NOTE: If you will need to work with multiple versions of Node.js on the same host, such as performing automated builds of Angular apps for different Angular versions, then these steps won't work for you. Instead, you need to install NVM to manage those versions of Node.js.
#### Removing Old Versions Before installing Node.js, it is necessary to remove any existing version of Node from the host. Be sure to remove any existing versions of Node.js before continuing. Normally, you can do this through the package manager that installed it.NOTE: If you're running Ubuntu 22, you will need to follow this: [Ubuntu 22: Removing Existing Node.js](https://wiki.galaxydump.com/link/115)
Check if Node.js was installed via APT: ```bash dpkg -l | grep nodejs ``` If found, remove it with this: ```bash sudo apt remove --purge nodejs npm -y sudo apt autoremove -y ``` If Node.js was installed, via NVM (Node Version Manager), and you want to remove a version that NVM is maintaining, do this: ```bash nvm uninstallNOTE: This will install a single Node.js version. See the later section for installing multiple Node.js versions.
Use this to install the desired version of Node.js: ```bash sudo apt update sudo apt-get install -y ca-certificates curl gnupg sudo mkdir -p /etc/apt/keyrings curl -fsSL https://deb.nodesource.com/gpgkey/nodesource-repo.gpg.key | sudo gpg --dearmor -o /etc/apt/keyrings/nodesource.gpg NODE_MAJOR=20 echo "deb [signed-by=/etc/apt/keyrings/nodesource.gpg] https://deb.nodesource.com/node_$NODE_MAJOR.x nodistro main" | sudo tee /etc/apt/sources.list.d/nodesource.list sudo apt-get update sudo apt-get install nodejs -y ``` Verify the node version with this: `sudo node -v`