Fuctions of VI editor(Linux)
Gerneral fuction of VI editor
h Move cursor one character to left
j Move cursor one line down
k Move cursor one line up
l Move cursor one character to right
w Move cursor one word to right
b Move cursor one word to left
0 Move cursor to beginning of line
$ Move cursor to end of line
x Delete character
dw Delete word
dd Delete current line
iq! Quit without write
!wq Quit vi, write and save file
:nu Number Of line