Chapter 20 Building Command-Line Programs

• 20.1 Command-line arguments
• 20.2 Reading and writing files
• 20.3 stdin, stdout, and stderr
• 20.4 Environment variables
• 20.5 Project: a text-search tool, part 1
• 20.6 Project: a text-search tool, part 2
• 20.x Chapter 20 summary and quiz