1/* sort -k2,2g */
2IPC_RMID 0
3IPC_SET 1
4IPC_STAT 2
5IPC_INFO 3
6GETPID 11
7GETVAL 12
8GETALL 13
9GETNCNT 14
10GETZCNT 15
11SETVAL 16
12SETALL 17
13SEM_STAT 18
14SEM_INFO 19
15SEM_STAT_ANY 20
16