How to Ignore Files in Git with .gitignore

In almost any project, there are files and folders that you don't want to include in version control. These can be dependency folders like /node_modules, log files, or system-specific files like .DS_Store.

The .gitignore file is Git's way of letting you specify what to ignore!

Using a .gitignore File

To start ignoring files, you first need to create a file named .gitignore in the root directory of your project.

Inside this file, you can list the files and directories you want Git to ignore, with one pattern per line.

Here are some common examples:

# Ignore a specific file
my-secret-file.txt

# Ignore all files with a certain extension
*.log

# Ignore a whole directory
/node_modules

# You can also add exceptions with the "!" operator
# This ignores the /config directory, but NOT the keep_me.yml file inside it
/config/*
!/config/keep_me.yml

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Ignoring a File That is Already Tracked

If you've already committed a file by mistake, simply adding its path to .gitignore won't be enough. Git will continue to track it because it's already in the repository's index.

You first need to tell Git to stop tracking the file by using the git rm --cached command:

$ git rm --cached my-temp-file.txt

This command removes the file from Git's tracking but keeps the actual file in your local directory. After running this command, you can add the file's path to your .gitignore file, and Git will ignore it from now on.

Tip

Ignoring Files in Tower

In the Tower Git client, you can simply right-click any untracked file in the Working Copy list and choose "Ignore". Tower will then add the file to your ".gitignore" file for you.

You can also find templates for ".gitignore" files for almost any programming language by visiting the free .gitignore generator on the Tower website.

Learn More

• Check out the chapter on Ignoring Files in our free online book