No you don't...

No fooling this was already done 30 odd years ago in a system called PICK. Look it up. I worked with PICK for a few years in the mid to late 80's and while it did some things well, it did other things very poorly (i.e. OS level stuff).

It seems like a great idea until you need some of the finer things available at the OS level. Best to leave SQL to do what it does best.