phone-bash

#!/bin/bash
#===================================================================================
# Bash shell phone number parser
#===================================================================================

function validate_phone_number {
    phone_number=$(echo $phone_number | tr -d '[ \-)(]')
	if echo $phone_number | egrep -q '^[0-9]{10}$'
	then
	    phone_number_valid=true
    else
        phone_number_valid=false
    fi    
}

function extract_area_code {
	area_code=`echo $phone_number | cut -b 1-3`
}

function extract_prefix {
	phone_prefix=`echo $phone_number | cut -b 4-6`
}

function extract_number {
	phone_number_last4=`echo $phone_number | cut -b 7-10`
}

function format_phone_number {
    extract_area_code
    extract_prefix
    extract_number
	formatted_phone_number="($area_code) $phone_prefix-$phone_number_last4"
}