05-15-2009
10 More Discussions You Might Find Interesting
1. UNIX Desktop Questions & Answers
One of the things that I have learned to take for granted in the Win32 world is the cut, copy and paste hotkeys of ^X, ^C and ^V.
I use these keys all the time under Win32 to copy and paste information from one GUI into another GUI.
My question is, does X have a similiar standard?
... (4 Replies)
Discussion started by: auswipe
4 Replies
2. Shell Programming and Scripting
hi i am new to shell scripting,
i have been trying to cut columns numbered 1,4 of a file consisiting of 4 columns. Each column is seperated by 2 spaces.
for example:
john 6102097199 tennessee usa
michel 6734590899 texas USA
now, i need to cut the name... (3 Replies)
Discussion started by: t_harsha18
3 Replies
3. UNIX for Dummies Questions & Answers
Hi all!
How do I cut, copy and paste under unix??? (2 Replies)
Discussion started by: aitor314
2 Replies
4. Shell Programming and Scripting
Hello,
I am trying to solve for a couple of hours now the following problem:
I have n files and would like to add the third column of each file to a new file:
temp1.txt
1 2 3
1 2 3
1 2 3
temp2.txt
1 2 4
1 2 4
1 2 4
1 2 4
temp3.txt (2 Replies)
Discussion started by: creamcheese
2 Replies
5. Shell Programming and Scripting
Hi i need a favour
i have a file which has some trillions of records. The file is like this
11111000000000192831840914000000000000000000000000000
45789899090000000000000000011111111111111111111111111
I want to cut specific postions in each line like cut1-3 and assisgn it to a variable and... (5 Replies)
Discussion started by: richa2.m
5 Replies
6. Shell Programming and Scripting
hi,
I have a file with content like this for an employee:
EmployeeID
101
Day_type, day
vacation,1/2/2009
sick day, 3/2/2009
personal day, 4/5/2009
jury duty day, 5/5/2009
how do I make the result to show:
EmployeeID,Day_type,day
101,vacation,1/2/2009
101,sick day,... (6 Replies)
Discussion started by: jbchen
6 Replies
7. Shell Programming and Scripting
Hi,
Need a help with shell script. I have to search for a string in one of the file, if match found, copy the line to a new file and delete the line from the exisiting file.
eg:
83510000000000063800000.1800000.1600000.1600000.2400000.1800000.2000000.21... (6 Replies)
Discussion started by: gpaulose
6 Replies
8. Shell Programming and Scripting
I have a file and need to only select users that have a shell of “/bin/bash” in the line using awk or sed please help (4 Replies)
Discussion started by: boyboy1212
4 Replies
9. Shell Programming and Scripting
Hi Friends,
I have a file1
i want to retrieve only the fields which have DEP,CITY,TRANS as headers in other file.
Output:
I want to give the input as DEP,CITY,TRANS column names to get the output.
i used cut command .. but if i have 300 fileds it is more difficult to... (4 Replies)
Discussion started by: i150371485
4 Replies
10. UNIX for Beginners Questions & Answers
I have 2 files contains more than 5000 lines, I want to paste the 1st column of both file in an output file using awk.
Please suggest to me I had tried paste command but it merges my both column.
--- Post updated at 10:26 PM ---
file1.txt
2020-01-07 235400
2020-01-07 235400
2020-01-07... (4 Replies)
Discussion started by: Sagar Singh
4 Replies
LEARN ABOUT ULTRIX
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)