to quickly master daily operations.
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