# install nodejs npm
- refer to https://segmentfault.com/a/1190000007542620



### install and update
``` bash
sudo apt install nodejs
sudo apt install npm
sudo npm install n@latest -g
sudo n stable
sudo npm install npm@latest -g
node -v
npm -v

sudo npm install -g cnpm --registry=https://registry.npm.taobao.org

#or
npm config set registry https://registry.npm.taobao.org
npm config get registry
```

- if error: /usr/bin/env: node: No such file or directory

    > ln -s /usr/bin/nodejs /usr/bin/node

- if old nodejs still exist

    > sudo apt-get purge nodejs


### node && yarn

```bash
# yarn

curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | sudo apt-key add -
echo "deb https://dl.yarnpkg.com/debian/ stable main" | sudo tee /etc/apt/sources.list.d/yarn.list
sudo apt-get update && sudo apt-get install yarn

sudo yarn global add n
sudo n stable

```