Sorry- I completely missed the fact that I hadn't replied to your post! Maybe
the concept of having 15 tabs open at once is not as smart as it seemed...
Anyway, I don't know much about the specifics of Debian. However, making an
educated guess (I've never actually even tried to do this myself), I'd
suspect you'd need:
*A moderate amount of experience in Bash, as well as at least one more
traditional interpreted language (e.g. Python, Perl);
*A good knowledge of the infrastructure and operational mechanics of a
comparable distro (e.g. in your case, Debian, Ubuntu, or one of their
children);
*A functioning knowledge of any tools you plan to use as part of the
infrastructure.
In general, beyond these elements, anything else you'll need should be able
to be found with a search engine or reference. That said, in the case of a
knowledge of the operating system and key parts of the distro, knowing more
will save plenty of time looking things up, and obviously at least basic
skills are required (although one would assume a GNU/Linux user can use the
OS).