#!/usr/bin/perl -w
use strict;

my $num;

while() {
  print 'Enter a number between 1 and 10 (inclusive): ';
  chomp( $num = <STDIN> );

  if( $num gt "9" ) {
    print "Numbers only. That was a string!\n";
    next;
  }

  if( $num < 1 || $num > 10 ) {
    print "Please enter a value greater than one or less than 10\n";
    next;
  }

  print "Thank you. You entered $num\n";
  last;
}