프로세스 간 통신

• signal(7), signal(2), bsd_signal(3), sysv_signal(3), sigaction(2), sigset(3), sigvec(3), siginterrupt(3), restart_syscall(2), sigprocmask(2), sigpending(2), sigsetops(3), sigwaitinfo(2), sigwait(3), sigsuspend(2), sigpause(3), rt_sigqueueinfo(2), sigqueue(3), kill(2), killpg(3), raise(3), pause(2), sigreturn(2), sigaltstack(2), signalfd(2), signal-safety(7)
• eventfd(2)
• fifo(7), mkfifo(3), pipe(7), pipe(2), socketpair(2), unix(7)
• sendfile(2), splice(2), tee(2), vmsplice(2), copy_file_range(2)
• futex(7), futex(2), get_robust_list(2), set_tid_address(2)
• mq_overview(7), mq_close(3), mq_getattr(3), mq_notify(3), mq_open(3), mq_receive(3), mq_send(3), mq_unlink(3)
• sem_overview(7), sem_close(3), sem_getvalue(3), sem_init(3), sem_open(3), sem_post(3), sem_unlink(3), sem_wait(3)
• shm_overview(7), shm_open(3), shm_unlink(3)
• sysvipc(7), ipc(2), msgctl(2), msgget(2), msgrcv(2), msgsnd(2), semctl(2), semop(2), shmat(2), shmctl(2), shmdt(2), shmget(2), ftok(3)