Unix VI Commands

VI COMMANDS
COMMAND	PURPOSE
:x	Quits vi,writing modified file.
:wq	Quits vi,writing modified file. It behaves exactly like :x.
:q	Quit ( or exit) vi
:q!	Quits vi without saving the latest changes.
ZZ	saves and exits. This is known as last command.
:w	Writes the modified file and remains in the command mode.
h	Move cursor left one character.
j	Move cursor down one line.
k	Move cursor up one line.
i	Moves cursor right one character.
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	Moves cursor back  to beginning of preceding word .
:0 or 1G	Moves cursor to first line in the file.
:n or nG	Moves cursor to line n.
:$ or G	Moves cursor to last line in file.
^f	Moves forward one screen.
^b	Moves backward one screen.
^d	Moves down (forward) one half screen.
^u	Moves up (back) one half screen.
u	UNDO WHATEVER YOU JUST DID; a simple toggle .
ctrl r	Redo
i	Insert text before cursor , until you press <Esc>
a	Appends text after cursor , until you press <Esc>
o	Open and puts text in a new line below current line, until you press <Esc>
O	Opens and puts text in a new line above current line , until you press <Esc>
r	Replaces single character under cursor.
R	Replaces character, starting with current cursor position , until you press<Esc>
x	Deletes single character under cursor.
dd	Delete entire current line
yy	copies (yank, cut) the current line into the buffer.
p	puts (paste) the line(s) in the buffer into the text after the current line.
:r file name	Reads file named filename and insert after current line (the line with cursor)
:w	Writes current contents to file.
:w newfile	Writes current contents to a new file named newfile .
:w! prevfile	Writes current contents over a pre-existing file named pervfile.
/string	Searches forward for occurrence of string in text.
?string	Searches backward for occurance of string in text.
n	Moves to next occurrence of search string
N	Moves to next occurrence of search string in opposite direction.
.(dot)	Any single character except newline.
*	Zero or more occurrence of any character.
[.....]	Any single character specified in the set.
[! .]	Any single character not specified in the set.
^	Anchor-beginning of the line.
$	Anchor-end of line.
[A-Z]	The SET from capital A to capital z.
[a-z]	The SET from lowercase a to lowercase z.
[0-9]	the SET from from 0 to 9(All numerals).
[0-9 A-Z]	The SET contains all capital letters and digits and a space.
[A-Z][a-zA-Z]	In the second character position , the SET containing all letters
/Hello/	Matches if the line containing the value Hello.
/^TEST$/	Matches if the line contains TEST by itself.
/^[a-zA-Z]/	Matches if the line starts with any letter.
/^[a-z]*/	Matches if the first character of the line is a-z and there is atleast one more of any character following it.
/2134$/	Matches if line ends with 2134.
/[0-9]*	Matches if there are zero or more numbers in the line.
/^[!#]/	Matches if the first character is not a # in the line.
:.=	Returns line number of current line at bottom of screen.
:=	Return the total number of lines at bottom of screen.
^g	Provides the current line number , along with the total number of lines, in the file at the bottom of the screen.