Starts an FTP session and does one of the following:

    o  Displays the FTP prompt. You can enter FTP commands to
       customize your environment and FTP command processing.

    o  Establishes a connection to the specified remote host.

    For help with individual FTP commands, type the following:

    $ FTP
    FTP> HELP

    DCL Format

      FTP  [ host [ port ] ] [ /USERNAME=remote_user_name ]

           [ /PASSWORD=password ]

           [ /INPUT=input_filespec ]

    UNIX Format

      ftp  [ host [ port ] ]