[Yum] Requesting required resources

[Karsten Jeppesen]

Hello Seth,

Can I ask yum to download something that provides what I specify?

An example may be better. I may know that I need XFree86-devel.
But XFree86-devel is provided by several packages. XFree86-devel.rpm and 
xorg-x11-devel.rpm
and what I really want (but of course don't know) is that it is the 
latter I want. (given that I am in an xorg environment)

Karsten