UNIX for Dummies Questions & Answers

Hello,

I'm sure you'd have received a lot of questions like this, but I couldn't find anything relevant to my problem in the first search. Sorry in advance if this is a repeated question.

I'm trying to do an SSH inside a shell script and expect the shell script to connect to a remote server (for deleting a few files and another script for reboot). I have the following challenges:

1. I know the username/password for the remote server, but I cannot pass it via terminal.
2. I've done the RSA authentication in the past, but the server where I'm writing the script doesn't have RSA authentication enabled (in the

Code:

/etc/ssh/sshd_config

file). So, creating the

Code:

ssh-keygen

and pasting the public key inside authorized_keys doesn't work for me.
3. I don't have

Code:

spawn

or

Code:

sshpass

command in the server. When I try these commands, the terminal says unknown command.

I guess there's no way I can write the script here! Let me know if you think otherwise!

OS: GNU Linux

PS: This is my first question here!

Thanks,
B.

Yes, we answer this a lot. To discourage scripting with a password, it is read from /dev/tty not stdin.

Unfortunately, I don't have expect as well (I'm really not helping here, am I?)



Can you explain on how to set up the reverse trust?

Hi
some time ago I have bypassed a problem using jsch.jar in a Java procedure.

Reverse trust is to allow the remote host PPKey access to the local host, so scripts there can connect without password and send commands, data from commands on the remote system, etc. Pull not push.

You can use 'ssh localhost -tt' or any other tool that creates a new tty. Expect is open source, so you can get it. What o/s?

Thanks guys! I somewhat realized the reverse trust in a different way and like DGPickett said, I pulled (hosted the original script on the remote) and it worked. Thanks very much!

Always many ways to skin the cat in UNIX.


It's good to destroy the little mysteries, too!