04-08-2010
9 More Discussions You Might Find Interesting
1. Programming
Hi all,
I've a structure let's say
typdef struct a { int a; int b; char* string} b;
I need to make the function smth like readdir(), returning everytime it's called pointer to the next structure. Let's say functions would read the next file in the directory and all the permitions put it in... (2 Replies)
Discussion started by: solvman
2 Replies
2. UNIX for Dummies Questions & Answers
What is a good and easy to set up program on Unix FreeBSD for playing streaming MP3s. Where can I get it and how do I install it? This is FreeBSD 4.3.
Thanx. (2 Replies)
Discussion started by: ByondF1
2 Replies
3. IP Networking
If you have used snort to build a folder list of computers IP and their packets is there a tcp stream follow application that can be used to re-build the packets? Like ethereal? (1 Reply)
Discussion started by: macdonto
1 Replies
4. Programming
Hi All,
I am trying to read data from two files and then compare them and only print the records on the screen that have a same ID.i.e TAGNO =CUSTOMERNO
For Eg
My Input Files are (a) Transaction (b) Customer detail
The data in file a is like:
TagNo Date Time Station... (0 Replies)
Discussion started by: rooh
0 Replies
5. UNIX for Advanced & Expert Users
:D i have searched through several sites on google for a match up for sed that would go indepth into the workings of this interactive edditor.. I use it every day and it is the edditor of my choice so i know a few tricks but would very much like to get into the more complex uses of sed.. all the... (2 Replies)
Discussion started by: moxxx68
2 Replies
6. Shell Programming and Scripting
Hi Master,
I've log in here
then try parsing log become :
3GPP-IMSI,Calling-Station-Id
528111500111614,6738790448
528111500068173,6738769831
.....
it is possible to use awk?
cause i 've try
awk '
/\Accounting\ /{f=1}
f && /\3GPP-IMSI \:\ String Value\ /{imsi=$4}
f &&... (1 Reply)
Discussion started by: bowbowz
1 Replies
7. Ubuntu
Hello, I have Ubuntu 64 bit 9.04 install dual boot
I can't see stream videos through Opera
I couldnt see it in Firefox did this:
"sudo apt-get install ubuntu-restricted-extras flashplugin-nonfree"
Now I can see it in firefox but not in Opera
Should not care and just use just Firefox.
thanks (0 Replies)
Discussion started by: Pitroadrush
0 Replies
8. UNIX for Dummies Questions & Answers
Hello Everyone,
The situation is:
$ alias rm="sh abc.sh"
#abc.sh:
read input
echo "The input was: " $input
$ rm xyz.txt
should return
"The input was: xyz.txt"
Here, I want the alias "rm" to execute the file "abc.sh", where "abc.sh" should take "xyz.txt"... (1 Reply)
Discussion started by: qasim
1 Replies
9. IP Networking
Hello,
i have an Ubuntu 12.04 with LXDE desktop
+ i have command line CentOS linux backup server with my movies and music on it
i want to achieve this: easilly play (stream) videos and music from my backup server while working on my Ubuntu LXDE desktop.
How to achieve it and is that... (1 Reply)
Discussion started by: postcd
1 Replies
LEARN ABOUT REDHAT
pdl::philosophy
PHILOSOPHY(1) User Contributed Perl Documentation PHILOSOPHY(1)
NAME
PDL::Philosophy -- what's behind PDL?
DESCRIPTION
This is an attempt to summarize some of the common spirit between pdl developers in order to answer the question "Why PDL"? If you are a
PDL developer and I haven't caught your favorite ideas about PDL, please let me know!
An often-asked question is: Why not settle for some of the existing systems like Matlab or IDL or GnuPlot or whatever?
Major ideas
The first tenet of our philosophy is the "free software" idea: software being free has several advantages (less bugs because more people
see the code, you can have the source and port it to your own working environment with you, ... and of course, that you don't need to pay
anything).
The second idea is a pet peeve of many: many languages like matlab are pretty well suited for their specific tasks but for a different
application, you need to change to an entirely different tool and regear yourself mentally. Not to speak about doing an application that
does two things at once... Because we use Perl, we have the power and ease of perl syntax, regular expressions, hash tables etc at our
fingertips at all times. By extending an existing language, we start from a much healthier base than languages like matlab which have
grown into existence from a very small functionality at first and expanded little by little, making things look badly planned. We stand by
the Perl sayings: "simple things should be simple but complicated things should be possible" and "There is more than one way to do it"
(TIMTOWTDI).
The third idea is interoperability: we want to be able to use PDL to drive as many tools as possible, we can connect to OpenGL or Mesa for
graphics or whatever. There isn't anything out there that's really satisfactory as a tool and can do everything we want easily. And be por-
table.
The fourth idea is related to PDL::PP and is Tuomas's personal favorite: code should only specify as little as possible redundant info. If
you find yourself writing very similar-looking code much of the time, all that code could probably be generated by a simple perl script.
The PDL C preprocessor takes this to an extreme.
Minor goals and purposes
We want speed. Optimally, it should ultimately (e.g. with the Perl compiler) be possible to compile PDL::PP subs to C and obtain the top
vectorized speeds on supercomputers. Also, we want to be able to calculate things at near top speed from inside perl, by using dataflow to
avoid memory allocation and deallocation (the overhead should ultimately be only a little over one indirect function call plus couple of
ifs per function in the pipe).
We want handy syntax. Want to do something and cannot do it easily? Tell us about it...
We want lots of goodies. A good mathematical library etc.
AUTHOR
Copyright(C) 1997 Tuomas J. Lukka (lukka@fas.harvard.edu). Redistribution in the same form is allowed but reprinting requires a permission
from the author.
perl v5.8.0 1999-12-09 PHILOSOPHY(1)