You are correct of course; the matching is greedy, and tries its darndest to find a match, so using a negation between wildcards will find a match if there is a way to match it, regardless of the other characters. So the label "pure alpha" is wrong; it should be "alpha + possibly numbers", or the logic should be changed to do additional cases within that case statement.
How can I compare two integer values which is stored in char pointers?
suppose I have char *a and char *b having values 10 and 20. how can i find the shorter value? (1 Reply)
This is the code:
while test 1 -eq 1
do
read a
$a
if test $a = stop
then
break
fi
done
I read a command on every loop an execute it.
I check if the string equals the word stop to end the loop,but it say that I gave too many arguments to test.
For example echo hello.
Now the... (1 Reply)
Hi guys, I asked for help on programming forums and no one didn't helped me so I ask for help here. I am playing with some tasks from my book and I can't figure where did I get wrong.
From the first program I get a blank screen, program won't generate 10*10 matrix.
And second problem is I... (6 Replies)
Hi folks,
I am self-learning as I can
I have a script that has read a file into an array.
I can read out each line in the array with the code:
for INDEX in {0..$LENGTH} ## $LENGTH was determined at the read in
do
echo "${data}"
done
What I need to do is test the first char... (2 Replies)
Working out a small problem, I have a need of a Perl snippet which might look something like this:
use integer;
...
if ($changingNumber / 2)
{
do something;
}
else
{
do something else;
}
...
What I want to happen is for "if" to resolve as "true" every time a whole... (3 Replies)
Discussion started by: LinQ
3 Replies
LEARN ABOUT REDHAT
ximtoppm
ximtoppm(1) General Commands Manual ximtoppm(1)NAME
ximtoppm - convert an Xim file into a portable pixmap
SYNOPSIS
ximtoppm [--alphaout={alpha-filename,-}] [ximfile]
DESCRIPTION
Reads an Xim file as input. Produces a portable pixmap as output. The Xim toolkit is included in the contrib tree of the X.V11R4 release.
OPTIONS --alphaout=alpha-filename
ximtoppm creates a PGM (portable graymap) file containing the alpha channel values in the input image. If the input image doesn't
contain an alpha channel, the alpha-filename file contains all zero (transparent) alpha values. If you don't specify --alphaout,
ximtoppm does not generate an alpha file, and if the input image has an alpha channel, ximtoppm simply discards it.
If you specify - as the filename, ximtoppm writes the alpha output to Standard Output and discards the image.
Actually, an Xim image can contain an arbitrary fourth channel -- it need not be an Alpha channel. ximtoppm extracts any fourth
channel it finds as described above; it doesn't matter if it is an alpha channel or not.
See pnmcomp(1) for one way to use the alpha output file.
All options can be abbreviated to their shortest unique prefix.
SEE ALSO pnmcomp(1), ppm(5)AUTHOR
Copyright (C) 1991 by Jef Poskanzer.
April 2, 2000 ximtoppm(1)