I'm using FileZilla and have found the default LibreOffice Writer not the best for on-the-go code editing.
I have the option to use custom program for text editing, so why not give nano a go. So I'm wondering, where is the nano (shell script?) file located?
I had a quick Google for this question and only found an ArchLinux forum posing the question on this thread.
From the thread, I checked /usr/bin/nano
and it's not existant there.