OK this is going to seem a bit weird, but yes, there's now a deployer that makes it possible to take a bash script and make it into a Web service. Sumedha Rubasinghe, Mr. Data Services in WSO2, has been having fun making this work in WSO2 WSAS. His blog says that the Windows port isn't still working but its possible (and may be on the way). This is all early code- if you find it useful and interesting, let Sumedha know and help get it right!
Very cool .. goes to show how easy it is to embed and extend Apache Axis2.