initialize an unnamed semaphore NAME sem_init - initialize an unnamed semaphore LIBRARY POSIX threads library ( libpthread , -lpthread ) SYNOPSIS #include <semaphore.h> int sem_ini…...2), fcntl (2), fstat (2), ftruncate (2), memfd_create (2), mmap (2), open (2), umask (2), shm_overview (7)...2), fcntl (2), fstat (2), ftruncate (2), memfd_create (2), mmap (2), open (2), umask (2), shm_overview (7)unlock a semaphore NAME sem_post - unlock a semaphore LIBRARY POSIX threads library ( libpthread , -lpthread ) SYNOPSIS #include <semaphore.h> int sem_post(sem_t * sem ); DESCRIPTI…map or unmap files or devices into memory NAME mmap, munmap - map or unmap files or devices into memory LIBRARY Standard C library ( libc , -lc ) SYNOPSIS #include <sys/mman.h> voi…open a message queue NAME mq_open - open a message queue LIBRARY Real-time library ( librt , -lrt ) SYNOPSIS #include <fcntl.h> /* For O_* constants */ #include <sys/stat.h> /* For…get/set message queue attributes NAME mq_getattr, mq_setattr - get/set message queue attributes LIBRARY Real-time library ( librt , -lrt ) SYNOPSIS #include <mqueue.h> int mq_getat…get/set message queue attributes NAME mq_getattr, mq_setattr - get/set message queue attributes LIBRARY Real-time library ( librt , -lrt ) SYNOPSIS #include <mqueue.h> int mq_getat…initialize and open a named semaphore NAME sem_open - initialize and open a named semaphore LIBRARY POSIX threads library ( libpthread , -lpthread ) SYNOPSIS #include <fcntl.h> /* …send a message to a message queue NAME mq_send, mq_timedsend - send a message to a message queue LIBRARY Real-time library ( librt , -lrt ) SYNOPSIS #include <mqueue.h> int mq_send…send a message to a message queue NAME mq_send, mq_timedsend - send a message to a message queue LIBRARY Real-time library ( librt , -lrt ) SYNOPSIS #include <mqueue.h> int mq_send…remove a named semaphore NAME sem_unlink - remove a named semaphore LIBRARY POSIX threads library ( libpthread , -lpthread ) SYNOPSIS #include <semaphore.h> int sem_unlink(const ch…close a named semaphore NAME sem_close - close a named semaphore LIBRARY POSIX threads library ( libpthread , -lpthread ) SYNOPSIS #include <semaphore.h> int sem_close(sem_t * sem …remove a message queue NAME mq_unlink - remove a message queue LIBRARY Real-time library ( librt , -lrt ) SYNOPSIS #include <mqueue.h> int mq_unlink(const char * name ); DESCRIPTIO…close a message queue descriptor NAME mq_close - close a message queue descriptor LIBRARY Real-time library ( librt , -lrt ) SYNOPSIS #include <mqueue.h> int mq_close(mqd_t mqdes )…get the value of a semaphore NAME sem_getvalue - get the value of a semaphore LIBRARY POSIX threads library ( libpthread , -lpthread ) SYNOPSIS #include <semaphore.h> int sem_getva…destroy an unnamed semaphore NAME sem_destroy - destroy an unnamed semaphore LIBRARY POSIX threads library ( libpthread , -lpthread ) SYNOPSIS #include <semaphore.h> int sem_destro…API to access system level information in the /proc filesystem NAME procps - API to access system level information in the /proc filesystem SYNOPSIS Five distinct interfaces are re…API to access process information in the /proc filesystem NAME procps_pids - API to access process information in the /proc filesystem SYNOPSIS #include <libproc2/pids.h> int procp…receive a message from a message queue NAME mq_receive, mq_timedreceive - receive a message from a message queue LIBRARY Real-time library ( librt , -lrt ) SYNOPSIS #include <mqueu…