cssh (cluster ssh) enables one to operate multiple ssh simultaneously.
% sudo pacman -S clusterssh
3 lines of configuration in
~/.csshrc (the hostnames are specified in ~/.ssh/config):
clusters = exp lab exp = exp01 exp02 exp03 exp04 exp05 exp06 exp07 exp08 exp09 exp10 lab = exp itigo
And I got this with
cssh lab command:
The input in left-top window is duplicated and sent to all other terminals.