Free Knowledge Resources


Linux Manual Pages


Free Software * Books

Source Code

Free Media

Linux

lsipc(1)


NAME

   lsipc  -  show  information on IPC facilities currently employed in the
   system

SYNOPSIS

   lsipc [options]

DESCRIPTION

   lsipc shows information on the inter-process  communication  facilities
   for which the calling process has read access.

OPTIONS

   -i, --id id
          Show full details on just the one resource element identified by
          id.  This option needs to be combined  with  one  of  the  three
          resource  options: -m, -q or -s.  It is possible to override the
          default output format for this option with  the  --list,  --raw,
          --json or --export option.

   -g, --global
          Show system-wide usage and limits of IPC resources.  This option
          may be combined with one of the three resource options:  -m,  -q
          or -s.  The default is to show information about all resources.

   -h, --help
          Display help text and exit.

   -V, --version
          Display version information and exit.

   Resource options
   -m, --shmems
          Write information about active shared memory segments.

   -q, --queues
          Write information about active message queues.

   -s, --semaphores
          Write information about active semaphore sets.

   Output formatting
   -c, --creator
          Show creator and owner.

   -e, --export
          Output data in the format of NAME=VALUE.

   -J, --json
          Use the JSON output format.

   -l, --list
          Use  the  list  output format.  This is the default, except when
          --id is used.

   -n, --newline
          Display each piece of information on a separate line.

   --noheadings
          Do not print a header line.

   --notruncate
          Don't truncate output.

   -o, --output list
          Specify which output columns to print.  Use --help to get a list
          of all supported columns.

   -p, --pid
          Show PIDs of creator and last operator.

   -r, --raw
          Raw output (no columnation).

   -t, --time
          Write  time information.  The time of the last control operation
          that changed the access permissions for all facilities, the time
          of  the last msgsnd() and msgrcv() operations on message queues,
          the time of the last shmat() and shmdt()  operations  on  shared
          memory,   and   the  time  of  the  last  semop()  operation  on
          semaphores.

   --time-format type
          Display dates in short, full or  iso  format.   The  default  is
          short,  this  time  format is designed to be space efficient and
          human readable.

EXIT STATUS

   0      if OK,

   1      if incorrect arguments specified,

   2      if a serious error occurs.

SEE ALSO

   ipcrm(1),  ipcmk(1),   msgrcv(2),   msgsnd(2),   semget(2),   semop(2),
   shmat(2), shmdt(2), shmget(2)

HISTORY

   The lsipc utility is inspired by the ipcs utility.

AUTHORS

   Ondrej Oprala ooprala@redhat.com
   Karel Zak kzak@redhat.com

AVAILABILITY

   The  lsipc  command  is part of the util-linux package and is available
   from Linux Kernel  Archive  ftp://ftp.kernel.org/pub/linux/utils/util-
   linux/.



Opportunity


Personal Opportunity - Free software gives you access to billions of dollars of software at no cost. Use this software for your business, personal use or to develop a profitable skill. Access to source code provides access to a level of capabilities/information that companies protect though copyrights. Open source is a core component of the Internet and it is available to you. Leverage the billions of dollars in resources and capabilities to build a career, establish a business or change the world. The potential is endless for those who understand the opportunity.

Business Opportunity - Goldman Sachs, IBM and countless large corporations are leveraging open source to reduce costs, develop products and increase their bottom lines. Learn what these companies know about open source and how open source can give you the advantage.



Free Software


Free Software provides computer programs and capabilities at no cost but more importantly, it provides the freedom to run, edit, contribute to, and share the software. The importance of free software is a matter of access, not price. Software at no cost is a benefit but ownership rights to the software and source code is far more significant.

Free Office Software - The Libre Office suite provides top desktop productivity tools for free. This includes, a word processor, spreadsheet, presentation engine, drawing and flowcharting, database and math applications. Libre Office is available for Linux or Windows.



Free Books


The Free Books Library is a collection of thousands of the most popular public domain books in an online readable format. The collection includes great classical literature and more recent works where the U.S. copyright has expired. These books are yours to read and use without restrictions.

Source Code - Want to change a program or know how it works? Open Source provides the source code for its programs so that anyone can use, modify or learn how to write those programs themselves. Visit the GNU source code repositories to download the source.



Education


Study at Harvard, Stanford or MIT - Open edX provides free online courses from Harvard, MIT, Columbia, UC Berkeley and other top Universities. Hundreds of courses for almost all major subjects and course levels. Open edx also offers some paid courses and selected certifications.

Linux Manual Pages - A man or manual page is a form of software documentation found on Linux/Unix operating systems. Topics covered include computer programs (including library and system calls), formal standards and conventions, and even abstract concepts.


birds banner