Buy some sort of liscense to sell linux distros

Do i have to buy some sort of liscense to sell linux distros?

I think it depends on what you are actually trying to sell.

If you intend to sell the Linux distro itself, then that is illegal, because you don't own it. In a nutshell, the GNU Public License prevents anyone from "owning" Linux. But at the same time, everyone is free to use it.

On the other hand, if you are selling the CDs or DVDs with Linux on them as a service, say to people that don't want to download it, then that's okay. Linux is okay to distribute, and you can charge for your distrubution costs. But you cannot charge for the software itself. And you have to make sure the licensing terms are included with the software.