11-09-2009
Thanks a lot for your suggestions
.
10 More Discussions You Might Find Interesting
1. Programming
Here is my problem. I don't know make this redirection thing work. The output file (called output.c) looks like this
#include<stdio.h>
int main()
{
int k;
int m;
print f("%d\n", k);
printf("%d\n", m);
return 0;
}
the input file(called input.c) is this
#include<stdio.h>
int... (2 Replies)
Discussion started by: Shallon1
2 Replies
2. Shell Programming and Scripting
Hi,
The code below works, it's a part of a bash shell script that serve to search a pattern $pattern_da_cercare in the files contained in a directory $directory_iniziale.
Now the proble is:
How can I redirect stderr to a file?
PS: so I want to redirect ALL the errors to a file.
I tryed... (9 Replies)
Discussion started by: DNAx86
9 Replies
3. Web Development
Hello,
I am currenlty using a link to go back to previous page in Perl-CGI.
Now I want to auto redirect the page after 5 seconds. Can anybody help!!!! (1 Reply)
Discussion started by: gentleDean
1 Replies
4. Shell Programming and Scripting
I have a csh script which I am using to run a program
set data = $argv
set inmod = $argv
set nxz = $argv
# Remove the file extension .pmod
set data = ` echo $data | awk 'BEGIN { FS=".dat" } { print $1 }' `
set inmod = ` echo $inmod | awk 'BEGIN { FS=".vmod" } { print... (8 Replies)
Discussion started by: kristinu
8 Replies
5. UNIX for Dummies Questions & Answers
Hello,
my C application under unix runs in redirecting stdin to a file.
Example:$appli1 <file1. This application waits often on a scanf().
But I would temporarely reassign stdin at the keyboard for waiting a user's answer. So I thought to add system("appli2"); in the code of appli1. In its... (4 Replies)
Discussion started by: cypleen
4 Replies
6. UNIX for Dummies Questions & Answers
Hi Guys,
I m new to UNIX and new to this forum. Was wondering if someone can help me understand redirection (standard input output pipeline etc)
for starters, not too sure what this would mean
who | sort > sortedfile | pr | lp
im starting to understand common commands but when throwing... (2 Replies)
Discussion started by: jmack123
2 Replies
7. Shell Programming and Scripting
Hello everyone,I'm reading a book and there's code fragment:
exec 3>&1
ls -l 2>&1 >&3 3>&- | grep bad 3>&-
exec 3>&-
It says that the red part of that code does not close fd 3 but the green does close the fd 3.I can't understand that.....Why?Any predicate will be appreciated.:) (18 Replies)
Discussion started by: homeboy
18 Replies
8. Shell Programming and Scripting
Hello All,
I am using the below script to gather various tools running by the user, we have more than 100 tools running on the server so my challenge is to redirect memory & cpu load to the file with the name of the tool.so am using the below script i am stucking how to redirect to the file... (2 Replies)
Discussion started by: ajaincv
2 Replies
9. UNIX for Dummies Questions & Answers
explain the redirections 1>, 2>, 3>, .....
and 1< ,2<,3<.....
where we use these things
thanks
Thread moved from AIX forum (2 Replies)
Discussion started by: tsurendra
2 Replies
10. Shell Programming and Scripting
At the moment I have the following code which visits the site then saves the page:
$req = HTTP::Request->new(POST => $url . '/search.php');
$data = $ua->request($req)->decoded_content;
open(HTMLfile, '>hello.html'); print HTMLfile $data; close(HTMLfile);
From the page it saves theres a URL,... (6 Replies)
Discussion started by: AndrewTwain
6 Replies
pbmreduce(1) General Commands Manual pbmreduce(1)
NAME
pbmreduce - read a portable bitmap and reduce it N times
SYNOPSIS
pbmreduce [-floyd|-fs|-threshold ] [-value val] N [pbmfile]
DESCRIPTION
Reads a portable bitmap as input. Reduces it by a factor of N, and produces a portable bitmap as output.
pbmreduce duplicates a lot of the functionality of pgmtopbm; you could do something like pnmscale | pgmtopbm, but pbmreduce is a lot
faster.
pbmreduce can be used to "re-halftone" an image. Let's say you have a scanner that only produces black&white, not grayscale, and it does a
terrible job of halftoning (most b&w scanners fit this description). One way to fix the halftoning is to scan at the highest possible res-
olution, say 300 dpi, and then reduce by a factor of three or so using pbmreduce. You can even correct the brightness of an image, by
using the -value flag.
OPTIONS
By default, the halftoning after the reduction is done via boustrophedonic Floyd-Steinberg error diffusion; however, the -threshold flag
can be used to specify simple thresholding. This gives better results when reducing line drawings.
The -value flag alters the thresholding value for all quantizations. It should be a real number between 0 and 1. Above 0.5 means darker
images; below 0.5 means lighter.
All flags can be abbreviated to their shortest unique prefix.
SEE ALSO
pnmenlarge(1), pnmscale(1), pgmtopbm(1), pbm(5)
AUTHOR
Copyright (C) 1988 by Jef Poskanzer.
02 August 1989 pbmreduce(1)