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Full Discussion: Telnet script to amplifier
Top Forums Shell Programming and Scripting Telnet script to amplifier Post 302901056 by drogert on Sunday 11th of May 2014 10:51:01 AM
Old 05-11-2014
Quote:
Originally Posted by Don Cragun
Assuming that PWR0 means the power is off and PWR1 means the power is on, and assuming that you want to mute if the power is on, I think you want something more like:
Code:
{
        sleep 2
        echo '?p'
        sleep 2
} | telnet 192.168.1.155 | (
        read power
        if [ "$power" = "PWR1" ]
        then {  sleep 2
                echo MZ
                sleep 2
        } | telnet  192.168.1.155
        fi
)

Obviously, this is untested (since I don't have an amp like this). If the amplifier has a command to terminate a command session, (something like exit or quit) you probably also want to add an echo to send that command to the amplifier in both of the above telnet scripts after the 2nd sleep.
Thanks! You are helping me allot!

When I add this code into the command line it gives me this:

Code:
{
>   sleep 2
>   echo mz
>   sleep 2
>   } | telnet 192.168.1.155
Trying 192.168.1.155...
Connected to 192.168.1.155.
Escape character is '^]'.
BridgeCo AG Telnet server
FL022020204D555445204F4646202020
MUT1
Connection closed by foreign host.

This is just fine because it mutes the amp. This also works inside a bash script, making it executable and running it from the commandline.

When I add your script into the commandline it doesn't give me any errors, but it doesnt do anything else. It just goes back to the commandline. Maybe the connection is closed by foreign host maybe the problem. I also tried with or without the "" and this wasn't the solution. What am I doing wrong?

thanks again!
Last edited by drogert; 05-11-2014 at 02:03 PM..
 

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LEARN ABOUT SUSE

tgt-setup-lun

tgt-setup-lun(8)					      System Manager's Manual						  tgt-setup-lun(8)

NAME

       tgt-setup-lun - creates a target, adds a device to the target and defines initiators that can connect to the target

SYNOPSIS

       tgt-setup-lun -d device -n target_name [initiator_IP1 initiator_IP2 ...] [-h]

DESCRIPTION

       Starts tgtd if necessary and creates a target according to the supplied target_name. The format of the target name is as follows:
       iqn.2001-04.com.<hostname>-<target_name> The target name must be unique.

       The  script then adds the requested device to the target. If specific IP addresses are defined, it adds them to the list of allowed initia-
       tors for that target. If no IP addresses is defined, it defines that the target accepts any initiator.

EXAMPLES

       Create a target that uses /dev/sdb1 and allows connections only from 192.168.10.81:
       tgt-setup-lun -d /dev/sdb1 -n my_target 192.168.10.81

       Create a target that uses /dev/sdb1 and allows connections only from 192.168.10.81 and 192.168.10.82:
       tgt-setup-lun -d /dev/sdb1 -n my_target 192.168.10.81 192.168.10.82

       Create a target that uses /dev/sdb1 and allows connections from any initiator:
       tgt-setup-lun -d /dev/sdb1 -n my_target

       Display help:
       tgt-setup-lun -h

AUTHOR

       Written by Erez Zilber

REPORTING BUGS

       Report bugs to <erezz@voltaire.com>.

COPYRIGHT

       Copyright (C) Voltaire Ltd. 2008.

																  tgt-setup-lun(8)
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