VI Editor Commands
VI Editor Commands
VI Editor Commands
To Start vi
To use vi on a file, type in vi filename. If the file named filename exists, then the first
page (or screen) of the file will be displayed; if the file does not exist, then an empty file
and screen are created into which you may enter text.
* vi filename edit filename starting at line 1
vi -r filename recover filename that was being edited when system crashed
To Exit vi
Usually the new or modified file is saved when you leave vi. However, it is also possible
to quit vi without saving the file.
Note: The cursor moves to bottom of screen whenever a colon (:) is typed. This type of
command is completed by hitting the <Return> (or <Enter>) key.
* :x<Return> quit vi, writing out modified file to file named in original invocation
:wq<Return> quit vi, writing out modified file to file named in original invocation
:q<Return> quit (or exit) vi
* :q!<Return> quit vi even though latest changes have not been saved for this vi call
Unlike many of the PC and MacIntosh editors, the mouse does not move the cursor
within the vi editor screen (or window). You must use the the key commands listed
below. On some UNIX platforms, the arrow keys may be used as well; however, since vi
was designed with the Qwerty keyboard (containing no arrow keys) in mind, the arrow
keys sometimes produce strange effects in vi and should be avoided.
If you go back and forth between a PC environment and a UNIX environment, you may
find that this dissimilarity in methods for cursor movement is the most frustrating
difference between the two.
In the table below, the symbol ^ before a letter means that the <Ctrl> key should be held
down while the letter key is pressed.
j or <Return>
* move cursor down one line
[or down-arrow]
* k [or up-arrow] move cursor up one line
h or <Backspace>
* move cursor left one character
[or left-arrow]
l or <Space>
* move cursor right one character
[or right-arrow]
* 0 (zero) move cursor to start of current line (the one with the cursor)
*$ move cursor to end of current line
w move cursor to beginning of next word
b move cursor back to beginning of preceding word
:0<Return> or 1G move cursor to first line in file
:n<Return> or nG move cursor to line n
:$<Return> or G move cursor to last line in file
Screen Manipulation
The following commands allow the vi editor screen (or window) to move up or down
several lines and to be refreshed.
^f move forward one screen
^b move backward one screen
^d move down (forward) one half screen
^u move up (back) one half screen
^l redraws the screen
^r redraws the screen, removing deleted lines
Unlike PC editors, you cannot replace or delete text by highlighting it with the mouse.
Instead use the commands in the following tables.
Perhaps the most important command is the one that allows you to back up and undo
your last action. Unfortunately, this command acts like a toggle, undoing and redoing
your most recent action. You cannot go back more than one step.
* u UNDO WHATEVER YOU JUST DID; a simple toggle
The main purpose of an editor is to create, add, or modify text for a file.
The following commands allow you to insert and add text. Each of these commands puts
the vi editor into insert mode; thus, the <Esc> key must be pressed to terminate the entry
of text and to put the vi editor back into command mode.
* i insert text before cursor, until <Esc> hit
I insert text at beginning of current line, until <Esc> hit
* a append text after cursor, until <Esc> hit
A append text to end of current line, until <Esc> hit
* o open and put text in a new line below current line, until <Esc> hit
* O open and put text in a new line above current line, until <Esc> hit
Changing Text
Deleting Text
Other Commands
Searching Text
Being able to determine the line number of the current line or the total number of lines in
the file being edited is sometimes useful.
:.= returns line number of current line at bottom of screen
:= returns the total number of lines at bottom of screen
provides the current line number, along with the total number of lines,
^g
in the file at the bottom of the screen
These commands permit you to input and output files other than the named file with which you
are currently working.