1 SEMOP 1 2 SEMGET 2 3 SEMCTL 3 4 SEMTIMEDOP 4 5 MSGSND 11 6 MSGRCV 12 7 MSGGET 13 8 MSGCTL 14 9 SHMAT 21 10 SHMDT 22 11 SHMGET 23 12 SHMCTL 24 13
