Linux Creating Process

 Creating a process in Linux involves the following steps:

  1. Forking: A new process is created by duplicating the existing process using the fork() system call. The new process is called the child process, and the existing process is called the parent process.

  2. Executing: The child process runs a different program using the exec() family of system calls. The program loaded into the child process can be a completely new program or a modified version of the parent process.

  3. Address space: The child process has its own address space, which is a copy of the parent process's address space. However, the child process can modify its address space without affecting the parent process.

  4. Unique process ID: Each process in Linux is identified by a unique process ID (PID). The child process is assigned a new PID, which is different from the parent process's PID.

  5. Resource sharing: The child process inherits many resources from the parent process, such as open files and sockets, memory segments, and signal handlers. However, the child process can modify these resources without affecting the parent process.

  6. Parent-child communication: The parent process can communicate with the child process using interprocess communication (IPC) mechanisms such as pipes, sockets, and shared memory.

Overall, creating a process in Linux involves forking an existing process, loading a new program into the child process, and modifying its address space and resources. The child process then runs independently of the parent process, but they can communicate with each other if needed.

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