1130b656e5
This will make a number of things easier in the future, as well as (finally!) avoiding the Id-smashing problem which has plagued developers for so long. Boy, I'm glad we're not using sup anymore. This update would have been insane otherwise.
152 lines
4.8 KiB
Groff
152 lines
4.8 KiB
Groff
.\"
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.\" Copyright (c) 1994 SigmaSoft, Th. Lockert
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by SigmaSoft, Th. Lockert.
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.\" 3. The name of the author may not be used to endorse or promote products
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.\" derived from this software without specific prior written permission
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd June 18, 1994
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.Dt "IPCS" 1
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.Os FreeBSD 2.0
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.Sh NAME
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.Nm ipcs
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.Nd report System V interprocess communication facilities status
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.Sh SYNOPSIS
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.Nm ipcs
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.Op Fl abcmopqstMQST
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.Op Fl C Ar system
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.Op Fl N Ar core
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.Sh DESCRIPTION
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The
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.Nm ipcs
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program provides information on System V interprocess communication
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(IPC) facilities on the system.
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.Pp
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The options are as follows:
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.Bl -tag -width Ds
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.It Fl a
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Show the maximum amount of information possible when
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displaying active semaphores, message queues,
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and shared memory segments.
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(This is shorthand for specifying the
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.Fl b ,
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.Fl c ,
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.Fl o ,
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.Fl p ,
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and
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.Fl t
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options.)
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.It Fl b
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Show the maximum allowed sizes for active semaphores, message queues,
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and shared memory segments. The
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.Dq maximum allowed size
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is the maximum number of bytes in a message on a message queue,
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the size of a shared memory segment,
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or the number of semaphores in a set of semaphores.
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.It Fl c
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Show the creator's name and group for active semaphores, message queues,
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and shared memory segments.
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.It Fl m
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Display information about active shared memory segments.
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.It Fl o
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Show outstanding usage for active message queues,
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and shared memory segments. The
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.Dq outstanding usage
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is the number of messages in a message queue, or the number
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of processes attached to a shared memory segment.
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.It Fl p
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Show the process ID information for active semaphores, message queues,
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and shared memory segments. The
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.Dq process ID information
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is the last process to send a message to or receive a message from
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a message queue,
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the process that created a semaphore, or the last process to attach
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or detach a shared memory segment.
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.It Fl q
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Display information about active message queues.
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.It Fl s
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Display information about active semaphores.
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.It Fl t
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Show access times for active semaphores, message queues,
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and shared memory segments. The access times is the time
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of the last control operation on an IPC object,
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the last send or receive of a message,
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the last attach or detach of a shared memory segment,
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or the last operation on a semaphore.
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.It Fl C Ar system
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Extract the name list from the specified system instead of the
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default
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.Dq Pa /kernel .
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.It Fl M
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Display system information about shared memory.
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.It Fl N Ar core
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Extract values associated with the name list from the specified
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core instead of the default
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.Dq Pa /dev/kmem .
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and semaphores.
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.It Fl Q
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Display system information about messages queues.
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.It Fl S
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Display system information about semaphores.
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.It Fl T
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Display system information about shared memory, message queues
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.El
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.Pp
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If none of the
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.Fl M ,
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.Fl m ,
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.Fl Q ,
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.Fl q ,
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.Fl S ,
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or
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.Fl s
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options are specified, information about all active IPC facilities is
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listed.
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.Sh RESTRICTIONS
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System data structures may change while
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.Nm ipcs
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is running; the output of
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.Nm ipcs
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is not guaranteed to be consistent.
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.Sh BUGS
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This manual page is woefully incomplete, because it does not
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at all attempt to explain the information printed by
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.Nm ipcs .
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.Sh FILES
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.Bl -tag -width /etc/passwd -compact
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.It Pa /dev/kmem
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default kernel memory
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.It Pa /kernel
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default system name list
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.El
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.Sh SEE ALSO
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.Xr ipcrm 1
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.Sh AUTHOR
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.Bl -tag
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Thorsten Lockert <tholo@sigmasoft.com>
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.El
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