After looking through the server section of the forums it would seem that multiple versions of Minetest are required to participate on different servers.
Some servers still use Minetest version 0.3.1, others 0.4.1, and a few have adopted the more recent version (as of this writing), 0.4.3.
I've read the readme.txt file for the instructions on how to compile Minetest myself.
I'm guessing that I could make directories (folders) that correspond to the Minetest version required by the servers, ie. /mt031, /mt041, and /mt043, then download and compile the different Minetest versions in each respective directory.
What I don't understand, yet, is how to distinguish the binary "minetest" in Ubuntu Linux's /usr/bin from the other Minetest versions.
Would each compiled version overwrite the previous /usr/bin/minetest ?
Is there an option that I'm supposed to add to the "cmake" or "make" command line? (Is "command line" correct or is it refered to as a "string"?)
Thanks.
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Edit for a little more clarification~
The version of Minetest I'm playing was installed through Synaptic using a daily build, Ubuntu/Mint repository PPA found here:
https://code.launchpad.net/~minetestdevs/+archive/daily-builds/+packages
This process split Minetest across three different directories:
/usr/share/minetest/
/usr/bin/minetest
~/.minetest/
Every Linux program I have in my computer has been installed through Synaptic. Rarely have I used the terminal. The cryptic and arcane nature of command-line commands are intimidating to us Windows converts