Linux and UNIX Man Pages

Linux & Unix Commands - Search Man Pages

ipcs(8) [redhat man page]

IPCS(8) 						     Linux Programmer's Manual							   IPCS(8)

NAME
ipcs - provide information on ipc facilities SYNOPSIS
ipcs [ -asmq ] [ -tclup ] ipcs [ -smq ] -i id ipcs -h DESCRIPTION
ipcs provides information on the ipc facilities for which the calling process has read acccess. The -i option allows a specific resource id to be specified. Only information on this id will be printed. Resources may be specified as follows: -m shared memory segments -q message queues -s semaphore arrays -a all (this is the default) The output format may be specified as follows: -t time -p pid -c creator -l limits -u summary SEE ALSO
ipcrm(8) AUTHOR
krishna balasubramanian (balasub@cis.ohio-state.edu) Linux 0.99 9 October 1993 IPCS(8)

Check Out this Related Man Page

IPCS(1) 							   User Commands							   IPCS(1)

NAME
ipcs - show information on IPC facilities SYNOPSIS
ipcs [options] DESCRIPTION
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. 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. -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. -a, --all Write information about all three resources (default). Output formats Of these options only one takes effect: the last one specified. -c, --creator Show creator and owner. -l, --limits Show resource limits. -p, --pid Show PIDs of creator and last operator. -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(2) and msgrcv(2) operations on message queues, the time of the last shmat(2) and shmdt(2) operations on shared mem- ory, and the time of the last semop(2) operation on semaphores. -u, --summary Show status summary. Representation These affect only the -l (--limits) option. -b, --bytes Print sizes in bytes. --human Print sizes in human-readable format. SEE ALSO
ipcmk(1), ipcrm(1), msgrcv(2), msgsnd(2), semget(2), semop(2), shmat(2), shmdt(2), shmget(2) CONFORMING TO
The Linux ipcs utility is not fully compatible to the POSIX ipcs utility. The Linux version does not support the POSIX -a, -b and -o options, but does support the -l and -u options not defined by POSIX. A portable application shall not use the -a, -b, -o, -l, and -u options. AUTHOR
Krishna Balasubramanian <balasub@cis.ohio-state.edu> AVAILABILITY
The ipcs command is part of the util-linux package and is available from Linux Kernel Archive <https://www.kernel.org/pub/linux/utils/util- linux/>. util-linux July 2014 IPCS(1)
Man Page

14 More Discussions You Might Find Interesting

1. Programming

fork() and IPC

Hey all. I recently ported a multithreaded program from WinNT to LINUX using pthreads. Everything works fine, except that it turns out the drivers for the hardware I'm working with aren't thread safe. So, now I have to find a way to make this multi-process instead of multi-threaded. I just... (1 Reply)
Discussion started by: TelePlayer
1 Replies

2. UNIX for Dummies Questions & Answers

ipcs command

Does anyone know how to set the variables with the ipcs command? I need to set the following variables: Shared memory segments message queues semaphore arrays all of these (1 Reply)
Discussion started by: Deuce
1 Replies

3. Programming

System V and POSIX IPCs

I am using SUN 0S 5.7. My application has a dozen programs running in this machine, each instance of a program having 2 POSIX message queues for itself. Totally around 90 POSIX message queues. Another small application uses a SYSTEM V shared memory and a message queue. We face a problem... (1 Reply)
Discussion started by: Deepa
1 Replies

4. Programming

ipcs shows no result in cygwin

Hi, With reference to the thread below: https://www.unix.com/showthread.php?s=&threadid=13247 I have the same program on Cygwin ( unfortuantely win ;( ) My program runs ( offcourse with undesired output) The semget does not give any error, tho I have trapped in case if there is one.... (0 Replies)
Discussion started by: linuxpenguin
0 Replies

5. AIX

ipcs command with out output

hello i'm running on aix 5300-08-02-0822 hacmp 4 when i run ipcs command there is nio output. some one got this problem? best regards ariec (1 Reply)
Discussion started by: ariec
1 Replies

6. Solaris

ipcs Help

hi, I need help with ipcs command on Solaris. What does it do and what are options b,m,o,q does. Here is the sample output of ipcs -oq and ipcs -bm IPC status from <running system> as of Sun Sep 7 23:07:59 GMT 2008 T ID KEY MODE OWNER GROUP CBYTES QNUM... (4 Replies)
Discussion started by: krabu
4 Replies

7. AIX

ipcs -m displaying empty

I am trying to run myApplication which allocates Some amount of shared memory at startup. It failed because not available shared memory are available. But when i ran, ipcs -m it is displaying empty(i.e no shared memory allocated in system.) Why "ipcs -m" is displaying empty ? ... (5 Replies)
Discussion started by: ashokd001
5 Replies

8. UNIX for Advanced & Expert Users

Question on output of ipcs command

Hi, I read the ipcs man page and am still very confused. Basically, I just want to know whether the output from the ipcs command below means these are the current "TOTAL" memory usage in bytes on the server? Is this correct? Thanks in advance. ipcs command output below: # ipcs... (2 Replies)
Discussion started by: newbie_01
2 Replies

9. Solaris

Anyone help to interpretate os statistics

Hi, Can anyone help me to explain following statistics of my unix box. /usr/sbin/swap -l swapfile dev swaplo blocks free /dev/dsk/c4 118,771 16 33560432 33319776 /dev/dsk/c4 118,763 16 33560432 33327184 /usr/sbin/swap -s total: 13429368k bytes allocated + 9830880k reserved =... (9 Replies)
Discussion started by: giteshtrivedi
9 Replies

10. Programming

Error retrieving value from IPC shared memory

Assume in 1.txt file ,i have saved 32 writer.c ----------- #include <sys/types.h> #include <sys/ipc.h> #include <sys/shm.h> #include <stdio.h> #include<stdlib.h> #include<fcntl.h> int main(){ int shm_id; key_t mem_key; int *shm_ptr; int fd=open("1.txt",O_CREAT|O_RDWR,0777); mem_key =... (2 Replies)
Discussion started by: subi09
2 Replies

11. Solaris

IPCS COUNT clear

How to clear IPCS queue count in server? (2 Replies)
Discussion started by: Arasu123
2 Replies

12. Solaris

8 character limit for ipcs command , any way to increase # of chars ?

Hello All, We have a working script which identifies and kills ipcs resources which havent been correctly killed during normal shutdowns. It is working fine and dandy however there are some issues now. Environment: SunOS 5.10 Generic_148888-03 sun4u sparc SUNW,SPARC-Enterprise ... (4 Replies)
Discussion started by: icalderus
4 Replies

13. UNIX for Advanced & Expert Users

Ipcs do not show MODE

The ipcs -q command output includes a MODE column which tells user if the process is waiting on read or write on the queue. I used this in scripts on many systems (Solaris, AIX, SCO) a snippet from man MODE (all) The facility access modes and flags: The mode consists of 11... (2 Replies)
Discussion started by: migurus
2 Replies

14. UNIX for Advanced & Expert Users

How to relate ipcs id or cpid to process?

Hi, we have multiple database instances running on solaris server like db1, db2 and db3. Below shown ipcs -pmb shared memory segment output. Using cpid value I want to relate to the database instances db1, db2 and db3. Please let me know how to do this? $ ipcs -pmb IPC status from <running... (9 Replies)
Discussion started by: baladelaware73
9 Replies

Featured Tech Videos