07-20-2011
10 More Discussions You Might Find Interesting
1. UNIX for Advanced & Expert Users
i have create a Directory with "$@#$%" .
After creating a Directory, put ls command display "#$%" .
Why? (2 Replies)
Discussion started by: lakshmananindia
2 Replies
2. UNIX for Dummies Questions & Answers
Hi, I came across this strange error while creating a directory using mkdir command.
The command created the directory but it returned an error code 512.
Could some one tell me why this error popped up and what exactly does an error code 512 infer? (11 Replies)
Discussion started by: shreyasjothish
11 Replies
3. Shell Programming and Scripting
I have list of files named file_username_051208_025233.log. Here 051208 is the date and 025233 is the time.I have to run thousands of files daily.I want to put all the files depending on the date of running into a date directory.Suppose if we run files today they should put into 05:Dec:08... (3 Replies)
Discussion started by: ravi030
3 Replies
4. Shell Programming and Scripting
Hi all,
I'd like to create a directory tree, and define from stdin how many levels deep and how many directories in each level should be created.
What I wrote does not work properly:#!/bin/bash
#set -x
read -p " What root directory? " rootDir
&& { /bin/rm -R $rootDir; mkdir $rootDir; } ||... (2 Replies)
Discussion started by: NBaH
2 Replies
5. Shell Programming and Scripting
Hi All,
As I m very new for Unix, I need to check for a directory and move a file. If Directory is not found, The script should create a directory and move the file. Can any one help here. (7 Replies)
Discussion started by: vikramtk
7 Replies
6. Homework & Coursework Questions
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:
Ok i need to create a directory within another directory in one command. I'm already in a directory to. I need to... (6 Replies)
Discussion started by: gangsta
6 Replies
7. UNIX for Dummies Questions & Answers
Hello Experts
let say we got a line a file named
/user/Oracle/my_catalog/default/root/webcat+backup+testing+07192011.atr
now i have to create a directory with name
webcat backup testing 07192011
by removing + and removing .atr at the given path...can it be possible
Please let me know... (4 Replies)
Discussion started by: aks_1902
4 Replies
8. UNIX for Dummies Questions & Answers
Hi,
If i create a directory like with the command ...
~/.ssh
so where this folder will be get created in side my home directory ...? what (~) represents here..?:confused: (4 Replies)
Discussion started by: rahul125
4 Replies
9. Shell Programming and Scripting
Dear All,
I have a shell scripts which create a directory and perform moving some files, when the script is kept where it is creating directory then it runs fine , but when the scripts is run where it is supposed to be which is different location then where i am creating directory , scripts... (2 Replies)
Discussion started by: guddu_12
2 Replies
10. UNIX for Dummies Questions & Answers
hello,
is there any command that i can use to create a file and also it directory (if not exist)?
example: <command> /home/admin/testdir/test1.txt
desc: this will create test1.txt under testdir directory. but if testdir is not exist it will be created automatically.
thank you... (3 Replies)
Discussion started by: makan
3 Replies
LEARN ABOUT XFREE86
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)