its about inbuilt functions in c
when I write my operating system program in c(compiled in linux,Iam unable to understand certain inbuilt functions like
1.for semaphores
sembuf,SEM_UNDO,IPC_NOWAIT,semop(DE, ,),semptr,SHM_R,SHM_W,SETVAL, semctl(),shmget(IPC_PRIVATE,1,0666|IPC_CREAT),fork (),shmat().
pipe()
could anyone clarify what these functions are actually meant by
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