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Message queue: msgsnd failed : Invalid argument

Can anyone please help me to point out as what is the error in my program? Thanks in advance, kingsmasher1 Output: msgsnd failed: Invalid argument Answer You do not have enough space in your buf.mtext (15 characters) for “This is a test message” (23 characters plust one more for a NUL terminator). I’d say there’s a good chance that may

Installing a graphics library on linux

I’m not a linux expert, and I’m trying to install a 2D graphics library on Ubuntu 10.10. I need to make a 2D display and after a little online research, GooCanvas seems like it will fit the bill. I’m frustrated because it simply won’t install and I don’t get what I am supposed to do. Here’s what I did. ‘make;

Force a shell script to fflush

I was wondering if it was possible to tell bash that all calls to echo or printf should be followed up by a subsequent call to fflush() on stdout/stderr respectively? A quick and dirty solution would be to write my own printf implementation that did this and use it in lieu of either built in, but it occurred to me

How can I uninstall or upgrade my old node.js version?

some time ago I have installed node.js on my Ubuntu system. with the following steps (dump of my history): My Version is v0.3.2-pre. Please, is there a clean way to get a new version by uninstall/install or upgrade? I have not much experience with make or git. Thanks Answer Do the exact same thing again. The new binary will be

How to open serial port in linux without changing any pin?

Posix requires changing RTS pin on port opening. I want a way to avoid it. Answer Having the same problem, I’d give it a try by patching the ftdi_sio kernel driver. You just need to uncomment a small piece of code in ftdi_dtr_rts() like this: and the RTS handshake line is not longer changed upon open() call. Note, that the

How to load balance a php application?

I am looking for guides, advice, or samples of how to load balance a php application. My setup is Ubuntu 10.04 and PHP 5.3. I have never load balanced servers before and I am looking for any help that is offered. Update: It’s a web application that is expected to have a few hundred users using it at the same

Format of /dev/input/event*

What is the “format” of the character devices located in /dev/input/event*? In other words, how can I decode the character stream? A Python example would be greatly appreciated. Answer Right here in the Input.py module. You’ll also need the event.py module.

Memcached not showing up in phpinfo()

I’ve installed libmemcached and memcached pecl extension for php and for some reason it’s not installing correctly? i’ve got memcached.so in /usr/lib64/php/ with the right permissions and libmemcache.so in /usr/local/lib/ Everything seemed to build correctly without error, and I restarted apache? i also have the daemon installed. I somehow easily got the Memcache class easily installed for php before, but

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