Issue
What is the best way that Node.js can be installed on linux without internet nor root permissions. So far I just downloaded the source tar.gz and tar.xz files.
Solution
To install nodejs on linux without root permission and offline
Download the tar.xz from Linux Binaries(x64) @ https://nodejs.org/en/download/
Then in ~.bashrc add:
NODE_HOME=~/apps/node-v12.18.3-linux-x64
PATH=$NODE_HOME/bin:$PATH
Source the bashrc file or restart terminal and you are done
source .bashrc
Try
node --version
npm -v
Answered By - Youssef Mohamed Answer Checked By - Clifford M. (WPSolving Volunteer)