Here is a collection of commands lines, code and configuration snippets I collected for several years while working as an Open-Source Software Engineer:

• Files Management

•  Archives

• System & Shell

•  Network

•  Hardware

•  Apache

•  Web

•  Video

•  Audio

• Image Processing

• Text, Date & Document Processing

• dpkg, APT & Aptitude

• RPM, Urpmi & Yum

•  OpenSSH

• GPG & OpenSSL

• i18n / l10n

•  MySQL

•  PostgreSQL

•  Git

•  VirtualBox

•  Qemu

•  libvirt

•  Exim

•  Python

•  Pandas

•  JavaScript

•  macOS

• AWS

•  Cloudflare

Deprecated and unmaintained commands:

•  transcode

• CD Burning

•  Mercurial

•  Subversion

•  Bazaar

• CVS

•  WordPress