Start by writing your function from asterisk CLI .
When it works, convert it to be called from shell.
But you are not going to get a asterisk var contents like you are doing.

Linux shell does not know what ${RPT_ALINKS} is unless you carry/import  the var from asterisk.
Your echo will always be blank.



...mike/kb8jnm



----- Original Message -----
From:
"Users of Asterisk app_rpt" <app_rpt-users@lists.allstarlink.org>

To:
"Users of Asterisk app_rpt" <app_rpt-users@lists.allstarlink.org>
Cc:

Sent:
Wed, 5 Apr 2017 00:09:19 -0700
Subject:
Re: [App_rpt-users] event subsystem variable use in system call


Well, I was hoping that asterisk would have a way to expand asterisk variables before the shell gets called ( by the s| syntax ).  Apparently, asterisk is passing the command as is and the shell is expanding the variable.  


On Tue, Apr 4, 2017 at 8:54 PM, <mike@midnighteng.com> wrote:
I think your problem is that you are trying to execute from a linux command and the subsystem resides at the asterisk level.

Not that you can do it from there but you must address it where it resides.


...mike/kb8jnm



----- Original Message -----
From:
"Users of Asterisk app_rpt" <app_rpt-users@lists.allstarlink.org>

To:
<App_rpt-users@lists.allstarlink.org>
Cc:

Sent:
Tue, 4 Apr 2017 16:39:51 -0700
Subject:
[App_rpt-users] event subsystem variable use in system call


I am learning about the event subsystem.

One of my events looks like this:

echo bla ${RPT_ALINKS} >> /tmp/blabla =  s|T|RPT_NUMLINKS

This executes when I connect.  The contents of /tmp/blabla is simply bla.  I would have expected ${RPT_ALINKS} to have been expanded.  

Am I assuming functionality that doesn't exist?

Lowell


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