1. Switch the directory to /usr/local/src
Command line: cd /usr/local/src
2. Download node.js (I downloaded the binary source code here)
Command line: wget https://nodejs.org/dist/v8.9.1/node-v8.9.1-linux-x64.tar.xz
3. Unzip the compressed package
Command line: xz -d node-v8.9.1-linux-x64.tar.xz (there will still be tar files after decompression)
Then execute the command line: tar -xvf node-v8.9.1-linux-x64.tar
Four: switch to the bin directory under the directory
Command line: cd node-v8.9.1-linux-x64/bin/ (you can see node and npm)
Execute the directory to view the node version: ./node -v
Five: Add environment variables (/etc/profile)
Command line: vi /etc/profile (must be root user before executing this data)
Save wq after adding!
Execute another command: source /etc/profile The environment variable is modified