https://github.com/kausalyanp/linux-cheat-sheet

This Cheat Sheet coontains most commnly and very uncommonly used linux commands.
https://github.com/kausalyanp/linux-cheat-sheet

cheat cheat-sheet cheatsheet cheatsheets commands commands-cheatsheet linux linuxcommand linuxcommands

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This Cheat Sheet coontains most commnly and very uncommonly used linux commands.

• Host: GitHub
• URL: https://github.com/kausalyanp/linux-cheat-sheet
• Owner: kausalyanp
• Created: 2024-12-02T06:42:57.000Z (over 1 year ago)
• Default Branch: main
• Last Pushed: 2024-12-02T07:35:12.000Z (over 1 year ago)
• Last Synced: 2025-02-03T20:50:29.958Z (about 1 year ago)
• Topics: cheat, cheat-sheet, cheatsheet, cheatsheets, commands, commands-cheatsheet, linux, linuxcommand, linuxcommands
• Homepage:
• Size: 19.5 KB
• Stars: 1
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
# linux-cheat-sheet

This Cheat Sheet coontains most commnly and very uncommonly used linux commands.



## Table of Contents:

1. [File and Directory Management](#1-file-and-directory-management)

2. [File Content Manipulation](#2-file-content-manipulation)

3. [File Permissions](#3-file-permissions)

4. [System Monitoring](#4-system-monitoring)

5. [Network Commands](#5-network-commands)

6. [Process Management](#6-process-management)

7. [Archiving and Compression](#7-archiving-and-compression)

8. [User Management](#8-user-management)

9. [Package Management (Debian/Ubuntu)](#9-package-management-debianubuntu)

10. [Others](#10-others)

## 1. File and Directory Management

* ls: Lists files and directories.

  - Example: ls -l (detailed list view)

    

* cd: Changes the current directory.

  - Example: cd /home/user

    

* pwd: Displays the current working directory.

  - Example: pwd

* mkdir: Creates a new directory.

  - Example: mkdir new_folder

* rmdir: Removes empty directories.

  - Example: rmdir old_folder

* rm: Deletes files or directories.

  - Example: rm file.txt, rm -r folder (recursive delete)

* cp: Copies files or directories.

  - Example: cp file1.txt file2.txt

* mv: Moves or renames files or directories.

  - Example: mv file1.txt new_file.txt

* touch: Creates a new empty file.

  - Example: touch newfile.txt

* find: Searches for files and directories.

  - Example: find / -name file.txt

* locate: Finds files and directories quickly using a database.

  - Example: locate file.txt

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## 2. File Content Manipulation

* cat: Displays the content of a file.

    - Example: cat file.txt

      

* tac: Displays the content of a file in reverse.

    - Example: tac file.txt

      

* less: Opens a file for viewing (scrollable).

    - Example: less file.txt

*  more: Views file content (less advanced than less).

    - Example: more file.txt

* head: Displays the first few lines of a file.

    - Example: head -n 10 file.txt

* tail: Displays the last few lines of a file.

    - Example: tail -n 10 file.txt

* nano: Opens a file in a simple text editor.

    - Example: nano file.txt

* vim: Opens a file in the Vim text editor.

    - Example: vim file.txt

* wc: Counts words, lines, and characters in a file.

    - Example: wc file.txt

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## 3. File Permissions

* chmod: Changes file or directory permissions.

    - Example: chmod 755 file.txt

      

* chown: Changes file ownership.

    - Example: chown user:group file.txt

      

* chgrp: Changes group ownership of a file.

    - Example: chgrp group file.txt

* umask: Sets default permissions for new files and directories.

    - Example: umask 022

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## 4. System Monitoring

* top: Displays real-time processes and resource usage.

* htop: An interactive version of top (needs to be installed).

*  ps: Lists running processes.

    - Example: ps aux

* df: Shows disk space usage.

    - Example: df -h

* du: Displays disk usage of a directory or file.

    - Example: du -h folder

* free: Displays memory usage.

    - Example: free -h

* uptime: Shows system uptime.

    - Example: uptime

* who: Displays logged-in users.

    - Example: who

* w: Shows who is logged in and what they are doing.

    - Example: w

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## 5. Network Commands

* ping: Tests network connectivity to a host.

    - Example: ping google.com

      

* ifconfig: Displays or configures network interfaces.

    - Example: ifconfig eth0

  

* ip: Configures network interfaces and routing (modern replacement for ifconfig).

    - Example: ip addr

* netstat: Displays network connections and statistics.

    - Example: netstat -tuln

* ss: Displays detailed network statistics (faster than netstat).

    - Example: ss -tuln

* wget: Downloads files from the internet.

    - Example: wget http://example.com/file.txt

* curl: Transfers data from a URL.

    - Example: curl http://example.com

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## 6. Process Management

* kill: Terminates a process using its PID.

    - Example: kill 1234

      

* killall: Terminates all processes with a specific name.

    - Example: killall firefox

* jobs: Lists background jobs.

    - Example: jobs

* fg: Brings a background job to the foreground.

    - Example: fg %1

* bg: Resumes a background job.

    - Example: bg %1

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## 7. Archiving and Compression

* tar: Archives files into a tarball.

    - Example: tar -cvf archive.tar files/

      

* gzip: Compresses files using the gzip algorithm.

    - Example: gzip file.txt

* gunzip: Decompresses gzip files.

    - Example: gunzip file.txt.gz

* zip: Compresses files into a zip archive.

    - Example: zip archive.zip file.txt

* unzip: Extracts files from a zip archive.

    - Example: unzip archive.zip

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## 8. User Management

* whoami: Displays the current logged-in user.

    - Example: whoami

      

* id: Displays user ID, group ID, and other information.

    - Example: id

* adduser: Adds a new user.

    - Example: sudo adduser username

* passwd: Changes the password for a user.

    - Example: passwd

* usermod: Modifies a user account.

    - Example: usermod -aG groupname username

* deluser: Deletes a user account.

    - Example: sudo deluser username

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## 9. Package Management (Debian/Ubuntu)

* apt-get: Installs, upgrades, or removes packages.

    - Example: sudo apt-get install package-name

      

* apt: A user-friendly alternative to apt-get.

    - Example: sudo apt install package-name

* dpkg: Installs or removes .deb packages.

    - Example: sudo dpkg -i package.deb

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## 10. Others

* echo: Displays text.

    - Example: echo "Hello, World!"

      

* date: Shows or sets the system date and time.

    - Example: date

* cal: Displays a calendar.

    - Example: cal

* shutdown: Shuts down the system.

    - Example: sudo shutdown now

* reboot: Reboots the system.

    - Example: sudo reboot

* alias: Creates a shortcut for a command.

    - Example: alias ll='ls -l'

* clear: Clears the terminal screen.

    - Example: clear

[Back to Top](#top)

This repo is created by Kausalya N P

>> Users can copy this for educational purpose.