Essential Books
0 Introduction
1 How a command line is interpreted
2 Batch reloading
3 Environment variables
4 Switches
5 Error level
6 String processing
7 Command-line arguments
8 Wildcards
9 User input
10 %~ (percent tilde)
11 Functions
12 Calculation
13 Finding files
14 Keyboard shortcuts
15 Paths
16 Arrays
17 Perl one-liners
18 Limitations
19 Built-in commands
20 External commands
21 Legal & credits