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Introduction to <strong>Unix</strong><br />
! Communications<br />
$ mail send and receive mail<br />
$ write signal o<strong>the</strong>r users<br />
VI Editing<br />
Entering vi<br />
$ vi filename<br />
Command Mode<br />
! Help<br />
^A display help screen<br />
(: !cat .vihelp^M)<br />
! Moving cursor<br />
h move left a character b back a word<br />
j move down a character ^F forward a screen<br />
k move up a character ^B backward a screen<br />
l move right w forward a word<br />
! Deleting Text<br />
x delete character at cursor dd delete a line<br />
! Replace Text<br />
r replace a character R enter REPLACE MODE<br />
! Inserting Text<br />
i INPUT MODE before cursor o INPUT MODE line below<br />
a INPUT MODE after cursor O INPUT MODE line above<br />
! Control of Changes<br />
u undo last change U restore current line<br />
. repeat last change<br />
! Moving Text<br />
Y yank line into buffer<br />
p put buffer line below P put buffer line above<br />
! O<strong>the</strong>r commands<br />
J join <strong>with</strong> next line<br />
^G line number information<br />
- toggle case<br />
! Searching<br />
/text^M search for next occurrence of text string<br />
?text^M search for previous occurrence of text string<br />
n repeat last search command<br />
N scan in opposite direction<br />
! Saving and Leaving vi<br />
:w^M write (update) file<br />
:wq^M update and exit file<br />
:q!^M quit <strong>with</strong>out update<br />
Input or Replace mode<br />
! Input Editing<br />
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