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.
📄 Linux & Git Cheat-Sheet 🚀
🐧 Linux Cheat-Sheet:
Navigation:
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.
Networking:
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.
🐙 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.
Collaboration:
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!