Process Basics

Core Idea

A running command is a process with an owner, id, command line, and resource usage.

Practice Alone

Use ps for a snapshot and htop for an interactive view.

Done When

You can name one process you own and explain why it is running.

Go Deeper

• Process is the fuller process model.
• CPU explains CPU time and load.
• Memory explains process memory and system memory.
• Signal explains Ctrl-C, Ctrl-Z, kill, fg, and bg.
• Syscall explains how processes ask the kernel for services.
• Kernel and User Space explain the privilege boundary.