[asterisk-users] Using SetVar with System() is it possible?

[Steve Edwards]

On Sat, 19 Jun 2010, bruce bruce wrote:

> Is it possible to harvest the output of system into a SetVar(variable)?
> 
> exten => s,n,SetVar(var=system(asterisk -rx "sip show channels" | grep 
> -c "(ulaw)")
> 
> ??? any problem with the syntax?

Really? Is posting questions showing you've made zero effort faster or 
easier than reading the help text or just trying it?

) Your parentheses don't match.

) You didn't read the documentation that says system() returns FAILURE or 
SUCCESS.

) You didn't notice that setvar() is deprecated.

) You didn't read the documentation that says set[var]() sets a name to a 
value -- no mention of evaluating an application.

Wouldn't it faster for you to just try it? You might learn why it didn't 
work?

The system() application is (IMO) a kludge. Sometimes it is the only way, 
but usually it is just the lazy way to solve a problem in an unreliable 
and inefficient way.

-- 
Thanks in advance,
-------------------------------------------------------------------------
Steve Edwards       sedwards at sedwards.com      Voice: +1-760-468-3867 PST
Newline                                              Fax: +1-760-731-3000