02-06-2008
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
How one can measure the length of a string
but not with the help of awk utility
Can we write shell script for the same ? (2 Replies)
Discussion started by: dilipluhar
2 Replies
2. UNIX for Dummies Questions & Answers
Hi all,
pls help me in finding the length of the given string,
do we need to write a code seperately or is there any command??
pls help. (3 Replies)
Discussion started by: vasikaran
3 Replies
3. Shell Programming and Scripting
Hi all,
I have tried the following simple code in ksh. (length.sh)
#! /usr/bin/ksh
var="xxxxxx0987890"
echo stringlength is ${#var}
but this gives me a error saying "length.sh: bad substitution"
Can some one please help me in resolving this. (4 Replies)
Discussion started by: ssgrpid
4 Replies
4. Shell Programming and Scripting
Hi guys, I hope you can help me with my problem.
I have a text file that contains lines like this:
78 ANGELO -809.05
79 ANGELO2 -5,000.06
I need to find all occurences of amounts that are negative and replace them with x's
78 ANGELO xxxxxxx
79... (4 Replies)
Discussion started by: amangeles
4 Replies
5. Shell Programming and Scripting
Hello All,
Plz help me with:
I have a csv file with data separated by ',' and optionally enclosed by "". I want to check each of these values to see if they exceed the specified string length, and if they do I want to cut just that value to the max length allowed and keep the csv format as it... (9 Replies)
Discussion started by: ozzy80
9 Replies
6. Programming
Helo,
I have character array of sixe 128
char filename
now I have one problem that when I enter filename as nothing I got value
as " " ",`\0` " .
when I find this string length ( " ",`\0`) as 1(one).
actually I want to make this length as zero.
so what should I do (10 Replies)
Discussion started by: amitpansuria
10 Replies
7. UNIX for Dummies Questions & Answers
HI
In my script, i am reading the input from the user and want to find the length of the string.
The input may contain leading spaces. Right now, when leading spaces are there, they are not counted.
Kindly help me
My script is like below. I am using the ksh.
#!/usr/bin/ksh
echo... (2 Replies)
Discussion started by: dayamatrix
2 Replies
8. Shell Programming and Scripting
let image that we have string:
QQQQQQQ:ABCDE:FFFFFF:GGGGG
in second field can be 0 or 5 characters
if A exist i need set variable ex: VAR=yes
if B exist i need set variable ex: VAR1=yes
if C exist i need set variable ex: VAR2=yes
etc ...
if second field is empty no variable to set
if... (4 Replies)
Discussion started by: vikus
4 Replies
9. Shell Programming and Scripting
Hi All,
One of my source file is having Date column and the format of the column is YYYY-MM-DD. As per my business logic I have to check if the date format either YYY-MM-DD or YYYY-M-DD. If any records are in this format then I have print all the records and send those invalid records through... (4 Replies)
Discussion started by: suresh_target
4 Replies
10. Shell Programming and Scripting
I have this script which is very easy:
file=`echo 01114`
echo $file
01114
then I ran this
if ; then echo "yes";fi
it returned yes even though there are only 5 digits there
So then I tried
file=`echo abcd`
echo $file
abcd
if ]; then echo "yes";fi
if ]; then echo "yes";fi
It... (2 Replies)
Discussion started by: newbie2010
2 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)