Is there a 1.05b Linux Dedicated Server? If there is, where can i get it? i havnt seen any downloads for it...

Nope, there has never been a linux ded. server for 1.0.5b..

so there's no way to set up a linux server on this version of the game?

You might be able to emulate Soldat 1.0.5b, but there's no proper way to host a linux server for 1.0.5b