ex, edit - text editor
ex [ - ] [ -v ] [ -t tag ] [ -r ] [ +command ] [ -l ] name ...
edit [ ex options ]
Ex is the root of a family of editors: edit, ex and vi. Ex is a superset of ed, with the
most notable extension being a display editing facility. Display based editing is the
focus of vi.
If you have not used ed, or are a casual user, you will find that the editor edit is con-
venient for you. It avoids some of the complexities of ex used mostly by systems program-
mers and persons very familiar with ed.
If you have a CRT terminal, you may wish to use a display based editor; in this case see
vi(1), which is a command which focuses on the display editing portion of ex.
The document Edit: A tutorial (USD:14) provides a comprehensive introduction to edit
assuming no previous knowledge of computers or the UNIX system.
The Ex Reference Manual - Version 3.7 (USD:16) is a comprehensive and complete manual for
the command mode features of ex, but you cannot learn to use the editor by reading it.
For an introduction to more advanced forms of editing using the command mode of ex see the
editing documents written by Brian Kernighan for the editor ed; the material in the intro-
ductory and advanced documents works also with ex.
An Introduction to Display Editing with Vi (USD:15) introduces the display editor vi and
provides reference material on vi. In addition, the Vi Quick Reference card summarizes
the commands of vi in a useful, functional way, and is useful with the Introduction.
/usr/share/misc/exstrings error messages
/usr/libexec/exrecover recover command
/usr/sbin/expreserve preserve command
/etc/termcap describes capabilities of terminals
~/.exrc editor startup file
/tmp/Exnnnnn editor temporary
/tmp/Rxnnnnn named buffer temporary
/usr/preserve preservation directory
awk(1), ed(1), grep(1), sed(1), grep(1), vi(1), termcap(5), environ(7)
Originally written by William Joy
Mark Horton has maintained the editor since version 2.7, adding macros, support for many
unusual terminals, and other features such as word abbreviation mode.
The undo command causes all marks to be lost on lines changed and then restored if the
marked lines were changed.
Undo never clears the buffer modified condition.
The z command prints a number of logical rather than physical lines. More than a screen
full of output may result if long lines are present.
File input/output errors don't print a name if the command line `-' option is used.
There is no easy way to do a single scan ignoring case.
The editor does not warn if text is placed in named buffers and not used before exiting
Null characters are discarded in input files, and cannot appear in resultant files.
4th Berkeley Distribution October 21, 1996 EX(1)