sudo is missing and root password is unknown?

On Command Prompt call:

$ lxrun /setdefaultuser root

When now starting the bash with

$ bash

the user is root and the password can be changed with

$ passwd

How to switch between distributions with WSL-Distribution-Switcher?

To list all installed distribution call:

$ python switch.py

To switch between them call:

$ python switch.py image[:tag]

To install a downloaded image call:

$ python install.py image[:tag] | tarball | squashfs

To download a new image call:

$ python get-source.py image[:tag]

A list of images can be found at get-source.py.

A tool to switch between distributions is WSL-Distribution-Switcher.

It needs Pythin 3.0 and comes with tools to download, install and switch distributions.