05-09-2014
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10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
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
2. Programming
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
3. UNIX for Advanced & Expert Users
Hi,
I would like to setup a FOR loop script to find out all the existing linux workstation in the network w/ ip address, hostname and linux version.
I created a basic FOR loop script:
for i in $(seq 1 254)
do
echo 10.72.169.$i >> result
ssh -o ConnectTimeout=3 root@10.72.169.$i... (14 Replies)
Discussion started by: beeloo
14 Replies
4. AIX
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
5. Solaris
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
6. Shell Programming and Scripting
Hi, let say i have 2 log files(they are below) dhcp and radius. What i need is to put the information to a file just from good connections ( Auth: Login OK ) others just ignore. And the information should look like: time, login name, mac, ip, server. But the trouble is that from radius log i get... (10 Replies)
Discussion started by: wrwe
10 Replies
7. Programming
I need some help to write a C++ code that read and write the register of a sequencer. I have to make a code that relate the objects with the physical address but I am a bit confuse. Could someone suggest me how to proceed? in which parts do I split the code?
thanks (1 Reply)
Discussion started by: silviafisica
1 Replies
8. AIX
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
9. Solaris
How to clear IPCS queue count in server? (2 Replies)
Discussion started by: Arasu123
2 Replies
10. UNIX for Advanced & Expert Users
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
IPCS(1) BSD General Commands Manual IPCS(1)
NAME
ipcs -- report System V interprocess communication facilities status
SYNOPSIS
ipcs [-abcmopqstMQST] [-C system] [-N core]
DESCRIPTION
The ipcs program provides information on System V interprocess communication (IPC) facilities on the system.
The options are as follows:
-a Show the maximum amount of information possible when displaying active semaphores, message queues, and shared memory segments. (This
is shorthand for specifying the -b, -c, -o, -p, and -t options.)
-b Show the maximum allowed sizes for active semaphores, message queues, and shared memory segments. The ``maximum allowed size'' is
the maximum number of bytes in a message on a message queue, the size of a shared memory segment, or the number of semaphores in a
set of semaphores.
-c Show the creator's name and group for active semaphores, message queues, and shared memory segments.
-m Display information about active shared memory segments.
-o Show outstanding usage for active message queues, and shared memory segments. The ``outstanding usage'' is the number of messages in
a message queue, or the number of processes attached to a shared memory segment.
-p Show the process ID information for active semaphores, message queues, and shared memory segments. The ``process ID information'' is
the last process to send a message to or receive a message from a message queue, the process that created a semaphore, or the last
process to attach or detach a shared memory segment.
-q Display information about active message queues.
-s Display information about active semaphores.
-t Show access times for active semaphores, message queues, and shared memory segments. The access times is the time of the last con-
trol operation on an IPC object, the last send or receive of a message, the last attach or detach of a shared memory segment, or the
last operation on a semaphore.
-C system
Extract the name list from the specified system instead of the default ``/netbsd''.
-M Display system information about shared memory.
-N core
Extract values associated with the name list from the specified core instead of the default ``/dev/kmem''. and semaphores.
-Q Display system information about messages queues.
-S Display system information about semaphores.
-T Display system information about shared memory, message queues and semaphores. (This is shorthand for specifying the -M, -Q, and -S
options.)
If none of the -M, -m, -Q, -q, -S, -s, or -T options are specified, information about all active IPC facilities is listed.
RESTRICTIONS
System data structures may change while ipcs is running; the output of ipcs is not guaranteed to be consistent.
FILES
/dev/kmem default kernel memory
/netbsd default system name list
SEE ALSO
ipcrm(1), shmat(2), shmctl(2), shmdt(2), shmget(2)
AUTHORS
Thorsten Lockert <tholo@sigmasoft.com>
BUGS
This manual page is woefully incomplete, because it does not at all attempt to explain the information printed by ipcs.
BSD
March 21, 2004 BSD