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  2. fork (system call) - Wikipedia

    en.wikipedia.org/wiki/Fork_(system_call)

    For a process to start the execution of a different program, it first forks to create a copy of itself. Then, the copy, called the "child process", calls the exec system call to overlay itself with the other program: it ceases execution of its former program in favor of the other. The fork operation creates a separate address space for the ...

  3. Fork–exec - Wikipedia

    en.wikipedia.org/wiki/Fork–exec

    fork() is the name of the system call that the parent process uses to "divide" itself ("fork") into two identical processes. After calling fork(), the created child process is an exact copy of the parent except for the return value of the fork() call. This includes open files, register state, and all memory allocations, which includes the ...

  4. Child process - Wikipedia

    en.wikipedia.org/wiki/Child_process

    The wait system call is commonly invoked in the SIGCHLD handler. POSIX.1-2001 allows a parent process to elect for the kernel to automatically reap child processes that terminate by explicitly setting the disposition of SIGCHLD to SIG_IGN (although ignore is the default, automatic reaping only occurs if the disposition is set to ignore ...

  5. Fork (software development) - Wikipedia

    en.wikipedia.org/wiki/Fork_(software_development)

    The word "fork" has been used to mean "to divide in branches, go separate ways" as early as the 14th century. [2] In the software environment, the word evokes the fork system call, which causes a running process to split itself into two (almost) identical copies that (typically) diverge to perform different tasks.

  6. Category:System calls - Wikipedia

    en.wikipedia.org/wiki/Category:System_calls

    Download QR code; Print/export ... Exec (system call) Execute Channel Program in Real Storage; F. Fork (system call) FreeBSD jail; I. Ioctl; K.

  7. Process identifier - Wikipedia

    en.wikipedia.org/wiki/Process_identifier

    In Unix-like operating systems, new processes are created by the fork() system call. The PID is returned to the parent process , enabling it to refer to the child in further function calls. The parent may, for example, wait for the child to terminate with the waitpid() function, or terminate the process with kill() .

  8. Parent process - Wikipedia

    en.wikipedia.org/wiki/Parent_process

    In Unix-like operating systems, every process except process 0 (the swapper) is created when another process executes the fork() system call. The process that invoked fork is the parent process and the newly created process is the child process. Every process (except process 0) has one parent process, but can have many child processes. The ...

  9. System call - Wikipedia

    en.wikipedia.org/wiki/System_call

    A high-level overview of the Linux kernel's system call interface, which handles communication between its various components and the userspace. In computing, a system call (commonly abbreviated to syscall) is the programmatic way in which a computer program requests a service from the operating system [a] on which it is executed.