What is a parent process?

A parent process is a process that creates one or more child processes in an operating system. Here’s a brief overview:

1. Creation: The parent process is responsible for creating child processes using system calls like fork() in Unix/Linux. When a process calls fork(), it creates a duplicate of itself, which becomes the child process.

2. Hierarchy: Processes in an operating system are organized in a hierarchical structure. The parent process can have multiple child processes, and each child can also become a parent to its own children.

3. Resource Management: The parent process can manage resources for its child processes, such as file descriptors and memory. It can also set environmental variables that the child processes inherit.

4. Termination: When a child process terminates, the parent process can retrieve its exit status using wait(). This helps the parent manage its child processes effectively.

Example:

When you open a terminal and run a command, the terminal (the parent process) creates a child process to execute that command.

If you have further questions or need clarification, feel free to ask!