canssh - can I ssh into the following hosts?

Update: the script has been merged to the sysadmin-util repository.

Do you have a list of hosts and you want to execute a command like

cat /etc/debian_version

on all of them? Wouldn't it be good to know whether you can ssh to all of them before writing the shell loop like

for h in $(cat hosts); do echo -n "$h "; ssh $h "cat /etc/debian_version"; done

In that case this bash script could be of use to you. It produces output like this: