This module makes use of the RFC_ABAP_INSTALL_AND_RUN Remote Function Call to execute arbitrary SYSTEM commands. RFC_ABAP_INSTALL_AND_RUN takes ABAP source lines and executes them. It is common for the the function to be disabled or access revoked in a production system. It is also deprecated.
The module requires the NW RFC SDK from SAP as well as the Ruby wrapper nwrfc (http://rubygems.org/gems/nwrfc).