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User Commands edit(1)
NAME
edit - text editor (variant of ex for casual users)
SYNOPSIS
/usr/bin/edit [ -| -s] [-l] [-L] [-R] [ -r [filename]] [-
t tag] [-v] [-V] [-x] [-wn] [-C] [+command | -c command]
filename...
/usr/xpg4/bin/edit [ -| -s] [-l] [-L] [-R] [ -r [filename]]
[-t tag] [-v] [-V] [-x] [-wn] [-C] [+command | -c command]
filename...
/usr/xpg6/bin/edit [ -| -s] [-l] [-L] [-R] [ -r [filename]]
[-t tag] [-v] [-V] [-x] [-wn] [-C] [+command | -c command]
filename...
DESCRIPTION
The edit utility is a variant of the text editor ex recom-
mended for new or casual users who wish to use a command-
oriented editor. It operates precisely as ex with the fol-
lowing options automatically set:
novice ON
report ON
showmode ON
magic OFF
The following brief introduction should help you get started
with edit. If you are using a CRT terminal you might want to
learn about the display editor vi.
To edit the contents of an existing file you begin with the
command edit name to the shell. edit makes a copy of the
file that you can then edit, and tells you how many lines
and characters are in the file. To create a new file, you
also begin with the command edit with a filename: edit name;
the editor tells you it is a [New File].
The edit command prompt is the colon (:), which you should
see after starting the editor. If you are editing an exist-
ing file, then you have some lines in edit's buffer (its
SunOS 5.10 Last change: 11 Jun 2004 1
User Commands edit(1)
name for the copy of the file you are editing). When you
start editing, edit makes the last line of the file the
current line. Most commands to edit use the current line if
you do not tell them which line to use. Thus if you say
print (which can be abbreviated p) and type carriage return
(as you should after all edit commands), the current line is
printed. If you delete (d) the current line, edit prints the
new current line, which is usually the next line in the
file. If you delete the last line, then the new last line
becomes the current one.
If you start with an empty file or wish to add some new
lines, then the append (a) command can be used. After you
execute this command (typing a carriage return after the
word append), edit reads lines from your terminal until you
type a line consisting of just a dot (.); it places these
lines after the current line. The last line you type then
becomes the current line. The insert (i) command is like
append, but places the lines you type before, rather than
after, the current line.
The edit utility numbers the lines in the buffer, with the
first line having number 1. If you execute the command 1,
then edit types the first line of the buffer. If you then
execute the command d, edit deletes the first line, line 2
becomes line 1, and edit prints the current line (the new
line 1) so you can see where you are. In general, the
current line is always the last line affected by a command.
You can make a change to some text within the current line
by using the substitute (s) command: s/old/new/ where old is
the string of characters you want to replace and new is the
string of characters you want to replace old with.
The filename (f) command tells you how many lines there are
in the buffer you are editing and says [Modified] if you
have changed the buffer. After modifying a file, you can
save the contents of the file by executing a write (w) com-
mand. You can leave the editor by issuing a quit (q) com-
mand. If you run edit on a file, but do not change it, it is
not necessary (but does no harm) to write the file back. If
you try to quit from edit after modifying the buffer without
writing it out, you receive the message No write since last
change (:quit! overrides), and edit waits for another com-
mand. If you do not want to write the buffer out, issue the
quit command followed by an exclamation point (q!). The
buffer is then irretrievably discarded and you return to the
shell.
By using the d and a commands and giving line numbers to see
lines in the file, you can make any changes you want. You
should learn at least a few more things, however, if you use
SunOS 5.10 Last change: 11 Jun 2004 2
User Commands edit(1)
edit more than a few times.
The change (c) command changes the current line to a
sequence of lines you supply (as in append, you type lines
up to a line consisting of only a dot (.). You can tell
change to change more than one line by giving the line
numbers of the lines you want to change, that is, 3,5c. You
can print lines this way too: 1,23p prints the first 23
lines of the file.
The undo (u) command reverses the effect of the last command
you executed that changed the buffer. Thus if you execute a
substitute command that does not do what you want, type u
and the old contents of the line are restored. You can also
undo an undo command. edit gives you a warning message when
a command affects more than one line of the buffer. Note
that commands such as write and quit cannot be undone.
To look at the next line in the buffer, type carriage
return. To look at a number of lines, type ^D (while holding
down the control key, press d) rather than carriage return.
This shows you a half-screen of lines on a CRT or 12 lines
on a hardcopy terminal. You can look at nearby text by exe-
cuting the z command. The current line appears in the middle
of the text displayed, and the last line displayed becomes
the current line; you can get back to the line where you
were before you executed the z command by typing ''. The z
command has other options: z- prints a screen of text (or 24
lines) ending where you are; z+ prints the next screenful.
If you want less than a screenful of lines, type z.11 to
display five lines before and five lines after the current
line. (Typing z.n, when n is an odd number, displays a total
of n lines, centered about the current line; when n is an
even number, it displays n-1 lines, so that the lines
displayed are centered around the current line.) You can
give counts after other commands; for example, you can
delete 5 lines starting with the current line with the com-
mand d5.
To find things in the file, you can use line numbers if you
happen to know them; since the line numbers change when you
insert and delete lines this is somewhat unreliable. You can
search backwards and forwards in the file for strings by
giving commands of the form /text/ to search forward for
text or ?text? to search backward for text. If a search
reaches the end of the file without finding text, it wraps
around and continues to search back to the line where you
are. A useful feature here is a search of the form /^text/
which searches for text at the beginning of a line. Simi-
larly /text$/ searches for text at the end of a line. You
can leave off the trailing / or ? in these commands.
SunOS 5.10 Last change: 11 Jun 2004 3
User Commands edit(1)
The current line has the symbolic name dot (.); this is most
useful in a range of lines as in .,$p which prints the
current line plus the rest of the lines in the file. To move
to the last line in the file, you can refer to it by its
symbolic name $. Thus the command $d deletes the last line
in the file, no matter what the current line is. Arithmetic
with line references is also possible. Thus the line $-5 is
the fifth before the last and .+20 is 20 lines after the
current line.
You can find out the current line by typing `.='. This is
useful if you wish to move or copy a section of text within
a file or between files. Find the first and last line
numbers you wish to copy or move. To move lines 10 through
20, type 10,20d a to delete these lines from the file and
place them in a buffer named a. edit has 26 such buffers
named a through z. To put the contents of buffer a after the
current line, type put a. If you want to move or copy these
lines to another file, execute an edit (e) command after
copying the lines; following the e command with the name of
the other file you wish to edit, that is, edit chapter2. To
copy lines without deleting them, use yank (y) in place of
d. If the text you wish to move or copy is all within one
file, it is not necessary to use named buffers. For example,
to move lines 10 through 20 to the end of the file, type
10,20m $.
OPTIONS
These options can be turned on or off using the set command
in ex(1).
-C Encryption option; same as the -x
option, except that vi simulates the
C command of ex. The C command is
like the X command of ex, except
that all text read in is assumed to
have been encrypted.
-l Set up for editing LISP programs.
-L List the name of all files saved as
the result of an editor or system
crash.
-R Readonly mode; the readonly flag is
set, preventing accidental
SunOS 5.10 Last change: 11 Jun 2004 4
User Commands edit(1)
overwriting of the file.
-r filename Edit filename after an editor or
system crash. (Recovers the version
of filename that was in the buffer
when the crash occurred.)
-t tag Edit the file containing the tag and
position the editor at its defini-
tion.
-v Start up in display editing state
using vi. You can achieve the same
effect by simply typing the vi com-
mand itself.
-V Verbose. When ex commands are read
by means of standard input, the
input is echoed to standard error.
This can be useful when processing
ex commands within shell scripts.
-x Encryption option; when used, edit
simulates the X command of ex and
prompts the user for a key. This key
is used to encrypt and decrypt text
using the algorithm of the crypt
command. The X command makes an edu-
cated guess to determine whether
text read in is encrypted or not.
The temporary buffer file is
encrypted also, using a transformed
version of the key typed in for the
-x option.
-wn Set the default window size to n.
This is useful when using the editor
over a slow speed line.
SunOS 5.10 Last change: 11 Jun 2004 5
User Commands edit(1)
+command | -c command Begin editing by executing the
specified editor command (usually a
search or positioning command).
- | -s Suppress all interactive user feed-
back. This is useful when process-
ing editor scripts.
The filename argument indicates one or more files to be
edited.
ATTRIBUTES
See attributes(5) for descriptions of the following attri-
butes:
/usr/bin/edit
____________________________________________________________
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
| Availability | SUNWcsu |
| CSI | Enabled |
|_____________________________|_____________________________|
/usr/xpg4/bin/edit
____________________________________________________________
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
| Availability | SUNWxcu4 |
| CSI | Enabled |
|_____________________________|_____________________________|
/usr/xpg6/bin/edit
____________________________________________________________
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
| Availability | SUNWxcu6 |
| CSI | Enabled |
|_____________________________|_____________________________|
SEE ALSO
ed(1), ex(1), vi(1), attributes(5), XPG4(5)
NOTES
The encryption options are provided with the Security
Administration Utilities package, which is available only in
the United States.
SunOS 5.10 Last change: 11 Jun 2004 6
Man(1) output converted with
man2html and wrapped by fishsponge
This page was generated on Wed Sep 12 11:24:36 GMT 2007
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