A Process in Linux is an instance of a running program, including the program’s code, data, and state. When a program is executed, the operating system creates a process, assigns it a unique Process ID (PID), and allocates system resources like memory and CPU time. Processes can run in the foreground, directly interacting with the user, or in the background, performing tasks without user input. Processes can be managed using commands like ps
(to list running processes), kill
(to terminate processes), and top
(to monitor active processes in real-time). Processes can also be parent or child processes, where a parent process spawns child processes, creating a hierarchical structure.