Operating Systems

Microsoft Windows

Windows 11

Linux / Unix / BSD

UNIX and Linux System Administration Handbook

  • UNIX and Linux System Administration Handbook, is today’s definitive guide to installing, configuring, and maintaining any UNIX or Linux system, including systems that supply core Internet and cloud infrastructure.

100+ Linux commands cheat sheet & examples

The Ultimate A To Z List of Linux Commands | Linux Command Line Reference

38 Basic Linux Commands To Learn With Examples

nixCraft: Linux Tips, Hacks, Tutorials, and Ideas

Learning the Linux File System by Joe Collins

Users, Groups and Permissions in Linux by Eli the Computer Guy

LinuxCBT.com provides Comprehensive, Cost-effective Open Source Training

Top 10 Linux Job Interview Questions by tutoriaLinux



Lubuntu is a complete Operating System that ships the essential apps and services for daily use: office applications, PDF reader, image editor, music and video players, etc.

  • Lubuntu is offered in many ISOs for several computers, like standard PC, laptops, Raspberry Pi, PowerPC, etc.
  • Lubuntu works well on slower or older systems.

CentOS Project is a community-driven free software effort. CentOS is effectively a community rebuild from RedHat .srpms.

SUSE Linux Enterprise Server (SLES)