02-21-2006
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
how to parse the command line argument to look for '@' sign and the following with '.'.
In my shell script one of the argument passed is email address. I want to parse this email address to look for correct format.
rmjoe123@hotmail.com has '@' sign and followed by a '.'
to be more... (1 Reply)
Discussion started by: rmjoe
1 Replies
2. Shell Programming and Scripting
Say I want to get the value of last command line argument using the value in $# (or some other way if u can suggest) how do I do it??
$"$#"
`$"$#"`
These don't work :( (4 Replies)
Discussion started by: amit_oddey21
4 Replies
3. Shell Programming and Scripting
Hi ,
I have a piece of code ...wherein I need to assign the following ...
1) A command line argument to a variable
e.g origCount=ARGV
2) A unix command to a variable
e.g result=`wc -l testFile.txt`
in my awk shell script
When I do this :
print "origCount" origCount --> I get the... (0 Replies)
Discussion started by: sweta_doshi
0 Replies
4. Programming
Hi,
I have a very simple C program which will run in UNIX. When i am passing * as the command line argument, i am gettig the below output.
Program:
#include <stdio.h>
#include "mylibrary.h"
int **environ;
int main(int argc,char *argv)
{
int i;
printf("\nHello... (2 Replies)
Discussion started by: dsudipta
2 Replies
5. Shell Programming and Scripting
I have to write a script to determine whether given command line argument ($1) contains "*" symbol or not, if $1 does not contains "*" symbol add it to $1, otherwise show message "Symbol is not required". For e.g. If we called this script q5 then after giving ,
$ q5 /bin
Here $1 is /bin, it... (5 Replies)
Discussion started by: cynosure2009
5 Replies
6. Shell Programming and Scripting
Hi Guys
When I run the below command
ssh -o 'PasswordAuthentication yes' -o 'PreferredAuthentications publickey' -i $HOME/.ssh/id_dsa Server_Name
I found the below error
ommand-line line 0: Missing yes/no argument
Kindly help me to sort out
Double post, continued... (0 Replies)
Discussion started by: Pratik4891
0 Replies
7. Shell Programming and Scripting
HI ,
I am new to csh. I need to pass some command line arguments like
./abc.sh -os Linux -path abc -tl aa -PILX 1
I have defined the loop as shown below. But its taking "-os" switches as arguments. Its treating them as arguments.
How to resolve it?
while ( $#argv != 0 )
switch ($argv)
... (7 Replies)
Discussion started by: vineet.dhingra
7 Replies
8. Shell Programming and Scripting
I would like to use a string as a command line argument...is this possible using TCSH? For example say my script is called TEST and I would like to pass a string into my script stating why the test failed.
EXAMPLE:
TEST "Failed due to missing statement" (4 Replies)
Discussion started by: thibodc
4 Replies
9. Shell Programming and Scripting
I'm trying to write a bash script called YN that looks like the following
YN "Specify a question" "doThis" "doThat"
where "doThis" will be executed if the answer is "y", otherwise "doThat".
For example
YN "Do you want to list the file dog?" "ls -al dog" ""
Here's my attempt... (3 Replies)
Discussion started by: LeoKSimon
3 Replies
10. UNIX for Beginners Questions & Answers
Hi Guys, I'm trying to work out how to add a command line argument inside single quotes. Would anyone be able to help please as I'm going mad :)
I want to be able to place the filename on command line and it then be used in a script but it needs to have quotes surrounding it.
Thanks in... (4 Replies)
Discussion started by: mutley2202
4 Replies
LEARN ABOUT PHP
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)