#90DaysOfDevOps Challenge - Day 12 - Linux & Git Wrap Up

#90DaysOfDevOps Challenge - Day 12 - Linux & Git Wrap Up


3 min read

Welcome to Day 12 of the #90DaysOfDevOps challenge. I'm happy to share my cheat-sheet summarizing all the essential commands and concepts I've learned during our Linux and Git/GitHub hands-on sessions.

๐Ÿ“„ Linux & Git Cheat-Sheet ๐Ÿš€

๐Ÿง Linux Cheat-Sheet:


  • cd [directory]: Change your current directory to the specified directory.

  • ls: Display a list of files and directories in the current directory.

  • pwd: Print the absolute path of the current working directory.

  • mkdir [directory]: Create a new directory with the specified name.

  • rm [file]: Delete the specified file.

  • rm -r [directory]: Remove the specified directory and its contents recursively.

File Operations:

  • touch [file]: Create a new file with the specified name.

  • cat [file]: Display the contents of the specified file.

  • cp [source] [destination]: Copy the file from the source location to the destination location.

  • mv [source] [destination]: Move or rename the file from the source location to the destination location.

  • chmod [permissions] [file]: Change the permissions of the specified file.

User Management:

  • sudo [command]: Execute the specified command with superuser privileges.

  • useradd [username]: Create a new user with the specified username.

  • passwd [username]: Set a password for the specified user.

  • su [username]: Switch to the specified user.

  • userdel [username]: Delete the specified user.

Process Management:

  • ps: Display a snapshot of the current running processes.

  • top: Monitor the real-time system resources and running processes.

  • kill [pid]: Terminate a process with the specified process ID.


  • ping [host]: Send ICMP Echo Request packets to the specified host to check network connectivity.

  • ifconfig: Display information about the network interfaces on your system.

  • netstat: Display network connections, routing tables, and network interface statistics.

๐Ÿ™ Git-GitHub Cheat-Sheet:

Repository Management:

  • git init: Initialize a new Git repository in the current directory.

  • git clone [repository]: Clone the specified repository from GitHub to your local machine.

  • git add [file]: Add the specified file to the staging area for the next commit.

  • git commit -m "[message]": Commit the staged changes with a descriptive message.

  • git push: Push the committed changes to a remote repository.

  • git pull: Fetch and merge the latest changes from a remote repository.

Branching and Merging:

  • git branch: List all the branches in the repository.

  • git branch [branch]: Create a new branch with the specified name.

  • git checkout [branch]: Switch to the specified branch.

  • git merge [branch]: Merge the changes from the specified branch into the current branch.


  • git remote add [name] [url]: Add a remote repository with the specified name and URL.

  • git fetch [remote]: Fetch the latest changes from the specified remote repository.

  • git pull [remote] [branch]: Pull the latest changes from the remote branch and merge them into the current branch.

  • git push [remote] [branch]: Push the local commits to the remote branch.

Feel free to use this cheat-sheet as a quick reference during your DevOps journey. Let it serve as a reminder of the powerful commands and concepts we've learned.

As we wrap up the Linux and Git/GitHub section, it's time to gear up for Day 13, where we'll embark on a new journey into the world of Python. Get ready for new learnings, challenges, and discoveries. Stay tuned!

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