[A-6506] Some Useful Linux Commands

Contents
1 Introduction
2 Shorthand at the Command Prompt
3 Typical Dot Files
4 Useful Files
5 Important Directories
6 Important Bash Shell Variables
7 Important Daemons and Startup Services
8 Window Managers
9 Alphabetical List of Principal Commands
10 Notes on Applications
10.1 Mail Transfer Agents (MTAs)
10.2 Mail User Agents (MUAs)
10.3 Editors
10.4 Other
11 Some Nifty Slogans
12 References