Upgrading Node.js via the terminal depends on the operating system you're using. Here are instructions for some common environments: macOS, Linux, and Windows.

macOS and Linux

Using Node Version Manager (nvm)

1. Install nvm (if not already installed):
   

   curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.3/install.sh | bash
   

- Follow the instructions in the terminal to add `nvm` to your shell profile (`.bashrc`, `.zshrc`, etc.).

1. Reload your shell profile:
   

   source ~/.bashrc  # or ~/.zshrc, ~/.profile, etc.
   

2. Install the latest Node.js version:
   

   nvm install node
   

- Alternatively, you can specify a version:

  ```sh
  nvm install 16.17.0  # replace with the desired version
  ```

1. Use the installed version:
   

   nvm use node
   

2. Set the default version (optional):
   

   nvm alias default node
   

Using Homebrew (macOS only)

1. Update Homebrew:
   

   brew update
   

2. Upgrade Node.js:
   

   brew upgrade node
   

Windows

Using nvm-windows

1. Download nvm-windows from the nvm-windows releases page.

2. Install nvm-windows by running the installer.

3. Open Command Prompt or PowerShell as Administrator.

4. Install the desired Node.js version:
   

   nvm install latest
   

- Alternatively, you can specify a version:

  ```sh
  nvm install 16.17.0  # replace with the desired version
  ```

1. Use the installed version:
   

   nvm use latest
   

Verifying Installation

After upgrading, verify the installed Node.js version by running:

node -v

This should output the version of Node.js that you have just installed.

By following these steps, you should be able to upgrade Node.js to the desired version on your system.