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.
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
Troubleshooting
Distributions
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.