1: Both ways are valid: 
$s1 = Net::OpenSSH->new($host, ...);
$s2 = Net::OpenSSH->new(host => $host, ...);

[download]

2: No, by default Net::OpenSSH let's ssh ask you questions. If you want batch mode you have to state it: 

$s = Net::OpenSSH->new($host, batch_mode => 1, ...)

[download]

3: Yes because Net::OpenSSH only works with version 2 of the protocol. SSH v1 is not supported.

4: The connection is closed automatically when the object goes out of scope. You can close it explicitly if you want: 

$s->disconnect;

[download]

update: disconnect method is only available in the latest development versions.

Also, if you need to connect using SSH v1, my other module Net::SSH::Any does support it.

In reply to Re^3: using scp package and options by salva
in thread using scp package and options by toohoo

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