Linux 101 Hacks 系列：
Chapter 1: Powerful CD Command Hacks__Linux 101 Hacks
Chapter 2: Date Manipulation__Linux 101 Hacks
Chapter 3: SSH Client Commands __Linux 101 Hacks
Chapter 4: Essential Linux Commands (part 1) __Linux 101 Hacks
Chapter 4: Essential Linux Commands (part 2) __Linux 101 Hacks
Chapter 5: PS1, PS2, PS3, PS4 and PROMPT_COMMAND __Linux 101 Hacks
