Net::SCP::Expect - Wrapper for scp that allows passwords via Expect.

    Example 1 - uses login method, longhand scp:

     my $scpe = Net::SCP::Expect->new;
     $scpe->login('user name', 'password');

    Example 2 - uses constructor, shorthand scp:

     my $scpe = Net::SCP::Expect->new(host=>'host', user=>'user', password=>'xxxx');
     $scpe->scp('file','/some/dir'); # 'file' copied to 'host' at '/some/dir'

    Example 3 - copying from remote machine to local host

     my $scpe = Net::SCP::Expect->new(user=>'user',password=>'xxxx');

    See the scp() method for more information on valid syntax.

    Expect 1.14. May work with earlier versions, but was tested with 1.14
    (and now 1.15) only.

    Term::ReadPassword 0.01 is required if you want to execute the
    interactive test script.

    This module is simply a wrapper around the scp call. The primary
    difference between this module and *Net::SCP* is that you may send a
    password programmatically, instead of being forced to deal with
    interactive sessions.

  Net::SCP::Expect->new(*option=>val*, ...)
    Creates a new object and optionally takes a series of options (see
    "OPTIONS" below). All "OBJECT METHODS" apply to this constructor.

    Set this to 1 if you want to automatically pass a 'yes' string to any
    yes or no questions that you may encounter before actually being asked
    for a password, e.g. "Are you sure you want to continue connecting
    (yes/no)?" for first time connections, etc.

  error_handler(*sub ref*)
    This sets up an error handler to catch any problems with a call to
    'scp()'. If you do not define an error handler, then a simple 'croak()'
    call will occur, with the last line sent to the terminal added as part
    of the error message.

    The method will immediately return with a void value after your error
    handler has been called.

    Sets the host for the current object

  login(*login, password*)
    If the login and password are not passed as options to the constructor,
    they must be passed with this method (or set individually - see 'user'
    and 'password' methods). If they were already set, this method will
    overwrite them with the new values.

    Sets the password for the current user, or the passphrase for the
    identify file if identity_file option is specified in the constructor

    Sets the user for the current object

    Copies the file from source to destination. If no host is specified, you
    will be using 'scp' as an expensive form of 'cp'.

    There are several valid ways to use this method

   Local to Remote
    scp(*source, user@host:destination*);

    scp(*source, host:destination*); # User already defined

    scp(*source, :destination*); # User and host already defined

    scp(*source, destination*); # Same as previous

   Remote to Local
    scp(*user@host:source, destination*);

    scp(*host:source, destination*);

    scp(*:source, destination*);

    auto_quote - Auto-encapsulate all option values and scp from/to
    arguments in single-quotes to insure that special characters, such as
    spaces in file names, do not cause inadvertant shell exceptions. Default
    is enabled. Note: Be aware that this feature may break backward
    compatibility with scripts that manually quoted input arguments to work
    around unquoted argument limitations in 0.12 or earlier of this module;
    in such cases, try disabling it or update your script to take advantage
    of the auto_quote feature.

    auto_yes - Set this to 1 if you want to automatically pass a 'yes'
    string to any yes or no questions that you may encounter before actually
    being asked for a password, e.g. "Are you sure you want to continue
    connecting (yes/no)?" for first time connections, etc.

    cipher - Selects the cipher to use for encrypting the data transfer.

    host - Specify the host name. This is now useful for both
    local-to-remote and remote-to-local transfers.

    identity_file - Specify the identify file to use.

    no_check - Set this to 1 if you want to turn off error checking. Use
    this if you're absolutely positive you won't encounter any errors and
    you want to speed up your scp calls - up to 2 seconds per call (based on
    the defaults).

    option - Specify options from the config file. This is the equivalent of

    password - The password for the given login. If not specified, then
    identity_file must be specified or an error will occur on login. If both
    identity_file and password are specified, the password will be treated
    as the passphrase for the identity file.

    port - Use the specified port.

    preserve - Preserves modification times, access times, and modes from
    the original file.

    protocol - Specify the ssh protocol to use for scp. The default is
    undef, which simply means scp will use whatever it normally would use.

    recursive - Set to 1 if you want to recursively copy entire directories.

    scp_path - The path for the scp binary to use, i.e.: /usr/bin/scp,
    defaults to use the first scp on your $PATH variable.

    subsystem - Specify a subsystem to invoke on the remote system. This
    option is only valid with ssh2 and openssh afaik.

    terminator - Set the string terminator that is attached to the end of
    the password. The default is a newline.

    timeout - Sets the timeout value for your scp operation. The default is
    10 seconds.

    timeout_auto - Sets the timeout for the 'auto_yes' option. I separated
    this from the standard timeout because generally you won't need nearly
    as much time as you would for a standard timeout, otherwise your script
    will drag considerably. The default is 1 second (which should be

    timeout_err - Sets the timeout for the additional error checking that
    the module does. Because errors come back almost instantaneously, I
    thought it best to make this a separate option for the same reasons as
    the 'timeout_auto' option above. The default is 'undef'.

    Setting it to any integer value means that your program will exit after
    that many seconds *whether or not the operation has completed*. Caveat

    user - The login name you wish to use.

    verbose - Set to 1 if you want verbose output sent to STDOUT. Note that
    this disables some error checking (ala no_check) because the verbose
    output could otherwise be picked up by expect itself.

    The -q option (disable progress meter) is automatically passed to scp.

    The -B option may NOT be set. If you don't plan to send passwords or use
    identity files (with passphrases), consider using *Net::SCP* instead.

    In the event a new version of *Net::SSH::Perl* is released that supports
    scp, I recommend using that instead. Why? First, it should be a more
    secure way to perform scp. Second, this module is not the fastest, even
    with error checking turned off. Both reasons have to do with TTY

    Also, please see the Net::SFTP module from Dave Rolsky. If this suits
    your needs, use it instead.

    There are a few options I haven't implemented. If you *really* want to
    see them added, let me know and I'll see what I can do.

    Add exception handling tests to the interactive test suite.

    At least one user has reported warnings related to POD parsing with Perl
    5.00503. These can be safely ignored. They do not appear in Perl 5.6 or

    Probably not thread safe. See RT bug #7567 from Adam Ruck.

    Thanks to Roland Giersig (and Austin Schutz) for the Expect module. Very

    Thanks also go out to all those who have submitted bug reports and/or
    patches. See the CHANGES file for specifics.

    Net::SCP::Expect is licensed under the same terms as Perl itself.

    2005-2008 Eric Rybski <>, 2003-2004 Daniel J. Berger.

    Eric Rybski <>. Please send all module inquries to me.

    Daniel Berger

    djberg96 at yahoo dot com

    imperator on IRC

    Net::SCP, Net::SFTP, Net::SSH::Perl, Net::SSH2