Linux doesn't have EDT, but there are scores of editors available. The
only one that's guaranteed to be included in every UNIX version is
vi---forget it, your sysadm must have installed something better.
Probably the most popular editor is emacs, which can emulate EDT
to a certain degree; jed is another editor that provides EDT
emulation.
These two editors are particularly useful for editing program sources, since
they have two features unknown to EDT: syntax hilighting and automatic
indentation. Moreover, you can compile your programs from within the editor
(command ESC-X compile); in case of a syntax error, the cursor will be
positioned on the offending line. I bet that you'll never want to use the
true blue EDT again.
If you have emacs: start it, then type ESC-X edt-emulation-on.
Pressing ALT--X or ESC-X is emacs' way of issuing commands, like
EDT's CTRL--Z. From now on, emacs acts like EDT apart from a
few commands. Differences:
emacs. Type fg to resume it);
If you have jed: ask your sysadm to configure jed properly.
Emulation is already on when you start it; use the normal keypad keys, and
press CTRL--H CTRL--H or CTRL-? to get help. Commands are issued in the same
way as emacs'. In addition, there are some handy key bindings missing
in the original EDT; key bindings can also be tailored to your own
taste. Ask your sysadm.
In alternative, you may use another editor with a completely different
interface. emacs in native mode is an obvious choice; another popular
editor is joe, which can emulate other editors like emacs itself
(being even easier to use) or the DOS editor. Invoke the editor as
jmacs or jstar and press, respectively, CTRL-X H or CTRL-J to get
online help. emacs and jed are much more powerful than good
ol' EDT.