Perl SCP ERROR(Asking to Continue?)

xomo has asked for the wisdom of the Perl Monks concerning the following question:

Hi All, Here's is what I am doing

my $username = "user";
my $password= "pass";
my $host="xxx.xxx.xxx.xxx";

my $scpe =  Net::SCP::Expect->new(user => $username,
                                    password => $password,
                                    preserve => 1,
                                   recursive => 1,
                                  verbose=>1,
                  auto_yes=>1);

$scpe->scp("$file","$host:./drop/drop.txt");
[download]

When I run this code there is no error I am using unix box, $file is in my directory and have full permissions, also I have changed the directory to temp in unix box but when somebody else runs this code they get Problem performing scp: Are you sure you want to continue connecting (yes/no)? at scp.pl line 242 I am very confused why is it happening, as this error is not received by me.

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Re: Perl SCP ERROR(Asking to Continue?) by salva (Canon) on Feb 21, 2011 at 20:05 UTC
The public key of the remote server has not yet been saved on the `~/.ssh/known_hosts` file. Just `ssh` to the remote machine as user `$username` manually once, replying "yes" at the "Are you sure...?" prompt.	[reply] [d/l] [select]
Re^2: Perl SCP ERROR(Asking to Continue?) by xomo (Initiate) on Feb 21, 2011 at 20:29 UTC
I opened the ~/.ssh/known_hosts it does not have anything in it but for me it is still working the same way. Secondly, is there any other way to add as I dont want to give the password to everyone for running the script?	[reply]
Re^3: Perl SCP ERROR(Asking to Continue?) by salva (Canon) on Feb 21, 2011 at 20:40 UTC
The easiest way is to, in some way, get `ssh` called with the `StrictHostKeyChecking` option set to `no` (see ssh_config(5)). Though using that option can have a negative impact on the security of the SSH protocol. I usually disregard its usage unless its implications are really understood.	[reply] [d/l] [select]