pierre@guepard:~/prog/ruby$ ./net-ssh.sh
/var/lib/gems/1.8/gems/net-ssh-1.1.1/lib/net/ssh/userauth/services.rb:129: warning: `*' interpreted as argument prefix
/var/lib/gems/1.8/gems/net-ssh-1.1.1/lib/net/ssh/connection/driver.rb:74: warning: `&' interpreted as argument prefix
/var/lib/gems/1.8/gems/net-ssh-1.1.1/lib/net/ssh/host-key-verifier.rb:89:in `load_keys_from': private method `split' called for nil:NilClass (NoMethodError)        from /var/lib/gems/1.8/gems/net-ssh-1.1.1/lib/net/ssh/host-key-verifier.rb:87:in `map'
        from /var/lib/gems/1.8/gems/net-ssh-1.1.1/lib/net/ssh/host-key-verifier.rb:87:in `load_keys_from'
        from /var/lib/gems/1.8/gems/net-ssh-1.1.1/lib/net/ssh/host-key-verifier.rb:81:in `keys'
        from /var/lib/gems/1.8/gems/net-ssh-1.1.1/lib/net/ssh/host-key-verifier.rb:9:in `verify'
        from /var/lib/gems/1.8/gems/net-ssh-1.1.1/lib/net/ssh/lenient-host-key-verifier.rb:9:in `verify'
        from /var/lib/gems/1.8/gems/net-ssh-1.1.1/lib/net/ssh/transport/kex/dh.rb:165:in `verify_server_key'
        from /var/lib/gems/1.8/gems/net-ssh-1.1.1/lib/net/ssh/transport/kex/dh.rb:232:in `exchange_keys'
        from /var/lib/gems/1.8/gems/needle-1.3.0/lib/needle/lifecycle/proxy.rb:60:in `__send__'
         ... 34 levels...
        from /var/lib/gems/1.8/gems/net-ssh-1.1.1/lib/net/ssh/session.rb:106:in `initialize'
        from /var/lib/gems/1.8/gems/net-ssh-1.1.1/lib/net/ssh.rb:47:in `new'
        from /var/lib/gems/1.8/gems/net-ssh-1.1.1/lib/net/ssh.rb:47:in `start'
        from ./net-ssh.sh:7