3.8.3.8 -pw: specify a password
A simple way to automate a remote login is to supply your password on the command line. This is not recommended for reasons of security. If you possibly can, we recommend you set up public-key authentication instead. See chapter 8 for details.
Note that the -pw option only works when you are using the SSH protocol. Due to fundamental limitations of Telnet and Rlogin, these protocols do not support automated password authentication.