_Fork(3) Library Functions Manual _Fork(3) NAME _Fork - create a child process LIBRARY Standard C library (libc, -lc) SYNOPSIS #include pid_t _Fork(void); DESCRIPTION This function is equivalent to fork(2), except that fork handlers registered with pthread_atfork(3) are not called. STANDARDS POSIX.1-2024. HISTORY POSIX.1-2024. SEE ALSO fork(2), vfork(2) Linux man-pages 6.16 2025-10-29 _Fork(3)