02-01-2007
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
I have a file given below. I want to split the file where ever I came across
***(instead you can put ### symbols in the file) . Also I need to name the file by extracting the report name from the first line which is in bold(eg:RPT507A) concatinated with DD(day on which the file runs). Can someone... (1 Reply)
Discussion started by: srivsn
1 Replies
2. Shell Programming and Scripting
Can any one help me to correct following script.
I have 2 directories DropZone and ProcessZone. File pattern is *VEHDESCSUM*.
Finding the 'no of files' in DropZone directory using ls *VEHDESCSUM* |wc -l
If DropZone has more than one file or 0 files then exit 1
If DropZone has one file then... (2 Replies)
Discussion started by: ramanagh
2 Replies
3. Shell Programming and Scripting
Hi,
I have a comma separated file with millions of records in it.
I have a requirement to split the file based on the value in a one of the columns.
Suppose i have a text file with columns like C1, C2,C3,C4
Column C4 can hold the values either 01 or 02 03 or 04.
I nned to extract... (2 Replies)
Discussion started by: Raamc
2 Replies
4. Shell Programming and Scripting
Hi
i am new to scripting. i have a file file.dat with content as :
CONTENT_STORAGE PERCENTAGE FLAG:
/storage_01 64% 0
/storage_02 17% 1
I need to update the value of FLAG for a particular CONTENT_STORAGE value
I have written the following code
#!/bin/sh
threshold=20... (1 Reply)
Discussion started by: kichu
1 Replies
5. Shell Programming and Scripting
Hello,
I have File1 in a directory A, a File2 in a directory B.
If the File2 is not empty
Then I have to move File1 from directory A to a directory archive
Else no action.
Is it possible to do this from one command line?
Thank you in advance for your answers.
Madi (2 Replies)
Discussion started by: AngelMady
2 Replies
6. Shell Programming and Scripting
Hi, Gurus,
I got a problem to resolve following issue:
I have one file file1as following:
start_dt=2010-01-01 12:00:02
start_dt=2011-01-01 09:00:02
start_dt=2009-01-01 11:00:02I have another file file2 as following:
title1, 2010-01-03 10:00:02
title2, 2011-01-04 11:00:02
title3,... (5 Replies)
Discussion started by: ken002
5 Replies
7. Shell Programming and Scripting
Experts,
What would be the code in ksh/perl to read 2 files alternatively, based on the following condition.
while reading file 1 we check if a blank line is encountered,
if yes, then we read file 2 unless a blank line is encountered in file 2
if we have a blank line in file 2 we come back... (3 Replies)
Discussion started by: suraj.sheikh
3 Replies
8. Shell Programming and Scripting
I collect data in a file in below format(Month Day Year Size) in RedHat Linux. Now i want to calculate the data size date wise. As i code shell script after long time, i forgot the features and syntax. Can anyone help me regard this please.
Feb 8 2014 15
Feb 10 2014 32
Feb 10 2014 32
Feb 12... (2 Replies)
Discussion started by: makauser
2 Replies
9. Shell Programming and Scripting
I want to keep last 2 days data from a file and want to delete others data from the file. Please help me.
Sample Input
# cat messages-2
Apr 15 11:25:03 test1 kernel: imklog 4.6.2, log source = /proc/kmsg started.
Apr 15 11:25:03 test1 rsyslogd: (re)start
Apr 16 19:42:03 test1 kernel:... (2 Replies)
Discussion started by: makauser
2 Replies
10. Shell Programming and Scripting
I have an input file like this...
All iI want to do is If the lines are identical except for the last field i want to merge them into single line
input_file
I feel something is nothing
I feel something is everything
apple mango banana
apple mango grapes
I want to get output like this:... (3 Replies)
Discussion started by: raj_k
3 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)