close()

Close a file descriptor 

dup()

Duplicate an open file descriptor 

dup2()

Duplicate an open file descriptor 

fchmod()

Change mode of file 

fchown()

Change owner and group of a file 

fcntl()

File control 

fpathconf()

Get configurable pathname variables 

fstat()

Get file status 

ftruncate()

Set size of a shared memory object 

mmap()

Map actor addresses to memory object. 

munmap()

Unmap previously mapped addresses 

shm_open()

Open a shared memory object 

shm_unlink()

Unlink a shared memory object