interfaces employed in the API are: shm_open (3) Create and open a new object ... Close the file descriptor allocated by shm_open (3) when it is no longer neededshared memory object built created using shm_open (3)). Before being used, an unnamed semaphorefollowing functions are present: mmap () munmap () shm_open () shm_unlink () --- - _POSIX_SHELL - _SC_SHELLshared memory segments, as created via shm_open (3). This directory is flushed on boot