07-31-2005
mine is f(Dark, Angel)
f stands for function, as in classic math notation. it takes 2 parameters. "Dark" used to be my handle, and "Angel" is about a girl...
9 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Found this piece of code written in ksh. I have no ideas what do the stuff like ${SRF##*\.} do.
SUFFIX=${SRF##*\.}
if ; then
SUFFIX=""
fi
I have encountered similar expressions in other programs also. Any pointers on where to learn more about these... (1 Reply)
Discussion started by: jyotipg
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2. Post Here to Contact Site Administrators and Moderators
woofie,
Your posts are being deleted because your use of profanity.
I am close to changing your status to read only.
In fact, if you argue with the mods again, I will ban you from these boards.
Neo (1 Reply)
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3. Shell Programming and Scripting
Hi,
whats the difference between $* and $@ in command line arguments to a shell scripts (3 Replies)
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#! /bin/bash
head -5 $1
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read answer
if
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then
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else
echo "invalid answer"
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What i really want this to do is to ask to delete the file or not..it says something wrong... (1 Reply)
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5. Shell Programming and Scripting
#! /bin/bash
USAGE=" | ]
if
then
echo "$USAGE"
exit 1
fi
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do
case $(OPTION)in
a) echo Hi there!
exit 2;;
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shift `expr... (1 Reply)
Discussion started by: nadman123
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6. Shell Programming and Scripting
hi all,
i found NAME=${0##*/} in a script.
i given this coomand in my unix box(presently in ksh).
echo ${0##*/} it returned ksh.
the purpose of the above is to return the shell name or more than that.
do you have any more information like this, please share with me.
one more query... (7 Replies)
Discussion started by: Arunprasad
7 Replies
7. Shell Programming and Scripting
Hi all,
could you please tell me whats this stands
##*_
0##*/
i knew this alone if some more is there please tell me that also. (3 Replies)
Discussion started by: Arunprasad
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can anyone tell me why this code doesn't work how its supposed to, its the hangman game but it doesn't play how its supposed to
#!/bin/bash
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livesgiven="5"
LivesRemain=$livesgiven
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wordfile=words
numwords=0
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{
clear
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Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
1. The problem statement, all variables and given/known data:
ls -ld htdocs
drwxr-x--- 3 root root 8192 2006-11-19 10:41 htdocs
How would a host administrator... (1 Reply)
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LEARN ABOUT SUSE
combinatorics
math::combinatorics(n) Tcl Math Library math::combinatorics(n)
__________________________________________________________________________________________________________________________________________________
NAME
math::combinatorics - Combinatorial functions in the Tcl Math Library
SYNOPSIS
package require Tcl 8.2
package require math ?1.2.3?
::math::ln_Gamma z
::math::factorial x
::math::choose n k
::math::Beta z w
_________________________________________________________________
DESCRIPTION
The math package contains implementations of several functions useful in combinatorial problems.
COMMANDS
::math::ln_Gamma z
Returns the natural logarithm of the Gamma function for the argument z.
The Gamma function is defined as the improper integral from zero to positive infinity of
t**(x-1)*exp(-t) dt
The approximation used in the Tcl Math Library is from Lanczos, ISIAM J. Numerical Analysis, series B, volume 1, p. 86. For "x >
1", the absolute error of the result is claimed to be smaller than 5.5*10**-10 -- that is, the resulting value of Gamma when
exp( ln_Gamma( x) )
is computed is expected to be precise to better than nine significant figures.
::math::factorial x
Returns the factorial of the argument x.
For integer x, 0 <= x <= 12, an exact integer result is returned.
For integer x, 13 <= x <= 21, an exact floating-point result is returned on machines with IEEE floating point.
For integer x, 22 <= x <= 170, the result is exact to 1 ULP.
For real x, x >= 0, the result is approximated by computing Gamma(x+1) using the ::math::ln_Gamma function, and the result is
expected to be precise to better than nine significant figures.
It is an error to present x <= -1 or x > 170, or a value of x that is not numeric.
::math::choose n k
Returns the binomial coefficient C(n, k)
C(n,k) = n! / k! (n-k)!
If both parameters are integers and the result fits in 32 bits, the result is rounded to an integer.
Integer results are exact up to at least n = 34. Floating point results are precise to better than nine significant figures.
::math::Beta z w
Returns the Beta function of the parameters z and w.
Beta(z,w) = Beta(w,z) = Gamma(z) * Gamma(w) / Gamma(z+w)
Results are returned as a floating point number precise to better than nine significant digits provided that w and z are both at
least 1.
BUGS, IDEAS, FEEDBACK
This document, and the package it describes, will undoubtedly contain bugs and other problems. Please report such in the category math of
the Tcllib SF Trackers [http://sourceforge.net/tracker/?group_id=12883]. Please also report any ideas for enhancements you may have for
either package and/or documentation.
math 1.2.3 math::combinatorics(n)