A systems administrator is creating new user accounts on several Linux machines and wants to...

bashfor server in $(cat /home/user/serverslist) do for user in $(cat /home/user/userslist) do sudo useradd $user done done

bashfor server in $(cat /home/user/serverslist) do ssh -i user@$server "for user in $(cat /home/user/userslist) do sudo useradd $user done; exit" done

bashfor server in $(cat /home/user/serverslist) do scp /home/user/userslist user@$server:/tmp ssh -i user@$server "for user in $(cat /tmp/userslist) do sudo useradd $user done; exit" done

bashssh user@$(cat /home/user/serverslist) "sudo useradd $(cat /home/user/userslist); exit"