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Top Forums UNIX for Dummies Questions & Answers checking if parameter passed is a number Post 302335656 by jim mcnamara on Monday 20th of July 2009 06:48:12 AM
Old 07-20-2009
Code:
!#/bin/ksh
set -A myarr a b hello bye

echo "Enter a number \c"
read var
b=$(echo $var | tr -dc '[0-9]')
if [[ ${#b} -eq ${#var} || $var -le  ${#myarr[*]} ]]; then
   echo "$var is not all numeric characters or too large"
fi

 

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NetSDS::Util::Types(3pm)				User Contributed Perl Documentation				  NetSDS::Util::Types(3pm)

NAME
NetSDS::Util::Types - type checking routines SYNOPSIS
use NetSDS::Util::Types; # Check if variable contains integer value if (is_int($var)) { $var++; } else { print "Value is not integer!"; } DESCRIPTION
"NetSDS::Util::Types" module contains functions for checking data for being of exact data types. EXPORTED FUNCTIONS
is_int($var) - check if parameter is integer Check if given parameter is integer is_float([...]) - check if parameter is float number Check if given parameter is float number is_date([...]) - check if parameter is date string Return 1 if parameter is date string is_binary([...]) - check for binary content Return 1 if parameter is non text. is_ref_scalar($ref) - check if reference to scalar value Return true if parameter is a scalar reference. my $var = 'Scalar string'; if (is_ref_scalar($var)) { print "It's scalar value"; } is_ref_array($ref) - check if reference to array Return true if parameter is an array reference. is_ref_hash($ref) - check if hashref Return true if parameter is a hash reference. is_ref_code($ref) - check if code reference Return true if parameter is a code reference. is_ref_obj($ref, [$class_name]) - check if blessed object Return true if parameter is an object. EXAMPLES
None BUGS
None TODO
Add more functions. SEE ALSO
None. AUTHORS
Valentyn Solomko <pere@pere.org.ua> Michael Bochkaryov <misha@rattler.kiev.ua> perl v5.12.4 2011-08-27 NetSDS::Util::Types(3pm)
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