Script the addition of a new X++ class\method and update existing classes to call new class method

HI

Using a script how do I (batch file, powershell, sqlcmd - not sure what to use):

1) Add my own an X++ class and method to Dynamics AX AOT?

2) Update an existing AOT Application class method (for e.g. the LogUpdate method) with  new X++ code (which will call the class\method I want to register in 1 above)?

Thanks