via http://www.dcemulation.org/?title=Main_Page

nold, a German programmer, has released a set of new Dreamcast tools for Linux, over at sega-dc.de.

He has modified cdirip to be able to burn Dreamcast homebrew. His second tool is called mksdiso, it can be used to create SDIso files, which in turn can be used in DreamShell.

Check both links above to download these tools.