Master Linux Command Line Basics: From Navigation to File Management

Linux Cultivation Manual – Foundations

Chapter 1: The Awakening of the Spiritual Root – Overview of Linux Practices

凝气成符 : Understand the rune construction of Linux commands.

玄机问天 : Learn help and manual commands (help, man).

乾坤挪移 : Master file and directory manipulation (cp, rm, mv).

神识探查 : Inspect file contents (cat, grep).

时光回溯 : Master document backup and restoration (tar, gzip).

虚空造物 : Grasp the three realms of the vi editor (command, insert, last‑line mode).

Chapter 2: The Nine Foundations – Initial Command Exploration

First Level: Core Spell (Linux Command Classification)

内门心法（内部命令） : Built‑in shell commands like pwd, cd, natural as breathing.

外门神通（外部命令） : External binaries in /bin, /usr/bin such as ls and vim.

Second Level: Rune Sealing (Command Syntax)

Spell: command [options] [arguments] 命符核心（命令字） : The command name, e.g., ls, cp, must be exact.

灵纹加持（选项） : Short options like -l or long options like --help.

祭品献阵（参数） : Specify targets, e.g., /home/仙府.

Secret Techniques

Tab

: Auto‑completion. Ctrl+C: Interrupt the current command. Ctrl+L: Clear the terminal.

Chapter 3: The Realm of Heaven – Directory and File Practice

First Realm: Observing the Sky (Viewing Directories)

pwd

: Show current directory. cd: Change directory instantly.

Absolute paths start from /, e.g., /灵山/藏经阁. Relative paths use the current location, e.g., ../丹药房. ls -l: List files with permissions, size, timestamps. du -sh: Show directory size.

Second Realm: Creation Art (Creating Directories and Files)

mkdir -p /秘境/灵泉/药田

: Create nested directories. touch: Create an empty file. ln -s 灵剑 -> 上古神兵: Create a symbolic link.

Third Realm: Great Translocation (Copy, Delete, Move)

cp -r

: Recursively copy directories. rm -rf: Force delete (use with caution). mv: Rename or move files.

Fourth Realm: Divine Insight (Search Commands)

which

: Locate command path, e.g., which ls → /usr/bin/ls. find /灵库 -name "*.秘籍" -size +10M: Find files matching criteria.

Chapter 4: The Record of Heaven – File Content Comprehension

Skill One: External Vision (Viewing Files)

cat

: Display small files. more/less: Paginated view, press q to quit. head -n 5: Show first five lines. tail -f: Follow file updates in real time.

Skill Two: Refining Spirit (Statistics and Search)

wc -l /仙籍/弟子名册

: Count lines. grep "灵石": Filter lines containing “灵石”; use -v to invert.

Chapter 5: Time – Backup and Restoration

Temporal Magic (tar + gzip/bzip2)

Compress archive: tar -zcvf 灵库备份.tar.gz /灵库 (gzip) or tar -jcvf 丹方备份.tar.bz2 /丹房 (bzip2).

Extract archive: tar -zxvf 灵库备份.tar.gz -C /新洞天.

Chapter 6: Void Creation – vi Editor Three‑Realm Method

Three Realms (Modes)

Command mode (default): dd delete line, yy yank line, p paste, /天道 search.

Insert mode (press i to enter): type freely, Esc return to command mode.

Last‑line mode (press : to enter): :wq write and quit, :%s/旧咒/新咒/g replace throughout.

Chapter 7: Ascension Insights

Linux practice rewards diligent command usage and manual consultation ( man, --help). Mastering vi becomes a forge for countless configurations, enabling you to manage servers, establish your own domain, and achieve operational mastery.