How to use global gitignore?

To use a global .gitignore file in Git, follow these steps:

Step 1: Create a Global .gitignore File

1. Open your terminal.

2. Create a new file for your global .gitignore. You can name it anything you like, but a common name is .gitignore_global. For example:

   touch ~/.gitignore_global

Step 2: Configure Git to Use the Global .gitignore

1. Set the global .gitignore file in your Git configuration:

   git config --global core.excludesfile ~/.gitignore_global

Step 3: Add Patterns to the Global .gitignore

1. Open the global .gitignore file in a text editor:

   nano ~/.gitignore_global

   (You can use any text editor you prefer, such as vim, nano, or a graphical editor.)

2. Add the patterns for files and directories you want to ignore globally. For example:

   # Ignore all log files
   *.log
   
   # Ignore OS-specific files
   .DS_Store
   Thumbs.db
   
   # Ignore IDE-specific files
   .idea/
   *.sublime-workspace

3. Save and close the file.

Step 4: Verify the Global .gitignore

1. You can check your Git configuration to ensure the global .gitignore is set up correctly:

   git config --global --get core.excludesfile

   This should return the path to your global .gitignore file.

Step 5: Check Git Status

1. Now, when you run git status in any repository, Git will ignore the files and patterns specified in your global .gitignore.

Summary

Using a global .gitignore file is a convenient way to ignore files that are common across multiple projects, such as OS-specific files or IDE configurations. This helps keep your repositories clean and focused on the relevant files.