Executes specified command on a group of computers using remote shell methods such as rsh or ssh.

dsh can parallelise job submission using several algorithms, such as using fan-out method or opening as much connections as possible, or using a window of connections at one time. It also supports "interactive mode" for interactive maintenance of remote hosts.

This tool is handy for administration of PC clusters, and multiple hosts.

http://www.netfort.gr.jp/~dancer/software/dsh.html