NAME

ex, edit − text editor

SYNOPSIS

ex [ − ] [ −v ] [ −t tag ] [ −r ] [ +command ] [ −l ] name ... 
edit [ ex options ]

DESCRIPTION

Ex is the root of a family of editors: specifically, 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 not an experienced user, you will find that the editor edit most convenient.  Editor edit avoids some of the complexities of ex, which is used mostly by systems programmers 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. 

DOCUMENTATION

The document Edit: A tutorial provides a comprehensive introduction to edit, assuming no previous knowledge of computers or the UNIX system. 

The Ex Reference Manual − Version 3.5 is a comprehensive and complete manual for the command mode features of ex, but cannot prepare you to use the editor.  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 introductory and advanced documents can be applied with ex. 

An Introduction to Display Editing with Vi introduces the display editor vi and provides reference material on vi.  All of these documents can be found in volume 2c of the Programmer’s Manual.  In addition, the Vi Quick Reference card summarizes the commands of vi in a functional way, and is useful with the Introduction. 

FILES

/usr/lib/ex?.?stringserror messages
/usr/lib/ex?.?recoverrecover command
/usr/lib/ex?.?preservepreserve command
/etc/termcapdescribes capabilities of terminals
~/.exrceditor startup file
/tmp/Exnnnnneditor temporary
/tmp/Rxnnnnnnamed buffer temporary
/usr/preservepreservation directory

SEE ALSO

awk(1), ed(1), grep(1), sed(1), grep(1), vi(1), termcap(5), environ(5)

AUTHOR

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.

BUGS

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 full screen of output may result if long lines are present. 

File input/output errors do not 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 the editor. 

Null characters are discarded in input files, and cannot appear in resultant files. 

4th Berkeley Distribution  —  %W%%Q%%Y%