VI refers to "Visual Editor". VIM is an improved version of VI Editor. The VI editor is the standard editor under Linux system.

Opening the file:

You can use the command written below to open or edit an existing file. If the file doesn't exist, VI creates it when the edits are saved for the first time

vi <filename>

Three modes of VI and VIM

Here are the results from this week's race:

S. No	Modes	Description
`1`	Command Mode	`A Default Mode`
`2`	Insert Mode	`Type in new text`
`3`	Ex Mode	`Enter extended commands`

Cursor Movement in Command Mode

S. No	Movements
`1`	h left
`2`	j down
`3`	k up
`4`.	l right
`5`.	w word ahead
`6`.	b word back

Entering into Insert Mode

Command	Movements
`a`	append after the cursor
`i`	insert. before the cursor
`o`	open a line below
`A`.	append to end of the line
`I`.	insert at beginning of line
`O`.	open a line above

Leaving Insert Mode:

Command	Movements
`Esc`	Takes you from insert mode back to command mode

Change, Delete and Yank

	Change	Delete	Yank(Copy)
`Line`	cc	dd	yy
`Letter`	c1	d1	y1
`Word`	cw	dw	yw
`Sentence ahead`	c)	d)	y)
`Sentence behind`	c(	d(	y(
`Paragraph above`	c{	d{	y{
`Paragraph below`	c}	d}	y}

Understanding Three Mode of VI Editor