02-12-2007
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hello,
Is there a way to get the current cursor position?
I know "tput sc" saves it. Is there a way to find out the value saved?
Thanks. (0 Replies)
Discussion started by: bestbuyernc
0 Replies
2. HP-UX
Dear all,
How can i get the current cursor position..is thr any command to find the same?
Thanks in Advance
Aneesh (3 Replies)
Discussion started by: aneesha
3 Replies
3. Programming
I want to get the screen width and cursor positions.
When I used curses, all the screen content was cleared.
So Can I use curses to get the screen size without clearing anything in the window?
Or is there any other alternative???
I can use only C or C++. (0 Replies)
Discussion started by: Sreejesh.S
0 Replies
4. UNIX and Linux Applications
Hi to all!
I'm a teacher of maths and physics in an italian high school in Milan, Italy.
I need a simple program that read the position of mouse cursor in function of time and write the coordinates in a text file. The time resolution have to be something like 1/10 sec or better (I have to know... (2 Replies)
Discussion started by: chris75
2 Replies
5. UNIX for Dummies Questions & Answers
Hi All,
In VI editor, to know the line number at any instant we use ctrl+g
Similarly, to know the current coulmn number what shall we use??
If not direct key controls like ctrl+g, Is there any comands that could be executed in colon or ex mode of VI to know the current column position???... (1 Reply)
Discussion started by: ramkrix
1 Replies
6. UNIX for Dummies Questions & Answers
Is there a way of finding the current cursor position (line & column) within AIX (4 Replies)
Discussion started by: gefa
4 Replies
7. Shell Programming and Scripting
hi all,
am trying to modify a ksh script to group server names together depending on the cluster they sit in. currently the script does a
find . -name '*.pid'
to find all running servers and prints out their pids and names.
current output looks something like this :
serverA ... (1 Reply)
Discussion started by: cesarNZ
1 Replies
8. Shell Programming and Scripting
I need to get the cursor position, and put it inside a variable. Problem is, i don't have the tput command, or ncurses.
Apparently I was supposed to try the following:
echo -e '\E
But I don't get a value or anything. Please help. (3 Replies)
Discussion started by: tinman47
3 Replies
9. Shell Programming and Scripting
Hi there.
It's easier to explain this with a pseudo code, I hope this makes sense:
var1=hello
echo $var1
some kind of loop
echo loop counter
done
How do I hold the cursor position immediately behind the last output so I'd get something like:
hello123456789
DOS used to use ","... (5 Replies)
Discussion started by: MuntyScrunt
5 Replies
10. Shell Programming and Scripting
I have a slight problem controlling the cursor position in a Bash terminal window. I have a function ask a question and then wait for an answer which is either 'y' or 'n' or a carriage return. Whenever the user enters anything else it just erases the answer and waits for the next one. However, the... (23 Replies)
Discussion started by: Ralph
23 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)