If you like me, sometimes requires typing same command in multiple ssh connections to remote servers, this is a useful tool: ClusterSSH. HomePage: http://sourceforge.net/projects/clusterssh/
At this moment I’m in Ubuntu 10.4, so:
Simple use aptitude to install the package:sudo aptitude install clusterssh
Just open your regular terminal and type in this command:cssh -l <username> <server1> <server2> …
That will open several terminals and also will open CSSH window. So, whatever you type in that windows will be reflected in every server!!!
As always you also can edit /etc/clusters file to put your own configurations, for more information visit the Home Page of the project.
This is a good tool to speed things up when handling multiple servers, however you should be very CAREFUL with it.