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1.1       root        1: .TH EX 1 "26 August 1980"
                      2: .UC 4
                      3: .SH NAME
                      4: ex, edit \- text editor
                      5: .SH SYNOPSIS
                      6: .B ex
                      7: [
                      8: .B \-
                      9: ] [
                     10: .B \-v
                     11: ] [
                     12: .B \-t 
                     13: tag
                     14: ] [
                     15: .B \-r
                     16: ] [
                     17: \fB\+\fIcommand\fR
                     18: ] [
                     19: .B \-l
                     20: ]
                     21: name ...
                     22: .br
                     23: .B edit
                     24: [
                     25: ex options
                     26: ]
                     27: .SH DESCRIPTION
                     28: .I Ex
                     29: is the root of a family of editors:
                     30: .I edit,
                     31: .I ex
                     32: and
                     33: .I vi.
                     34: .I Ex
                     35: is a superset of
                     36: .I ed,
                     37: with the most notable extension being a display editing facility.
                     38: Display based editing is the focus of
                     39: .I vi.
                     40: .PP
                     41: If you have not used
                     42: .I ed,
                     43: or are a casual user, you will find that the editor
                     44: .I edit
                     45: is convenient for you.
                     46: It avoids some of the complexities of
                     47: .I ex
                     48: used mostly by systems programmers and persons very familiar with
                     49: .I ed.
                     50: .PP
                     51: If you have a \s-2CRT\s0 terminal, you may wish to use a display
                     52: based editor; in this case
                     53: see
                     54: .IR vi (1),
                     55: which is a command which focuses on the display editing portion of
                     56: .I ex.
                     57: .SH DOCUMENTATION
                     58: The document
                     59: .I "Edit: A tutorial"
                     60: provides a comprehensive introduction to
                     61: .I edit
                     62: assuming no previous knowledge of computers or the \s-2UNIX\s0 system.
                     63: .PP
                     64: The
                     65: .I "Ex Reference Manual \- Version 3.5"
                     66: is a comprehensive and complete manual for the command mode features
                     67: of
                     68: .I ex,
                     69: but you cannot learn to use the editor by reading it.
                     70: For an introduction to
                     71: more advanced forms of editing using the command mode of
                     72: .I ex
                     73: see the editing documents written by Brian Kernighan for the editor
                     74: .I ed;
                     75: the material in the introductory and advanced documents works also with
                     76: .I ex.
                     77: .PP
                     78: .I "An Introduction to Display Editing with Vi"
                     79: introduces the display editor
                     80: .I vi
                     81: and provides reference material on
                     82: .I vi.
                     83: All of these documents can be found in volume 2c of the Programmer's Manual.
                     84: In addition, the
                     85: .I "Vi Quick Reference"
                     86: card summarizes the commands
                     87: of
                     88: .I vi
                     89: in a useful, functional way, and is useful with the
                     90: .I Introduction.
                     91: .SH FILES
                     92: .DT
                     93: /usr/lib/ex?.?strings          error messages
                     94: .br
                     95: /usr/lib/ex?.?recover          recover command
                     96: .br
                     97: /usr/lib/ex?.?preserve         preserve command
                     98: .br
                     99: /etc/termcap                   describes capabilities of terminals
                    100: .br
                    101: ~/.exrc                                editor startup file
                    102: .br
                    103: /tmp/Ex\fInnnnn\fR                     editor temporary
                    104: .br
                    105: /tmp/Rx\fInnnnn\fR                     named buffer temporary
                    106: .br
                    107: /usr/preserve                  preservation directory
                    108: .SH SEE ALSO
                    109: awk(1), ed(1), grep(1), sed(1), grep(1), vi(1), termcap(5), environ(7)
                    110: .SH AUTHOR
                    111: Originally written by William Joy
                    112: .br
                    113: Mark Horton has maintained the editor since version 2.7, adding macros,
                    114: support for many unusual terminals,
                    115: and other features such as word abbreviation mode.
                    116: .SH BUGS
                    117: The
                    118: .I undo
                    119: command causes all marks to be lost on lines changed and then restored
                    120: if the marked lines were changed.
                    121: .PP
                    122: .I Undo
                    123: never clears the buffer modified condition.
                    124: .PP
                    125: The
                    126: .I z
                    127: command prints a number of logical rather than physical lines.
                    128: More than a screen full of output may result if long lines are present.
                    129: .PP
                    130: File input/output errors don't print a name if the command line \fB`\-'\fR
                    131: option is used.
                    132: .PP
                    133: There is no easy way to do a single scan ignoring case.
                    134: .PP
                    135: The editor does not warn if text is placed in named buffers and not used
                    136: before exiting the editor.
                    137: .PP
                    138: Null characters are discarded in input files, and cannot appear in resultant
                    139: files.

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