Install npm and node on ubuntu20.04

curl -fsSL https://deb.nodesource.com/setup_17.x | sudo -E bash -

sudo apt-get install -y nodejs

After running the installation, npm and node commands should be available.

sudo npm install -g npm@latest

Update npm to the latest version.

npm audit fix

Address possible vulnerabilities.

sudo npm install -g n

Install node's package management tool n.

sudo n latest

Install the latest version of node (LTS version is recommended).

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Additional：

sudo n lts

Install the latest LTS version of node.

sudo n

Enter n's graphical interface and select the version you want to use.

sudo n prune

Removing other versions can save memory space.