[CentOS] bsd mkfile command in centos - a wish

I enjoy the convenience of mkfile command found in Irix and BSD based  
distros.

This command allows me to make files of any size;

usage: mkfile [-nv] size[b|k|m|g] filename ...

I've looked here and there and can't seem to find it for Centos.

Any one have ideas on were I can get at least the source for it?

I got something off a BSD ports page but its for BSD type systems.