完全卸载nodejs

apt remove nodejs npm -y

bash
# 删除node.node_modules文件夹
rm -rf /usr/local/lib/node*
rm -rf  /usr/local/include/node*
rm -rf /usr/local/node*

bash
# 查找并删除~文件夹里的node和node_modules文件夹
find ~/ -name node
find ~/ -name node_modules

# 使用rm -rf 命令删除对应结果

bash
# 删除node可执行文件
rm -rf /usr/local/bin/npm
rm -rf /usr/local/share/man/man1/node.1
rm -rf  /usr/local/lib/dtrace/node.d
rm -rf ~/.npm
rm -rf /usr/bin/node
rm -rf /usr/bin/npm

安装制定版本nodejs

bash
# 下载解压nodejs
wget https://nodejs.org/dist/v12.13.0/node-v12.13.0-linux-x64.tar.xz
tar -zxvf node-v12.13.0-linux-x64.tar.xz

建立软链接

sudo ln -s /opt/modules/node-v6.17.1-linux-x64/bin/node /usr/bin/node

sudo ln -s /opt/modules/node-v6.17.1-linux-x64/bin/npm /usr/bin/npm

查看版本

node -v
npm -v

---

安装方法

1. 更新系统

sudo apt update
sudo apt -u upgrade
12

2. 添加nodejs apt仓库

sudo apt -y install curl dirmngr apt-transport-https lsb-release ca-certificates
curl -sL https://deb.nodesource.com/setup_12.x | sudo -E bash -

3. 安装nodejs12

sudo apt -y install nodejs
sudo apt install gcc g++ make
12

4. 验证

命令行版本确认

$ node --version
v12.10.0

$ npm --version
6.10.3
12345

代码运行验证， 测试代码 hello-world.js

js
const http = require('http');

const hostname = '127.0.0.1';
const port = 3000;

const server = http.createServer((req, res) => {
  res.statusCode = 200;
  res.setHeader('Content-Type', 'text/plain');
  res.end('Hello, World!\n');
});

server.listen(port, hostname, () => {
  console.log(`Server running at http://${hostname}:${port}/`);
});
1234567891011121314

运行代码

shell
node hello-world.js
1

打开浏览器就可以看到“hello world!”

refers:

https://computingforgeeks.com/how-to-install-nodejs-on-[ubuntu](https://so.csdn.net/so/search?q=ubuntu&spm=1001.2101.3001.7020)-debian-linux-mint/