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Diffstat (limited to 'sys-utils/ipcs.1')
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diff --git a/sys-utils/ipcs.1 b/sys-utils/ipcs.1 new file mode 100644 index 0000000..93c35e3 --- /dev/null +++ b/sys-utils/ipcs.1 @@ -0,0 +1,116 @@ +.\" Copyright 1993 Rickard E. Faith (faith@cs.unc.edu) +.\" May be distributed under the GNU General Public License +.TH IPCS "1" "July 2014" "util-linux" "User Commands" +.SH NAME +ipcs \- show information on IPC facilities +.SH SYNOPSIS +.B ipcs +[options] +.SH DESCRIPTION +.B ipcs +shows information on the inter-process communication facilities +for which the calling process has read access. +By default it shows information about all three resources: +shared memory segments, message queues, and semaphore arrays. +.SH OPTIONS +.TP +\fB\-i\fR, \fB\-\-id\fR \fIid\fR +Show full details on just the one resource element identified by +.IR id . +This option needs to be combined with one of the three resource options: +.BR \-m , +.BR \-q " or" +.BR \-s . +.TP +\fB\-h\fR, \fB\-\-help\fR +Display help text and exit. +.TP +\fB\-V\fR, \fB\-\-version\fR +Display version information and exit. +.SS "Resource options" +.TP +\fB\-m\fR, \fB\-\-shmems\fR +Write information about active shared memory segments. +.TP +\fB\-q\fR, \fB\-\-queues\fR +Write information about active message queues. +.TP +\fB\-s\fR, \fB\-\-semaphores\fR +Write information about active semaphore sets. +.TP +\fB\-a\fR, \fB\-\-all\fR +Write information about all three resources (default). +.SS "Output formats" +Of these options only one takes effect: the last one specified. +.TP +\fB\-c\fR, \fB\-\-creator\fR +Show creator and owner. +.TP +\fB\-l\fR, \fB\-\-limits\fR +Show resource limits. +.TP +\fB\-p\fR, \fB\-\-pid\fR +Show PIDs of creator and last operator. +.TP +\fB\-t\fR, \fB\-\-time\fR +Write time information. The time of the last control operation that changed +the access permissions for all facilities, the time of the last +.BR msgsnd (2) +and +.BR msgrcv (2) +operations on message queues, the time of the last +.BR shmat (2) +and +.BR shmdt (2) +operations on shared memory, and the time of the last +.BR semop (2) +operation on semaphores. +.TP +\fB\-u\fR, \fB\-\-summary\fR +Show status summary. +.SS "Representation" +These affect only the \fB\-l\fR (\fB\-\-limits\fR) option. +.TP +\fB\-b\fR, \fB\-\-bytes\fR +Print sizes in bytes. +.TP +.B \-\-human +Print sizes in human-readable format. +.SH SEE ALSO +.BR ipcmk (1), +.BR ipcrm (1), +.BR msgrcv (2), +.BR msgsnd (2), +.BR semget (2), +.BR semop (2), +.BR shmat (2), +.BR shmdt (2), +.BR shmget (2) +.SH CONFORMING TO +The Linux ipcs utility is not fully compatible to the POSIX ipcs utility. +The Linux version does not support the POSIX +.BR \-a , +.B \-b +and +.B \-o +options, but does support the +.B \-l +and +.B \-u +options not defined by POSIX. A portable application shall not use the +.BR \-a , +.BR \-b , +.BR \-o , +.BR \-l , +and +.B \-u +options. +.SH AUTHOR +.UR balasub@cis.ohio-state.edu +Krishna Balasubramanian +.UE +.SH AVAILABILITY +The ipcs command is part of the util-linux package and is available from +.UR https://\:www.kernel.org\:/pub\:/linux\:/utils\:/util-linux/ +Linux Kernel Archive +.UE . |