Ubuntu comes with a pre-installed version of node and npm. To update it to the latest stable version run the following commands in your terminal.

Installing the latest stable npm version

To install the latest stable version of npm on your machine run the following commands in your terminal.

npm install -g npm@latest

To check the version of npm installed on your machine simply type the following command.

npm -v

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Installing the latest stable Node version

sudo npm cache clean -f

sudo npm install -g n

sudo n stable

This will install the latest stable version of Node on your Linux (Ubuntu) machine.

To check the version node installed on your machine simply type the following command.

node -v

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Installing Yarn

Ubuntu does not come pre-installed with Yarn hence we have to install it. Run the command given below in your terminal.

npm install --global yarn

If this doesn't work try using the sudo keyword with it.

sudo npm install --global yarn

To check the version node installed on your machine simply type the following command.

yarn -v