ipcrm(1) [sunos man page]
ipcrm(1) User Commands ipcrm(1) NAME
ipcrm - remove a message queue, semaphore set, or shared memory ID SYNOPSIS
ipcrm [-z zone] [-m shmid] [-q msqid] [-s semid] [-M shmkey] [-Q msgkey] [-S semkey] DESCRIPTION
ipcrm removes one or more messages, semaphores, or shared memory identifiers. OPTIONS
The following option is supported: -z zone Keys specified by other options refer to facilities in the specified zone (see zones(5)). The default is the zone in which the command is executing. This option is only useful when the command is executed in the global zone. The identifiers are specified by the following options: -m shmid Removes the shared memory identifier shmid from the system. The shared memory segment and data structure associated with it are destroyed after the last detach. -q msqid Removes the message queue identifier msqid from the system and destroys the message queue and data structure associated with it. -s semid Removes the semaphore identifier semid from the system and destroys the set of semaphores and data structure associated with it. -M shmkey Removes the shared memory identifier, created with key shmkey, from the system. The shared memory segment and data struc- ture associated with it are destroyed after the last detach. -Q msgkey Removes the message queue identifier, created with key msgkey, from the system and destroys the message queue and data structure associated with it. -S semkey Removes the semaphore identifier, created with key semkey, from the system and destroys the set of semaphores and data structure associated with it. The details of the removes are described in msgctl(2), shmctl(2), and semctl(2). Use the ipcs command to find the identifiers and keys. ENVIRONMENT VARIABLES
See environ(5) for descriptions of the following environment variables that affect the execution of ipcrm: LANG, LC_ALL, LC_CTYPE, LC_MESSAGES, and NLSPATH. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWipc | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ SEE ALSO
ipcs(1), msgctl(2), msgget(2), msgrcv(2), msgsnd(2), semctl(2), semget(2), semop(2), shmctl(2), shmget(2), shmop(2), attributes(5), envi- ron(5), standards(5), zones(5) SunOS 5.10 9 Jan 2004 ipcrm(1)
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IPCRM(1) User Commands IPCRM(1) NAME
ipcrm - remove a message queue, semaphore set or shared memory id SYNOPSIS
ipcrm [ -M key | -m id | -Q key | -q id | -S key | -s id ] ... deprecated usage ipcrm {shm|msg|sem} id... DESCRIPTION
ipcrm removes System V interprocess communication (IPC) objects and associated data structures from the system. In order to delete such objects, you must be superuser, or the creator or owner of the object. System V IPC objects are of three types: shared memory, message queues, and semaphores. Deletion of a message queue or semaphore object is immediate (regardless of whether any process still holds an IPC identifier for the object). A shared memory object is only removed after all currently attached processes have detached (shmdt(2)) the object from their virtual address space. Two syntax styles are supported. The old Linux historical syntax specifies a three letter keyword indicating which class of object is to be deleted, followed by one or more IPC identifiers for objects of this type. The SUS-compliant syntax allows the specification of zero or more objects of all three types in a single command line, with objects speci- fied either by key or by identifier. (See below.) Both keys and identifiers may be specified in decimal, hexadecimal (specified with an initial '0x' or '0X'), or octal (specified with an initial '0'). OPTIONS
-M shmkey removes the shared memory segment created with shmkey after the last detach is performed. -m shmid removes the shared memory segment identified by shmid after the last detach is performed. -Q msgkey removes the message queue created with msgkey. -q msgid removes the message queue identified by msgid. -S semkey removes the semaphore created with semkey. -s semid removes the semaphore identified by semid. The details of the removes are described in msgctl(2), shmctl(2), and semctl(2). The identifiers and keys may be found by using ipcs(1). NOTES
In its first Linux implementation, ipcrm used the deprecated syntax shown in the SYNOPSIS. Functionality present in other *nix implementa- tions of ipcrm has since been added, namely the ability to delete resources by key (not just identifier), and to respect the same command- line syntax. For backward compatibility the previous syntax is still supported. SEE ALSO
ipcs(1), ipcmk(1), msgctl(2), msgget(2), semctl(2), semget(2), shmctl(2), shmdt(2), shmget(2), ftok(3) AVAILABILITY
The ipcrm command is part of the util-linux package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux/. util-linux March 2002 IPCRM(1)