Linux Study Notes: Know VI

Common vi usage

Normal Mode
H left
J lower
K
L right
0 move to the beginning of the row
$ Move to the end of a row
H top screen
M Center
L The lowest Screen
Last line of G File
/Work downward search
? Work search up
Move gg to the first line of the file

Edit mode
A, I, r, o, A, I, R, O
Enter edit mode
Dd deletes the current row of the cursor
Ndd Delete n rows
Yy copy the current row
Nyy copies n rows
P, P Paste
U undo
[Ctrl] + r redo the previous action
[Ctrl] + z pause and exit

Command mode
: W save
: W! Force save
: Q! Do not save and exit
: Wq! Save and exit
: E! Restore original file
: W filename save
: Set nu
: Set nonu cancel row number
ZZ save and exit
: Set nohlsearch permanently disables highlight
: Sp open two documents at the same time
[Ctrl] + w two document changes
: Nohlsearch temporarily disables highlighted display