[vi] Basic vi command

See below the basic you should (me anyway) need to get started with vi.
I usually use vim(vi improved) but in some Sun servers, you may have only vi available.

• h

Move the cursor to the left one character position

• j
  

Move the cursor down one line.

• k

Move the cursor up one line.

• l
  

Move the cursor to the right one character position.

• X
  

Delete the character before the cursor.

• x
  

Delete character under the cursor. A count tells how many characters to delete. The characters will be deleted after the cursor.

• a
  

Enter insert mode, the characters typed in will be inserted after the current cursor position. A count inserts all the text that had been inserted that many times.

• i
  

Enter insert mode, the characters typed in will be inserted before the current cursor position. A count inserts all the text that had been inserted that many times.

You can find the above here