Re: Best Way to Test an Environment Variable

[Corwin <czech@sonic.net>]

Hi Roman -

Thanks for the pointer to zshexpn. I will refrain from replying to a 
different topic with a new topic.

Regards,



Corwin

On 2015-10-15 02:46, Roman Neuhauser wrote:
> # czech@sonic.net / 2015-10-14 23:32:40 -0700:
>> I probably should have clarified - the objective of the test is to see 
>> if
>> the environment variable is set or not. -z $ENV_VAR seems to return 1 
>> if
>> the environment variable is not set or is set to null (zero bytes).
> 
> zshexpn(1):
> 
>   ${+name}
>       If name is the name of a set parameter `1' is substituted,
>       otherwise `0' is substituted.
> 
> ps your first email is a reply to an email with a completely unrelated
> topic.  don't do that.
> 
>   891     Oct 14 jagmeet bali    (  49) ZSH feature request if not 
> present
>   892     Oct 14 ZyX             (  53) |->
>   893     Oct 14 Peter Stephenso ( 120) | `->
>   894     Oct 14 czech@sonic.net (  60) `->Best Way to Test an
> Environment Variable
>   895     Oct 14 czech@sonic.net (  73)   `->