This program tries to find out various things about System V IPC Informations from the include files: Shared memory: maximum shared segment size in bytes: 4169728 minimum shared segment size in bytes: 1 maximum number of shared memory segments system wide: 128 maximum number of shared memory pages system wide: 4194304 maximum number of shared segsments per process: 128 Message queues: size in bytes of the largest message we can send: 4056 maximum size in bytes of a particular queue: 16384 maximum number of message queues, systemwide: 128 maximum number of messages, systemwide: 16384 Semaphores: maximum value of any semaphore: 32767 maximum value of any semaphore's adjust-on-exit value: 16383 maximum number of semaphore sets, systemwide: 128 maximum number of semaphores per semaphore set: 32 maximum number of undo structures, systemwide: 4096 maximum number of undo entries per undo structure: 32 maximum number of operations per semop call: 32 This process was able to get 128 shared memory segments This process was able to create 128 message queues This process was able to create 128 semaphore sets