The third chapter of the book is to explain some of the basic tools of the role and usage.
The first section tells of the text tool it has to keep it up, leverage, and the advantage of easier testing. Which have been tested and which I feel is very deep, you want to modify the changes directly in text format, and then change the format they need can already run.
Section talking about the shell game is about the shell command, when you really skilled, you know that the efficiency of powerful shell commands. And now shell, not just for unix on windows also gradually began to show charisma.
The next section is the editor, I learned to choose an editor to edit all future attempts to use this editor, master it. Select the editor must have configurable, extensible, programmable.
The next section is the source control, source control the most basic function is to undo mistakes and also have a very important role on bug fixes.