I'm looking for a very, very simple FTP server for Linux that is pretty much zero configuration, does not run as a daemon, and I can start and stop when I need to quickly send a file over.
More info: I use SSH for everything. But WordPress wants to update itself once in a while, so I need an FTP server that I can have listen only on 127.0.0.1 in the directory that I start it in so WP can upgrade. I don't want to deal with creating users and managing virtual directories, I don't want something that runs in the background and opens me to more vectors of attack.
I'm surprised that I haven't been able to find anything on Google. There are many such programs for Windows (admittedly not CLI-based, but that do the same thing).