Command mode

To scroll through document you use (small letters only!!!)

j = down one line

k = up one line

l = move one space to the right

h = move one space to the left

x = delete character

r = replace character

i = insert character(s)

u = undo

dd = delete line

yy = yank line (save it in buffer and paste with p command)

p = paste

s = delete and replace with a character typed subsequently

/[character string] = search for indicated character string in the file

n = search again for the character string in the buffer selected by /

To perform any of these multiple times use a number preceding the command.

For example,

10x = delete next 10 characters

25j = go down 25 lines

 4s = delete the next four characters and replace with as many characters as typed until Esc is hit.

Type Q or Esc to enter Execution mode

Execution mode

To quit the document type

:q (quit without making any changes)

:q! (quit and do not save any changes made)

:w (write the changes to the document, but do not quit)

:wq (write changes and quit)

:set number (indicate line numbers on left margin)

:1,10w [filename] (write line numbers 1 through 10 to a file)

:r [filename] (insert contents of filename here)

:1 (go to line number 1 or any indicated line number)

:1,$s/a/b/g (global replacement of a by b from line one to the end)

:.,$s/a/b/g (global replacement of a by b from the current line to the end)

Type visual or Esc to reenter Command mode