Linux 入门：进程

It’s important to understand processes in Linux because everything we do from the terminal is process oriented. A process is a program running in either the background or the foreground. There are two types of processes, parent and child, and many different commands that can be used to run them. If a process is interrupted, it generates a signal, which can indicate either a serious issue or something that doesn’t necessarily need to be addressed, so it’s imperative to recognize the difference. It’s also imperative to know how to properly shut down Linux, since it’s possible to damage the file system if it’s not shut down correctly. In these lessons, you’ll learn about the types of processes and process-related commands in Linux, as well as signals, how they work together, and how to manage them. You’ll also learn how to shut down the system.

Learning Objectives:

• Know the types of processes
• Recognize the signals and what they indicate
• Understand how to shut down the system