Git is a powerful version control system that’s essential for managing code and configuration files, especially in collaborative environments. For Linux system administrators, Git can be invaluable for tracking changes to system configurations, scripts, and other critical files.

Basic Git command for system administrator

1. Initialization: Create a new Git repository:
   Bash command
   git init
2. Cloning: Get a copy of an existing repository:
   Bash command
   git clone
3. Staging: Add changes to the staging area:
   Bash command
   git add
4. Committing: Save changes to the repository:
   Bash command
   git commit -m “Commit message”
5. Pushing: Send changes to a remote repository:
   Bash command
   git push
6. Pulling: Get updates from a remote repository:
   Bash command
   git pull

Example: Tracking Configuration Changes
Let’s say you want to track changes to your /etc/ssh/sshd_config file.

1. Initialize a repository:
   Bash
   cd /etc/ssh
   git init
2. Add the file:
   Bash
   git add sshd_config
3. Commit the initial state:

Bash
git commit -m “Initial sshd_config”

4. Make changes: Edit the sshd_config file as needed.
5. Commit the changes:
   Bash
   git commit -m “Changed PortNumber to 2222”
6. Push to a remote repository:
   Bash
   git remote add origin
   git push origin master
   Best Practices for System Administrators

• Create separate repositories: For different projects or configurations to keep things
  organized.
• Use meaningful commit messages: Describe the changes clearly for future
  reference.
• Branching: Use branches for different features or bug fixes to isolate changes.
• Reviewing: Have others review your changes before merging them into the main
  branch.
• Backup: Always have a backup of your repository in case of accidental deletion or
  corruption.
  By following these guidelines, you can effectively use Git to manage your Linux
  system configurations and collaborate with other administrators.

REF : Gemini

Linux Basic to Linux system administration class

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