Ubuntu repositories for Ubuntu Bash in Windows 10

It has apt-get and it uses the same commands we know in Ubuntu. So yes, but with limited functionality: the default setup does not have a desktop (unofficially you can though; the link has examples on installing gvim using apt-get but that also has its limits). So any application that is not a command line tool is pretty useless in the default setup.

Example installing ruby on bash on windows:

$ apt-add-repository ppa:brightbox/ruby-ng
$ apt update
$ apt install ruby2.3 ruby2.3-dev ruby-switch