Install Node.js using nvm

Use ‘nvm’ to manage node versions

Bash Install

Install nvm thru nvm bash

 curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.1/install.sh | bash

Or:

 wget -qO- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.1/install.sh | bash

Or (from this blog):

 wget -qO- https://mar2ndx.github.io/files/nvm-0391-install.sh | bash

You may be stuck here, right after you saw this:

 => Downloading nvm from git to '/home/ubuntu/.nvm'
 => Cloning into '/home/ubuntu/.nvm'...
 remote: Enumerating objects: 354, done.
 remote: Counting objects: 100% (354/354), done.
 remote: Compressing objects: 100% (302/302), done.
 remote: Total 354 (delta 40), reused 156 (delta 27), pack-reused 0
 Receiving objects: 100% (354/354), 207.03 KiB | 2.52 MiB/s, done.
 Resolving deltas: 100% (40/40), done.

Wait patiently for a bit. If still no luck, manually paste this to ~/.bashrc

 export NVM_DIR="$HOME/.nvm"
 [ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"  # This loads nvm
 [ -s "$NVM_DIR/bash_completion" ] && \. "$NVM_DIR/bash_completion"  # This loads nvm bash_completion

Run the following. You are all set!
```
 source ~/.bashrc
```

Alternative: Git Install

Bash install might fail for network reasons.

Thus do this:

cd ~/ from anywhere then git clone https://github.com/nvm-sh/nvm.git .nvm
cd ~/.nvm and check out the latest version with git checkout v0.39.1
activate nvm by sourcing it from your shell: . ./nvm.sh

Now add these lines to your ~/.bashrc, ~/.profile, or ~/.zshrc file to have it automatically sourced upon login: (you may have to add to more than one of the above files)

export NVM_DIR="$HOME/.nvm"
[ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"  # This loads nvm
[ -s "$NVM_DIR/bash_completion" ] && \. "$NVM_DIR/bash_completion"  # This loads nvm bash_completion

Reference: https://github.com/nvm-sh/nvm#git-install

Basic Usage

Check current node versions
```
 nvm ls
 nvm ls-remote
```
Install node and npm
```
 nvm install v12
```
Use the following command
```
 nvm use 12
```

Please Note

You may need to uninstall the system version node/npm, otherwise sudo have issues.

A pretty simple work-around would be:

sudo vi ~/.bashrc

Content：

alias node='$NVM_BIN/node'
alias npm='$NVM_BIN/npm'
alias sudo='sudo env PATH=$PATH:$NVM_BIN'

Change node registry to taobao

npm config get registry
npm config set registry https://registry.npm.taobao.org/
npm config set registry https://registry.npmjs.org/

To check

npm info underscore
npm --registry https://registry.npm.taobao.org info underscore
npm config get registry

Useful npm packages

You might need to install these just in case you need them:

npm install -g eslint yarn @vue/cli
npm install -g npx
npm install -g now truffle
npm install -g hexo-cli

To check your globally-installed packges:

npm list -g --depth 0