Move entire line up and down in Vim

Question

In Notepad++, I can use Ctrl + Shift + Up / Down to move the current line up and down. Is there a similar command to this in Vim?

Answer 1

add the following to ~/.vimrc file (make sure you have no mapping for n,m )

nmap n :m +1
nmap m :m -2

now pressing n key will move a line down and m will move a line up.