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+%0A/**%0A * Write a description of class extras here.%0A * %0A * @author (Brendan Manning) %0A * @version (0.0.1)%0A */%0Apublic class extras%0A%7B%0A    public static void echoOS() %7B%0A        System.out.println(%22%7B%7B%22 + System.getProperty(%22os.name%22) + %22%7D%7D%22);%0A    %7D%0A    public static void echoVersion() %7B%0A        System.out.println(%22%7B%7B%22 + System.getProperty(%22os.name%22) + %22 %22 + System.getProperty(%22os.version%22) + %22%7D%7D%22);%0A    %7D%0A    public static void echo(String arg) %7B%0A        //code here%0A        //System.out.println(%22The echo class worked!%22);%0A        if(arg.toLowerCase().equals(%22$os%22)) %7B%0A            //if we're looking for the OS property%0A            echoOS();%0A        %7D else if (arg.toLowerCase().equals(%22$version%22)) %7B%0A            //if we're looking for the host OS version%0A            echoVersion();%0A        %7D else %7B%0A            //otherwise just return the text%0A            System.out.println(arg);%0A        %7D%0A    %7D%0A    public static void main(String%5B%5D args) %7B%0A        System.out.println(%22jLinux - Copyright 2016, Brendan Manning%22);%0A    %7D%0A%7D%0A

Create extras.java