2 .\" Copyright (c) 1994 SigmaSoft, Th. Lockert
3 .\" All rights reserved.
5 .\" Redistribution and use in source and binary forms, with or without
6 .\" modification, are permitted provided that the following conditions
8 .\" 1. Redistributions of source code must retain the above copyright
9 .\" notice, this list of conditions and the following disclaimer.
10 .\" 2. Redistributions in binary form must reproduce the above copyright
11 .\" notice, this list of conditions and the following disclaimer in the
12 .\" documentation and/or other materials provided with the distribution.
13 .\" 3. All advertising materials mentioning features or use of this software
14 .\" must display the following acknowledgement:
15 .\" This product includes software developed by SigmaSoft, Th. Lockert.
16 .\" 3. The name of the author may not be used to endorse or promote products
17 .\" derived from this software without specific prior written permission
19 .\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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21 .\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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30 .\" $FreeBSD: src/usr.bin/ipcs/ipcs.1,v 1.9.2.4 2003/04/08 11:07:51 tjr Exp $
31 .\" $DragonFly: src/usr.bin/ipcs/ipcs.1,v 1.7 2008/09/02 11:50:45 matthias Exp $
38 .Nd report System V interprocess communication facilities status
49 utility provides information on System V interprocess communication
50 (IPC) facilities on the system.
52 The options are as follows:
55 Show the maximum amount of information possible when
56 displaying active semaphores, message queues,
57 and shared memory segments.
58 (This is shorthand for specifying the
67 Show the maximum allowed sizes for active semaphores, message queues,
68 and shared memory segments. The
69 .Dq maximum allowed size
70 is the maximum number of bytes in a message on a message queue,
71 the size of a shared memory segment,
72 or the number of semaphores in a set of semaphores.
74 Show the creator's name and group for active semaphores, message queues,
75 and shared memory segments.
77 Display information about IPC mechanisms owned by
79 Group specification can be in the form of a numeric GID or
82 Display information about active shared memory segments.
84 Show outstanding usage for active message queues,
85 and shared memory segments. The
87 is the number of messages in a message queue, or the number
88 of processes attached to a shared memory segment.
90 Show the process ID information for active semaphores, message queues,
91 and shared memory segments. The
92 .Dq process ID information
93 is the last process to send a message to or receive a message from
95 the process that created a semaphore, or the last process to attach
96 or detach a shared memory segment.
98 Display information about active message queues.
100 Display information about active semaphores.
102 Show access times for active semaphores, message queues,
103 and shared memory segments. The access times is the time
104 of the last control operation on an IPC object,
105 the last send or receive of a message,
106 the last attach or detach of a shared memory segment,
107 or the last operation on a semaphore.
109 Display information about IPC mechanisms owned by
111 User specification can be in the form of a numeric UID or
114 Extract values associated with the name list from the specified
115 core instead of the default
118 Display system information about shared memory.
120 Extract the name list from the specified system instead of the
122 .Dq Pa /boot/kernel .
124 Display system information about messages queues.
126 Display system information about semaphores.
128 Display system information about shared memory, message queues
140 options are specified, information about all active IPC facilities is
143 System data structures may change while
145 is running; the output of
147 is not guaranteed to be consistent.
149 .Bl -tag -width /etc/passwd -compact
151 default kernel memory
153 default system name list
158 .An Thorsten Lockert Aq tholo@sigmasoft.com
160 This manual page is woefully incomplete, because it does not
161 at all attempt to explain the information printed by