I'm a big fan of
meld - a visual diff and merge tool for Gnome. It shows two files (or directories) side-by-side and with their differences highlighted, and I can easily select which parts I want to move from one file to the other.
I'm looking for a similar tool, but it should work on the (Linux) console, eg. it should not require any X server. Maybe using an ncurses interface.
Is there such tool?