Vim vi how to reload a file your editing
5.8. How do I reload/re-edit the current file?
You can use the ":edit" command, without specifying a file name, to reload
the current file. If you have made modifications to the file, you can use
":edit!" to force the reload of the current file (you will lose your
For more information, read
from - http://vimdoc.sourceforge.net/cgi-bin/vimfaq2html3.pl#5.8