UNIX编程常见问题解答

1. Process Control 1.1 Creating new processes: fork() 1.1.1 What does fork() do? 1.1.2 What's the difference between fork() and vfork()? 1.1.3 Why use _exit rather than exit in the child branch of a fork? 1.2 Environment variables 1.2.1 How can I get/set an environment variable f