How to CMake Good - 0a - Installing on Linux

This is the first installment of How to CMake Good. I'll show how to install the latest CMake version on Linux. Users on Linux are often the most out-of-date because of an implicit reliance on the CMake version from their distribution's package repository. Installing the latest version of CMake on Linux isn't hard at all: It doesn't require compiling any sources or manually moving any files. Take a watch and you'll see what I mean. Errata: When I say "upstream" package maintainers, I meant to refer to the package maintainers that supply packages in your distribution's package sources. I also say "so" a lot. Sorry. Other key phrases include "you can see." I'll work on that. original character pls do not steal