Command Line (cli) Optimize/Compress PNG Image (zopflipng, pngcrush) - Ubuntu
Curl GET, POST, Parameters and JSON

REST API Testing

Install Latest Python (3.7) on Ubuntu via Pyenv

Install different/multiple version of Python

Ubuntu Server Setup With Basic Security
How To Install And Setup Nginx On Ubuntu

Install, nginx service, config file and domain handling.

List Latest Files in Directory
Linux Move Files Older Than N Days to Another Directory
Create Bootable USB Ubuntu with Persistent Storage on Windows
Create Empty File (Linux)
Linux Find and Remove/Delete Files Older Than N Days