[$] Debian and code names
Debian typically uses code names to refer to its releases, starting
with the Toy Story character names used (mostly) instead of numbers.
The "Buster" release is due on July 6 and you will rarely hear it
referred to as "Debian 10". There are some other code names used for
repository (or suite) names in the Debian infrastructure; "stable", "testing",
"unstable", "oldstable", and sometimes even "oldoldstable" are all used as
part of the sources for the APT
packaging tool. But code names of any sort are hard to keep track of; a
discussion on the debian-devel mailing list looks at moving away from, at
least, some of the
repository code names.