Untitled

#!/bin/bash

function print_usage {
    echo -en "Usage $0 [arg]\n\n"
    echo -en "\t--major\tPrint major version number.\n"
    echo -en "\t--minor\tPrint minor version number.\n"
    exit 1
}

if [[ -n "$2" ]];then
    echo -en "Too many arguments.\n\n"
    print_usage
fi

if [[ -z "$1" ]];then
    bash --version|awk -F'version ' '/[Bb]ash.*version/ {split($2,a,".");print a[1]"."a[2]}'
    exit 0
fi

case $1 in
    --major)
        bash --version|awk -F'version ' '/[Bb]ash.*version/ {split($2,a,".");print a[1]}';;
    --minor)
        bash --version|awk -F'version ' '/[Bb]ash.*version/ {split($2,a,".");print a[2]}';;
    *)
        echo -en "What are you even doing?\n\n"
        print_usage;;
esac