Day 12 - Linux and Git and github cheatsheet

Linux: Linux® is an open-source operating system (OS). An operating system is software that directly manages a system’s hardware and resources, like CPU, memory, and storage. The OS sits between applications and hardware and makes the connections between all of your software and the physical resources that do the work.

Linux commands:

1. ls - The most frequently used command in Linux to list directories

2. pwd - Print working directory command in Linux

3. cd - Linux command to navigate through directories

4. mkdir - Command used to create directories in Linux

5. mv - Move or rename files in Linux

6. cp - Similar usage as mv but for copying files in Linux

7. rm - Delete files or directories

8. touch - Create blank/empty files

9. cat - Display file contents on the terminal

10. clear - Clear the terminal display

11. echo - Print any text that follows the command

12. man - Access manual pages for all Linux commands

13. uname - Linux command to get basic information about the OS

14. whoami - Get the active username

15. tar - Command to extract and compress files in Linux

16. grep - Search for a string within an output

17. head - Return the specified number of lines from the top

18. tail - Return the specified number of lines from the bottom

19. diff - Find the difference between two files

20. cmp - Allows you to check if two files are identical

21. sort - Linux command to sort the content of a file while outputting

22. export - Export environment variables in Linux

23. zip - Zip files in Linux

24. unzip - Unzip files in Linux

25. ssh - Secure Shell command in Linux

26. service - Linux command to start and stop services

27. ps - Display active processes

28. kill and kill all - Kill active processes by process ID or name

29. df - Display disk filesystem information

30. mount - Mount file systems in Linux

31. chmod - Command to change file permissions

32. wget - Direct download files from the internet

33. sudo - Command to escalate privileges in Linux

34. cal - View a command-line calendar

35. top - View active processes live with their system usage

36. useradd and usermod - Add a new user or change existing users data

37. passwd - Create or update passwords for existing users

Git and GitHub:

Git is an open-source, version control tool created in 2005 by developers working on the Linux operating system.

GitHub is a company founded in 2008 that makes tools that integrate with git. You do not need GitHub to use git, but you cannot use GitHub without using git.

Git commands:

git init -- It is used for initializing a repository

git add file.js ---- it is used for staging a file

git status --- it is used to viewing the status

git commit -m "Message" -- It is used for committing the staged files

git rm file.js --- it is used to remove the file

git mv file1.js file1.txt --- It is used to move the files

git diff --- It is used to show the unstaged changes

git log --- to view full history

git log --online -- to get the summary

git config --global user. name ---- to give the user name

git config --global user.email --- to give the user mail

GitHub commands:

git clone [url] -- clone a remote git repository to your local machine

git fork --- Create a copy of a repository in your local machine

git remote add origin [url]: add a remote repository as the origin for the local repository.

git push -u origin [branch]: Push the local branch to the remote repository.

git pull-request: Create a pull request to suggest changes to a repository.

Thanks for reading,

Mohammed Muqafamuddin