Very useful thing if you want to extend your usage of VIM (which is, by my opinion, best editor in the world )
Basically it is acting as plugin to vim, after you run vim just type “:NERDTree” and see the magic – it will open tree with all files and directories from location where you run it.
After that you place marker to some file, press Enter and in right-tab that file will be opened.
Select some code by entering visual editor “ctrl+v”, copy it by typing “y” and then press “:q!” (you will leave that file).
Now, open another file by placing marker to it and pressing Enter, and press “p” – it will paste previous copied code to new file.
Installation of NERDTree vim plugin :
Download it from official website , create ~/.vim directory and unzip it there, and voila!