#sorted sort -k2,2g
IPC_RMID 0
IPC_SET 1
IPC_STAT 2
IPC_INFO 3
GETPID 11
GETVAL 12
GETALL 13
GETNCNT 14
GETZCNT 15
SETVAL 16
SETALL 17
SEM_STAT 18
SEM_INFO 19
SEM_STAT_ANY 20