Hi Folks,
I'm using bash script. I would like to check whether input is a number or not.(Only positive numbers).. if space or non numeric is entered, it should say "invalid input". pls help..
thanks in adv.
Br///
Vijay. (1 Reply)
Hi All,
How do i modify the below script such that if the input is numeric, it will give the numeric digit, else it will ouput "0"
echo "xxx" | awk '/^+$/' (6 Replies)
if test $b -ne
then
echo "\n\n\n\tPassword reset has been done successfully"
else
echo "\n\n\n\tAn error occurred"
fi
i want to check whether $b is non-numeric so how to do that? (3 Replies)
Below is the abstract of the script which is working fine.
if ]
then
error_process "Invalid month format."
return 1
fi
I am doing validation for month and it errors if the value is > 12 or < 0. In addition, I want to add another condition to error if it... (2 Replies)
Hi,
how to check the given string is numeric or not , without converting ( using strtol...).
for ex: if string is C01 - non-numeric data
if string is 001 - numeric data
TIA (11 Replies)
Hi All,
I would like to convert my below csh script to Perl.
Can any expert help ?
# To check for numeric input
set tested1 = `echo "$tested"| awk '/^+$/'`;
# To remove un-neccessary zeros
set tested2 = `echo "$tested"|awk '{print $0+0}'`; (3 Replies)
How to check if the file contains only numeric values.
I don't want to read entire file it eats lot of cpu
Or any way which consumes less memory n cpu..
Please suggest
-S (2 Replies)
Hi,
I want to know, how we find out if a column is having a numeric value or not.
For Example if we have a csv file as
ASDF,QWER,GHJK,123,FGHY,9876
GHTY,NVHR,WOPI,623,HFBS,5386
we need to find out if the 4th and 6th column has muneric value or not.
Thanks in advance
Keerthan (9 Replies)
I checked all the previous threads related to this and tried this.
My input is all numbers or decimals greater than zero everytime.
I want to check the same in the korn shell script.
Just validate the string to be numeric.
This is what I am doing.
var="12345"
if ) -o "$var" !=... (14 Replies)
Hello there, find below for my code first:
$pdp_asaba=`cat /tmp/temp_total | grep asaba | sed 's/*//g'`
if ]]
then pdp_asaba=0
fi
$pdp_abuja=`cat /tmp/temp_total | grep abuja | sed 's/*//g'`
if ]]
then pdp_abuja=0
fi
$pdp_ojota=`cat /tmp/temp_total | grep ojota | sed 's/*//g'`
if ... (3 Replies)
Discussion started by: infinitydon
3 Replies
LEARN ABOUT LINUX
ximtoppm
ximtoppm(1) General Commands Manual ximtoppm(1)NAME
ximtoppm - convert an Xim file into a portable pixmap
SYNOPSIS
ximtoppm [--alphaout={alpha-filename,-}] [ximfile]
DESCRIPTION
Reads an Xim file as input. Produces a portable pixmap as output. The Xim toolkit is included in the contrib tree of the X.V11R4 release.
OPTIONS --alphaout=alpha-filename
ximtoppm creates a PGM (portable graymap) file containing the alpha channel values in the input image. If the input image doesn't
contain an alpha channel, the alpha-filename file contains all zero (transparent) alpha values. If you don't specify --alphaout,
ximtoppm does not generate an alpha file, and if the input image has an alpha channel, ximtoppm simply discards it.
If you specify - as the filename, ximtoppm writes the alpha output to Standard Output and discards the image.
Actually, an Xim image can contain an arbitrary fourth channel -- it need not be an Alpha channel. ximtoppm extracts any fourth
channel it finds as described above; it doesn't matter if it is an alpha channel or not.
See pnmcomp(1) for one way to use the alpha output file.
All options can be abbreviated to their shortest unique prefix.
SEE ALSO pnmcomp(1), ppm(5)AUTHOR
Copyright (C) 1991 by Jef Poskanzer.
April 2, 2000 ximtoppm(1)