finding out the library of DSNUTILB utility program in JCL - mainframe

I'm having trouble with the library of DSNUTILB. I dont know what library it belongs to. I've been surfing the net but can't seem to find the answer to this. Can anyone help out? How to find the library? Thanks.

DSNUTILB is delivered by default in the SDSNLOAD dataset by IBM. Look in the appropriate SDSNLOAD dataset that is allocated by your DB2 subsystem.

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Linux Document about tracepoint

In Ubuntu (or else linux system), there are some directory in /sys/kernel/debug/tracing/events, but I don't know what these directory mean. For example, /sys/kernel/debug/tracing/events/block/block_bio_backmerge, I want some documents to describe this what they mean. Can u give me some relevant documents or some other advice to learn.
Thx.
It's easy to get by google, like this. And the brendangregg's blog is really deserve to read.

SVM in Point Cloud Library

Does anyone know the difference between:
pcl/ml/svm.h VS pcl/ml/svm_wrapper.h
Also does anyone know if there is a official tutorial for this build in SVM lib?
I tried to search a lot but could not find anything except forum threads.
If anyone looking at this svm_wrapper.h includes the svm.h. I am not sure why it has this structure. I found a semi-tutorial here.

what algorithms does AlchemyAPI use?

I'm trying to develop something that extract keywords from a text. I know AlchemyAPI work best for this. Now i wanna know what algorithms AlchemyAPI used so that i can implement code of it on my own. Does anyone has any idea about it. Please share it. Thanks in advance.
I have no idea what specific algorithms AlchemyAPI uses (I'm guessing it is on the extreme end of proprietary), but the Stanford NLP has a lot of information and code that may be useful:
http://www-nlp.stanford.edu/software/lex-parser.shtml

Linux Kernel Programming, how to get information?

I'm a newbie on Linux programming and I don't know exactly where I can get information of functions for example. There is a directory Documentations in my sources. But I can't find semaphore stuff there for example. Is there a documentation for all the function somewhere in the sources? Or not obligatorily?
The Linux Kernel Newbies site is a good point to start.
And, of course, the kernel itself is the best reference. To get started. Also have a look at kernel.org/doc. For semaphores, look at this page here.

Does IronRuby support Attributes?

I searched everywhere from google to this site but seems no answer for it. Does anyone know if IronRuby supports clr class attributes? If yes, how?
Thanks in advance.
There's no way to apply CLR attributes in IronRuby today. IronPython support it experimentally with its clrtype module, which uses its own way of overriding the underlying .NET class for a Python object.
If one would want to implement this in IronRuby themselves, it'd be a large undertaking, but not impossible. If anyone is interesting, please ask about it on the mailing list to get started.

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