To configure Git to use nano as the default text editor, you need to update the Git configuration. In particular, you need to set the `core.editor` configuration to nano. You can do this either for just your user or for the entire system: 1. **For your user only:** Run the following command in your terminal: ```bash git config --global core.editor "nano" ``` This will set nano as the default editor for your user's Git operations. The `--global` flag modifies the global `.gitconfig` file located in your home directory (`~/.gitconfig`), applying these settings to all repositories your user works with. 2. **For the entire system:** If you wish to set nano as the default editor for all users on your system, you can use the `--system` flag: ```bash git config --system core.editor "nano" ``` This requires administrative permissions, as it changes the system-wide git configuration file. Once you’ve run the appropriate command, Git will use nano as the default editor for actions such as commit message editing, rebase operations, etc. If you're not able to undo some changes in Vim and have found yourself accidentally invoking it via Git, you might find yourself in Vim's Normal mode. To exit Vim, you can follow these general steps: 1. Press `ESC` to ensure you are in Normal mode. 2. Type `:q!` to quit without saving changes, or `:wq` to write (save) your changes and then quit. 3. Press `Enter`. Keep in mind that knowing how to exit Vim is a common issue for beginners, so you're not alone in this; once set to nano, you should find it more intuitive if you're unfamiliar with Vim. However, I would also encourage you to invest time in learning Vim or your chosen editor well, as it can greatly improve your efficiency and comfort in code management tasks.