Telnet Shell script

Question

I am connecting to a Denon DN-700H network Audio player over IP and have managed to change stations using the following commands in OS X Terminal:

telnet
telnet 10.22.71.11

which connects successfully, then I see this output:

Trying 10.22.71.11...
Connected to 10.22.71.11.
Escape character is '^]'.
BridgeCo AG Telnet server

I then input the following to change to a specific Favourite station:

FV 01

which works, changing the Favourite on the DN-700H. The output shows:

NSE2Now Playing
NSE2106 Jack FM Hertfordshire
NSE2106 Jack FM Hertfordshire
NSE8  000:01     100%

My question is... how can I script this process? I have succesfully made the connection using the script below, but am failing to actually issue commands to the unit after that. Here is the script I have created so far:

#!/bin/sh

telnet 10.22.71.11
sleep 2
send "FV 02"

Any tips on recreating what I have achieved by interacting in Terminal as a script would be greatly appreciated. Thanks

Try [expect](http://en.wikipedia.org/wiki/Expect). – Piotr Praszmo Jul 01 '14 at 16:16 — Piotr Praszmo, Jul 01 '14 at 16:16

score 2 · Answer 1 · edited May 23 '17 at 10:29

2

Duplicate of:

automating telnet session using bash scripts

Creating a script for a Telnet session?

My suggestion: if you just want to run commands without reading the resulting values, then pass an input file to telnet:

$ { echo FV 02; sleep 5; } | telnet 10.22.71.11

edited May 23 '17 at 10:29

Community

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answered Jul 01 '14 at 16:29

hdante

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is there any way that one can get the output from telnet screen? – th3pirat3 Feb 06 '18 at 23:58
@th3pirat3 you should use "expect" for that or write your own communication program. – hdante Feb 12 '18 at 17:28

Telnet Shell script

1 Answers1