We can check the details of system V message queue with the help of ipcscommand. Is there any command to check POSIX message queue in Linux?
linux command to check POSIX message queue
linux;posix;ipc
There is no command I know of but there exists a libc function call which can get the statistics:man 3 mq_getattr   mq_getattr() returns an mq_attr structure  in  the  buffer  pointed  by   attr.  This structure is defined as:       struct mq_attr {           long mq_flags;       /* Flags: 0 or O_NONBLOCK */           long mq_maxmsg;      /* Max. # of messages on queue */           long mq_msgsize;     /* Max. message size (bytes) */           long mq_curmsgs;     /* # of messages currently in queue */       };