I keep on forgetting which file I'm editing.
In Vim 7.x, how can I have a permanent status bar at the bottom (like what is displayed when I press Ctrl+G) showing the current file name I'm editing?
From the manual, what you want is:
set laststatus=2
set statusline=%f "tail of the filename
As an aside: if you want a status line with a ton more information be sure to check out this link. It'll give you something a bit more fancier, like so: