• Start
• Documentation
  • PostgreSQL
  • mnoGoSearch
  • Apache 2.4
  • FreeBSD handbook
  • FreeBSD Manual
  • FreeBSD Source
• Tools
• Search
• Protected Area

plain

FreeBSD manual

keyword 1 2 3 4 5 6 7 8 9 n l

download PDF document: ipcrm.1.pdf

IPCRM(1) FreeBSD General Commands Manual IPCRM(1)
NAME ipcrm - remove the specified message queues, semaphore sets, and shared segments
SYNOPSIS ipcrm [-W] [-v] [-q msqid] [-m shmid] [-s semid] [-Q msgkey] [-M shmkey] [-S semkey] ...
DESCRIPTION The ipcrm utility removes the specified message queues, semaphores and shared memory segments. These System V IPC objects can be specified by their creation ID or any associated key.
The following options are generic:
-v If specified once with -W or with -1 for an object, it will show all removed objects. If specified twice with -W or with -1 for an objects, it will show all removed objects and all failed removals.
-W Try to wipe all specified message queues, semaphores and shared memory segments.
-y Use the kvm(3) interface instead of the sysctl(3) interface to extract the required information. If ipcrm is to operate on the running system, using kvm(3) will require read privileges to /dev/kmem.
The following options are used to specify which IPC objects will be removed. Any number and combination of these options can be used:
-q msqid Remove the message queue associated with the ID msqid from the system.
-m shmid Mark the shared memory segment associated with ID shmid for removal. This marked segment will be destroyed after the last detach.
-s semid Remove the semaphore set associated with ID semid from the system.
-Q msgkey Remove the message queue associated with key msgkey from the system.
-M shmkey Mark the shared memory segment associated with key shmkey for removal. This marked segment will be destroyed after the last detach.
-S semkey Remove the semaphore set associated with key semkey from the system.
HISTORY The wiping of all System V IPC objects was first implemented in FreeBSD 6.4 and 7.1.
AUTHORS The original author was Adam Glass. The wiping of all System V IPC objects was thought up by Callum Gibson and extended and implemented by Edwin Groothuis.
FreeBSD 14.0-RELEASE-p11 December 12, 2007 FreeBSD 14.0-RELEASE-p11