07-14-2011
8 More Discussions You Might Find Interesting
1. Solaris
hi everybody,
my name is samir, i m from delhi,india. i m a student in solaris. just few days ago i had completed my course. can anybody tell me the possible interview questions in solaris. (1 Reply)
Discussion started by: samir_sinu
1 Replies
2. UNIX for Advanced & Expert Users
We run WebSphere and by default it wants to install everything under /usr. While I can understand the default (everyone has a /usr) I would like to move this over to a dedicated volume group called apps and then setup my lv's and fs's here. Our WebSphere Admin doesn't like this because apparently... (1 Reply)
Discussion started by: scottsl
1 Replies
3. UNIX for Dummies Questions & Answers
what distros have you selected in the past, for which applications, and
why did you choose them? Would you make the same choices again,
knowing what you know now?
Any help will be really appreciated!! (2 Replies)
Discussion started by: choco4202002
2 Replies
4. Solaris
Hi guys,
Interview Questions:-
1) There are 2 ways to create a slice in Solaris
1) we can create using format command but there say other than format 1more within sec. we can create a slice.
2) ?
2) How to create a temperory SWAP Space
3) How to check the Devices from the... (2 Replies)
Discussion started by: kurva
2 Replies
5. UNIX for Advanced & Expert Users
Hello there....i am a final year comp science student.......i am thinking of doing my project on unix platform......which one do u suggest?thanx in advance... (3 Replies)
Discussion started by: theprasad1990
3 Replies
6. What is on Your Mind?
A discussion elsewhere got me thinking: What where the most insane/amusing/strange interview questions or answers you got/gave? Not overly technical stuff, but questions that made you go "Huh?" (And keeping with this forums main Idea: "No technical Q&A")
I'll start... (6 Replies)
Discussion started by: pludi
6 Replies
7. UNIX for Dummies Questions & Answers
A process(apache/webservice) is continually writing a log(it is a single log, there are no several logs with different file names) onto a unix system.
the file system is filling up. How do you handle the situation.
Is there a way to handle this situation without killing the parent process.(... (1 Reply)
Discussion started by: ramky79
1 Replies
8. What is on Your Mind?
Hi, I'm new to the forums!
I'm currently in the process of changing careers back into IT after a 2 year hiatus. I had an interview at a big company for a Linux Systems Administrator role and have been called back for a second interview in which they are going to grill me with Linux questions.
... (1 Reply)
Discussion started by: Barnicle
1 Replies
LEARN ABOUT DEBIAN
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)