Mrtools (Multi remote tools) are a set of multi-threaded system tools to manage large distributed environments including file distribution collection and concurrent shell script or command execution. MrTools is written in Perl and utilizes ssh and rsync.
N-stage worm propagated via SSH. It executes commands in a given list of hosts and copies files to them with rsync. The paths for its propagation to the cluster are configurable. It offers a scalable/reliable transport API thanks to its adaptive algorithm