Vim indent xml file

Question

I am learning Vim but I thought this was a simple task but I cannot get it to work. I have browser SO but the solutions are not working for me.

I am trying to correc

Answer 1

Jesse Hogan's answer is good, but I'd rather more simple answer:

While you are in vim and your XML file is opened, in normal mode write this:

:%!xmllint --format %

then press Enter. All of your XML file will be formatted.

remember you should have installed xmllint before.