非交互式ssh到服务器但交互式

Question

I understand all the security risks using ssh in this way, but what I need at the moment is a few line (bash) shell script capable to log-in to the target server and just do a foo command and get back to the source host, something like:

while true
do
   ssh target foo   # Here I get the prompt for a password which
                    # I would like to give non-interactively
   sleep 1
done

I do not want to use the ssh key based authentication because what I truly need is to simulate once a second (or so) the interactive log-in process (but not-interactively!).

Answer 1

You'll need to script it with expect in something like, say, perl .

Edit: You could also try scripting expect directly in bash .

Answer 2

You have to edit the SSH server to allow login based only on a key and not from a password.

Try to see if this can help you.

Of course if you can't edit the server configuration, you need to check other solutions

Answer 3

sshpass is designed to provide a password to ssh programatically, instead of interactively. So you can replace ssh target foo by eg sshpass -f passwordfile ssh target foo .