02-12-2012
8 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
I have a parent that is passing data to child A and then child A has to process it and pass to child B. I am able to pass the data to child A but am not able to pass it to child B. Child B seems to only be receiving the last data instead of the whole data.
I saw one example in a book but it uses... (1 Reply)
Discussion started by: scmay
1 Replies
2. Programming
Hi,
The description and the context of the mechanism that i require is as follows:
There is an application communicating with a protocol stack binary. There is a TCP socket communication between the two.
Now, the stack is pumping up data to the Application such that the receiving buffer of... (2 Replies)
Discussion started by: saptarshi
2 Replies
3. Shell Programming and Scripting
I have a shell script.
How can use some kind of locking mechanism to ensure that the script is not being executed by two people
at the same time? (3 Replies)
Discussion started by: tjay83
3 Replies
4. AIX
Hi all,
on aix,whether have udev or devfs mechanism?
thanks! (4 Replies)
Discussion started by: anonys
4 Replies
5. Programming
Hi guys, I'm new to Linux and Unix I have just simple code . But I don't know why it doesn't work ..
But, the outputfile is Blank.. I don't understand why.. Please help me.. Thank you very much
P.S: sorry, I don't know how to edit this post clearly.. it's hard to read.. Please try.. (2 Replies)
Discussion started by: thanh_sam_khac
2 Replies
6. Programming
OIOIC is a completely new object-oriented mechanism for the C programming language.
Please download the "OIOIC-Primer-2nd-Edition-English.tar.gz". (the English version of << OIOIC Primer >> )
http://code.google.com/p/oioic/downloads/list
Welcome your advice!
Using OIOIC, you can describe... (7 Replies)
Discussion started by: pervise.zhao
7 Replies
7. Solaris
I was asked to look into a problem with a Sun Netra 440 in another department. On the server in question, the relevant 'uname -a' information is, "SunOS host1 5.9 Generic_118558-16 sun4u sparc SUNW,Netra-440". That information aside, while the other admin is logged into the ALOM, these errors are... (0 Replies)
Discussion started by: Borealis
0 Replies
8. Shell Programming and Scripting
What if the operating systems would not use any ipc mechanism in order to exchange the datas with each other,which technique could be an alternative for messaging between the processes?Do you guys think using the vfork () system call to duplicate processes is a logical solution for this problem? (4 Replies)
Discussion started by: helltrex
4 Replies
sema(5) File Formats Manual sema(5)
NAME
sema - enable or disable System V IPC semaphores at boot time
DESCRIPTION
The tunable is obsolete. The System V IPC semaphore subsystem is always enabled.
Overview
System V IPC is comprised of mechanisms for arbitrary processes to send and receive data messages, share virtual address space and use sem-
aphores to synchronize execution.
A System V semaphore is a synchronization method for user processes to synchronize or serialize access to common data and resources. Each
semaphore "set" has an ID, but each set can contain one or more independent semaphores.
Semaphore sets are created or initially accessed through using an application-specified "key", which can be generated by Operations on the
set are performed through and Semaphore sets are removed through or the command.
WARNINGS
Installation of optional kernel software, from HP or other vendors, may cause changes to tunable parameter values. After installation,
some tunable parameters may no longer be at the default or recommended values. For information about the effects of installation on tun-
able values, consult the documentation for the kernel software being installed. For information about optional kernel software that was
factory installed on your system, see at
AUTHOR
was developed by AT&T.
SEE ALSO
ipcs(1), ipcrm(1), semget(2), semop(2), semctl(2), semaem(5), semmni(5), semmns(5), semmnu(5), semmsl(5), semume(5), semvmx(5),
sysv_hash_locks(5).
Tunable Kernel Parameters sema(5)