Ok i have a router, which my sparc 5 is connected to. I can acess the router webpage (192.168.0.1). But I cant access the internet.
When i use sys-unconfig i enter my ip address fine then i click none for when it asks me for DNS info because I dont have a domain. I was told i can manually change... (10 Replies)
Hello,
I'm brand new to this forum. I am working on my first Bash shell script. We were given an exercise to get ready for the real assignment. I could use some help.
The exercise is to "set two variables (i. e., file1 & file2) on the command line to the paths of the text files. We are to... (1 Reply)
I need to realize the user login name after he/she used the 'su' command to log under another name (for specific privileges.)
I am on SunOS v5.6, and here by now I could not find a way to figured it out.
In another Thread I've get an advise from Linux user to use 'ps afxj' that display a... (3 Replies)
The title says everything.
I'm wondering how we call in English the person who builds a computer.
I mean instead of buying a branded computer like dell or toshiba, how do you call the guy who assembles computers from pieces of various suppliers.
Thanks for your help
Santiago (8 Replies)
Discussion started by: chebarbudo
8 Replies
LEARN ABOUT REDHAT
pbmreduce
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)