Binary package “dsh” in ubuntu lucid

dancer's shell, or distributed shell

 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