Unix Vi Editor commands

To Start vi
1. vi filename Create or Edit filename starting at line 1
2. vi -r filename Recover filename that was being edited
when system crashed


To Exit vi
1. :x<return> Quit vi, writing out modified file to file
named in original invocation
2. :wq<return> Quit vi, writing out modified file to file
named in original invocation
3. :q<return> Quit or exit vi
4. :q!<return> Quit vi even though latest changes have not
been saved for this vi call



 cursor Movment
1. j or <return>
[or down-arrow]
Move cursor down one line
2. k[or up-arrow] Move cursor up one line
3. h or<backspace>
[or left-arrow]
Move cursor left one line
l or<space>[or right-arrow] Move cursor right one line
4. 0(zero) Move cursor to start of current line(the one
with the arrow)
5. $ Move cursor to end of the current line
6. w Move cursor to beginning of next word
Basic vi commands7. b Move cursor back to beginning of preceding
word
8. :0<return> or 1G Move cursor to first line in file
9. :n<return>or nG Move cursor to line n in file
10. :$<return>or G Move cursor to last line in file


Screen movement
1. ^f Move forward one screen
2. ^b Move backward one screen
3. ^d Move down(forward) one half screen
4. ^u Move up(back)one half sreen
5. ^l Redraws the screen
6. ^r Redraws the screen,removing the deleted
lines 

Text Editing
1. u Undo whatever you just did(a simple toggle)
Inserting or Adding text
1. i Insert text before cursor,until<esc>hit
2. I Insert text at beginning of current
line,until<esc>hit
3. a Append text after cursor,until<esc>hit
4. A Append text to end of current
line,until<esc>hit
5. o Open and put text in a new line below
current line,until<esc>hit
6. O Open and put text in a new line above
current line,until<esc>hit

Basic vi commandsChanging the text
1. r Replace single character under cursor(no
<esc>needed)
2. R Replace characters,starting with current
cursor position,until<esc>hit

3. cw Change the current word with new
text,starting with the character under
cursor,until<esc>hit

4. cNw Change N words beginning with the
character under cursor,until<esc>hit

5. c change(replace)the characters in the current line,until<esc>hit

6. cc change(replace)the characters in the current line,stopping when <esc>hit

7. Ncc or cNc change(replace)the next N lines,starting
with the current line,stopping when
<esc>hit


Deleting the text
1. x Delete single character under cursor
2. Nx Delete N characters, starting with character
under cursor
3. dw Delete the single word beginning with
character under cursor
4. dNw Delete N words beginning with character
under cursor
5. D Delete the remainder of the line,starting
with current cursor position
6. dd Delete entire current line
7. Ndd or dNd Delete N lines beginning with the current
line
Basic vi commandsCutting and pasting the text
1. yy Copy (yank,cut) the current line into buffer
2. Nyy or yNy copy(yank,cut) the next N lines,including
the current line, into the buffer
3. p put(paste) the lines in the buffer into the
text after the current line

Searching the text
1. /string Search forward for occurence of string in text
2. ?string Search backward for occurence of string in text
3. n Move to next occurence of search string
4. N Move to next occurence of search string in opposite direction

Determining line numbers
1. :.= Returns line number of current line at bottom of screen
2. := Returns the total number of lines at bottom of the screen
3. ^g Provides the current line number, along with the total number of lines,in the file at the bottom of the screen


Saving and reading files
1. :r filename<return> Read file named filename and insert after
current line(the line with arrow)

Basic vi commands

2. :w<return> Write current contents to a file named in
original vi call

3. :w newfile<return> Write current contents to a new file named
newfile

4. :12,35w smallfile<return> Write the contents of the line numbered 12
through 35 to a new file named smallfile
5. :w! prevfile<return> Write current contents over a pre-existing
file named prevfile

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