How to Add Files to Existing Git Repository

Adding a file to a repository on GitHub

Files that you add to a repository via a browser are limited to 25 MB per file. You can add larger files, up to 100 MB each, via the command line. For more information, see "Adding a file to a repository using the command line."

Tips:

• You can upload multiple files to GitHub at the same time.
• If a repository has any protected branches, you can't edit or upload files in the protected branch using GitHub. For more information, see "About protected branches."

You can use GitHub Desktop to move your changes to a new branch and commit them. For more information, see "Committing and reviewing changes to your project."

1. On GitHub.com, navigate to the main page of the repository.
2. Above the list of files, using the Add file drop-down, click Upload files.
3. Drag and drop the file or folder you'd like to upload to your repository onto the file tree.
4. At the bottom of the page, type a short, meaningful commit message that describes the change you made to the file. You can attribute the commit to more than one author in the commit message. For more information, see "Creating a commit with multiple co-authors."
5. Below the commit message fields, decide whether to add your commit to the current branch or to a new branch. If your current branch is the default branch, you should choose to create a new branch for your commit and then create a pull request. For more information, see "Creating a new pull request."
6. Click Commit changes.

Adding a file to a repository using the command line

You can upload an existing file to a repository on GitHub.com using the command line.

This procedure assumes you've already:

• Created a repository on GitHub, or have an existing repository owned by someone else you'd like to contribute to
• Cloned the repository locally on your computer

Warning: Never git add, commit, or push sensitive information to a remote repository. Sensitive information can include, but is not limited to:

• Passwords
• SSH keys
• AWS access keys
• API keys
• Credit card numbers
• PIN numbers

For more information, see "Removing sensitive data from a repository."

1. On your computer, move the file you'd like to upload to GitHub into the local directory that was created when you cloned the repository.
2. Open Terminal Terminal Git Bash.
3. Change the current working directory to your local repository.
4. Stage the file for commit to your local repository.

                 $ git add . # Adds the file to your local repository and stages it for commit. To unstage a file, use 'git reset HEAD                YOUR-FILE'.            

5. Commit the file that you've staged in your local repository.

                 $ git commit -m "Add existing file" # Commits the tracked changes and prepares them to be pushed to a remote repository. To remove this commit and modify the file, use 'git reset --soft HEAD~1' and commit and add the file again.            

6. Push the changes in your local repository to GitHub.com.

                 $ git push origin                your-branch                # Pushes the changes in your local repository up to the remote repository you specified as the origin            

Further reading

• "Adding an existing project to GitHub using the command line"

How to Add Files to Existing Git Repository

Source: https://docs.github.com/en/repositories/working-with-files/managing-files/adding-a-file-to-a-repository

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