[asterisk-users] How to access environment variable?

[James Fromm]

How do you start Asterisk?  You need to make sure the environment 
variable you want inside Asterisk is being exported.  I use 'export 
HOSTNAME' in my asterisk init script and it works like a charm.

Larry Alkoff wrote:
> Thanks for your reply Ioan.
> 
> Very interesting.  ${ENV(PATH)} works to display the path
> but ${ENV(MYIP)} does not!
> 
> There must be a list in Asterisk that only allows cerain environmental 
> variables to be shown.  A very unnecessary bummer.
> 
> However, at the CLI prompt:
> ! echo $PATH and  ! echo $MYIP
> both work fine.
> 
> Larry
> 
> 
> Ioan Indreias wrote:
>> Hello Larry,
>>
>> Probably your variable (MYIP) is not accessible to asterisk process 
>> environment.
>> Test it with ${ENV(PATH)} and you will have a result there....
>>
>> exten => s,n,Set(test=${ENV(PATH)})
>> -- Executing Set("IAX2/test_iax", 
>> "test=/sbin:/usr/sbin:/bin:/usr/bin:/usr/X11R6/bin") in new stack
>>
> 
> 
> Larry Alkoff wrote:
>  > How can I access an environmental variable in Asterisk 1.2.5?
>  >
>  > It should be possible according to:
>  > http://www.voip-info.org/wiki/view/Asterisk+variables
>  > which says:
>  >
>  > Environment Variables
>  > You may access unix environment variables using the syntax:
>  >    ${ENV(foo)}
>  > ${ENV(ASTERISK_PROMPT)}: the current Asterisk CLI prompt.
>  > ${ENV(RECORDED_FILE)}: the filename of the last file saved by the 
> Record command
>  >
>  >
>  > I have an environmental variable MYIP which contains my current IP 
> address but when I execute exten _4XX the following line only says
>  > 'myip is  ' and the rest is blank instead of showing
>  > 'myip is   www.xxx.yyy.zzz'
>  >
>  > exten => _4XX,n,VERBOSE("myip is  ${ENV(MYIP)}")
>  >
>  > Why doesn't it work?
>  >
>  > Larry
>