"UNIX stores your system configuration in text files, much like the old
Windows INI files. This means the text editor becomes your most
important UNIX configuration tool, so it's essential that you learn the
main UNIX text editor, vi."
"Alternately pronounced "vye" or "vee-eye," vi provides a full-screen
text editor that, while it allows you to edit text, definitely has some
quirks. Designed long ago, vi was one of the first text editors that
used all the lines of text on a terminal display, called a full-screen
editor in contrast to previous editors that only allowed you to view
and modify a line at a time. While many might think vi is an example of
1970s retro technology, it still forms the editor available on just about
every version of UNIX. (I would say every version, but I once worked
on a system from Prime Computer that did not include vi.)"
"On all other UNIX systems, however, you may not find many other
editors, but you should find vi."
