#!/bin/bash

echo "Iveskite pradine sekos reiksme: "
read pradzia

echo "Iveskite paskutine sekos reiksme: "
read pabaiga

if [ $pradzia -ge $pabaiga ]
then
    echo "Tokia seka negalima"
else
    while [ $pradzia -le $pabaiga ]
    do
        echo -n $pradzia " "
        pradzia=`expr $pradzia + 2`
    done
fi

echo