The appropriate directory for servers is /var/games/minecraft/servers/Tfc, where you missed the ‘servers’ part (at least here in the post).
I’ve created a guide, which i thought did just fine, here on the wiki. I also created one for forge-based packs such as Direwolf20.
I don’t see anything inherently wrong with the minuscraft instructions except that it seems to assume you will have Windows, which may not always be the case, as you’ve seen.
The console doesn’t filter, it just doesn’t send the whole file–just the last 100 lines. But of the last 100 lines, it’s all there, intact. The reasoning was that logfiles were able to get to tens or hundreds of thousands of lines back before log rotations and that would stall the whole UI.
No, the console log just transmits the last 100 lines of the file.
On the profiles page, hit ‘delete’, making sure no servers use that profile. Also, you can delete the section from the profiles.config file in /var/games/minecraft/profiles