This is a very interesting announcement:

OPSWARE INTRODUCES NEW GLOBAL SHELL TECHNOLOGY FOR CENTRALIZED MANAGEMENT OF LINUX, UNIX, AND WINDOWS You don’t see much in the way of innovation in command-line shells but this looks extremely powerful. Cross-platfform, remote automation, supports all the leading current shells. Definitely worth a read if the scripted management of large-scale heterogeneous environments is something which daily breaks your heart.