LinuxQuestions.org - [SOLVED] bash script to work on server

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- - bash script to work on server (https://www.linuxquestions.org/questions/programming-9/bash-script-to-work-on-server-4175735130/)

Quote:

Originally Posted by metaed (Post 6491096)

Yes, it was mentioned that it's a terminal server. In the past, I have sent remote commands to execute on a Cisco switch over a TELNET circuit. For example to backup the configuration:

Code:

(

echo enable                    ; sleep 0.1

echo "$secret"                  ; sleep 0.1

echo terminal length 0          ; sleep 0.1

echo show running-config        ; sleep 30.0

echo show startup-config        ; sleep 30.0

echo quit                      ; sleep 0.1

) | telnet $ip >$out 2>&1

Of course this is a terrible idea nowadays. The enable-secret goes over the wire as plaintext, and somebody is always listening (or that is what you should assume). OP quite understandably wants to do it over an ssh-encrypted circuit.

Thanks for this, I will also try this, but with telnet can we also make changes to the configuration ?

Quote:

Originally Posted by sag2662 (Post 6491174)

I will also try this, but with telnet can we also make changes to the configuration ?

You can type anything you want to the remote, including answers to prompts. In the example above:

Code:

echo enable

echo "$secret"

the "enable" prompts for the enable-secret, which is given on the next line.

But don't use telnet because the entire exchange goes over the network as plain text. Figure out how to do it over ssh.