#!/bin/bash

awk 'BEGIN{CONVFMT="%.2f"} 
{
    if ($1 ~ /^[0-9]+$/) {
        byte=$1; 
        if (byte >= 1073741824) 
            {printf("%.2f GB\t%s\n", byte/1073741824, $4)}
        else if (byte >= 1048576) 
            {printf("%.2f MB\t%s\n", byte/1048576, $4)}
        else if (byte >= 1024) 
            {printf("%.2f KB\t%s\n", byte/1024, $4)}
        else 
            {print $1 " B\t" $4}
    } 
    else {print $0}
}'