Vim Shortcuts

1. yank all lines to clipboard

   :%y+

   
   
2. Copy multiple line

   V (Start highlight) + normal move keys to select + y 

   
   
3. Replace word in file

    :r(use % to replace whole file)s/foo/bar/a 




4. Replace word in file

    CTRL-V (CTRL-G is CTLV-V is used for paste on windows)+Select + I(UpperCase)+ comment+ESC