Install node.js under Ubuntu

There is no doubt that ubuntu is friendly to novices. In terms of stability, centos have their own advantages.

If you are running on your own local VM, the commonly used ubuntu14.04 is recommended to download. I bought Ali's [Cloud Server] (https://cloud.tencent.com/product/cvm?from=10680) not long ago. Ubuntu only supports 16.04. Today I will reconfigure the environment.

First connect to our server, here I use the finalShell terminal connection, it is very convenient, supports copy and paste, and visualize folders.

Look at the software renderings:

(1) Organize the environment#

1. Let's update the toolkit first to prevent future troubles:

sudo apt-get update

2. Install the server to maintain daily dependencies (considering the use of git later, so git is installed here), execute the command

sudo apt-get install git vim openssl build-essential libssh-dev wget curl

The environment is comfortable here

(2) Install nvm and node.js

1. Execute the following code to install nvm. The installation command can be found by searching for nvm on github.

Address: https://github.com/nvm-sh/nvm

curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.33.2/install.sh | bash
nvm ls

2. After the installation is successful, we execute nvm ls to check the installation of nvm, the general situation is as follows:

3. There will usually be a No Commond error. Don't be afraid. It is normal and lacks environment variables. Let's configure it next:

4. Enter nvm installation to the file directory

 cd ～/.nvm

View the list of files in the directory ls

If there is no .bash_profile file, create and edit the file:

touch .bash_profile
vim .bash_profile

Paste the edited content directly:

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

Save and close this file. Update the environment changes just configured

source .bash_profile

Enter the nvm ls command to verify whether it is successful, *At this time, enter nvm ls and it is empty, as shown below: *

touch .bash_profile
vim .bash_profile

This is because the corresponding nodejs has not been installed

4. Execute the following command to install node.jsv8.1.2

nvm install v8.1.2

( Three) test node.js#

Let’s go to the official website of node.js, here to talk about the Chinese version that is not tested, the English version’s address: https://nodejs.org/en/about/

We create a new server.js under the / directory. Copy the content

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}/`);});

Run the code through the node server, the effect diagram is as follows:

At this point, our nodejs environment is installed.