• Distrowatch
• Open-Source and Free Software Licensing
• GPL(General Public Licnese)V3 Documnetation
• CentOS vs Ubuntu
• Ubuntu
  • 13 Keyboard Shortcut Every Ubuntu 18.04 User Should Know
  • Repositories/Ubuntu
    • Ubuntu Packages Search
• Linux Commands Cheat Sheet
• Ubuntu Linux Commnad Line Tutorial

• Linux Features - Multiuser capability, ...Open Source
• Bash Shell Introduction
• Unix vs Linux

• Structure of Linux Operation System(Kernel, System Libraries...)

Command Input and Output

• What Are stdin, stdout, and stderr on Linux?
• Input Output Redirection in Linux

Redirection

• Basic Guide for Redirection
• Official Linux Redirection Manual

Piping

• tee Command
• xargs command
• What is the difference between “Redirection” and “Pipe”?

Tools

• apt Command in Linux
  • Difference Between apt and apt-get

• Linux Files
• Understanding UNIX / Linux File Systems
  • Linux / UNIX: Rules For Naming File And Directory Names
• How to Use Wildcards
• Enable and Use the ‘locate’ Command
• Linux view file cat, less, more, head, tail, tac, rev command
• File Compression - tar, gzip, bzip2, zip
  • Gzip vs Bzip2 vs XZ Performance Comparison
  • tar command in Linux with examples
  • gzip Command in Linux
  • bzip2 command in Linux with Examples
  • zip command in Linux with examples

• Bash Shebang(#!/bin/bash)
• Automated Scheduling
  • crontab guru