.\" Copyright 1993 Rickard E. Faith (faith@cs.unc.edu)
.\" May be distributed under the GNU General Public License
.TH IPCS 1 "February 2008" "util-linux" "User Commands"
.SH NAME
ipcs \- provide information on ipc facilities
.SH SYNOPSIS
.B ipcs
.RB [ \-asmq ]
.RB [ \-tclup ]
.br
.B ipcs
.RB [ \-smq ]
.BI \-i " id"
.br
.B ipcs \-h
.SH DESCRIPTION
.B ipcs
provides information on the ipc facilities for which the calling process
has read access.

The
.B \-i
option allows a specific resource
.I id
to be specified.  Only information on this
.I id
will be printed.

Resources may be specified as follows:
.TP
.B \-m
shared memory segments
.TP
.B \-q
message queues
.TP
.B \-s
semaphore arrays
.TP
.B \-a
all (this is the default)
.PP
The output format may be specified as follows:
.TP
.B \-t
time
.TP
.B \-p
pid
.TP
.B \-c
creator
.TP
.B \-l
limits
.TP
.B \-u
summary
.SH SEE ALSO
.BR ipcrm (1),
.BR ipcmk (1)
.SH CONFORMING TO
The Linux ipcs utility is not fully compatible to the POSIX ipcs utility.
The Linux version does not support the
.B \-b
and
.B \-o
options, but does support the
.B \-l
and
.B \-u
options not defined by POSIX. The portable application shall not use the
.BR \-a ,
.BR \-b ,
.BR \-o ,
.BR \-l ,
and
.B \-u
options.
.SH AUTHOR
krishna balasubramanian (balasub@cis.ohio-state.edu)
.SH AVAILABILITY
The ipcs command is part of the util-linux package and is available from
ftp://ftp.kernel.org/pub/linux/utils/util-linux/.