To install homebrew package manager.

 1. Install Xcode Command Line Tools manually:

Open Terminal and run: ``` xcode-select --install ``` This should open a pop-up window asking if you want to install the command line developer tools. Click "Install" and wait for the process to complete. 2. If the above doesn't work, you can download the Command Line Tools manually: - Go to https://developer.apple.com/download/more/ - Sign in with your Apple ID - Search for "Command Line Tools" - Download the appropriate version for your macOS - Once downloaded, run the installer 3. After installation, verify that it was successful: ``` xcode-select -p ``` This should return `/Library/Developer/CommandLineTools` 4. If you still encounter issues, try resetting the Xcode path: ``` sudo xcode-select --reset ``` 5. If none of the above work, you might need to install the full Xcode application from the App Store, although this is usually not necessary just for the command line tools. After successfully installing the Command Line Tools, you should be able to proceed with installing Homebrew.

If you don't have Homebrew installed, first install it by running this command in Terminal: ``` /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)" ``` Once Homebrew is installed, you can install nano by running: ``` brew install nano ```