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Re: Best Way to Test an Environment Variable

X-seq: zsh-users 20758
From: czech@xxxxxxxxx
To: zsh-users@xxxxxxx
Subject: Re: Best Way to Test an Environment Variable
Date: Wed, 14 Oct 2015 23:32:40 -0700
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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).

Thanks,



Corwin

> Hi -
>
> I've been using:
>
> if [ -z $ENV_VAR ]; then
>
>     <do stuff>
> fi
>
> To test environment variables. It seems to work.
>
> But I'm curious - is there a better way in zsh to test an environment
> variable?
>
> Thanks,
>
>
>
> Corwin
>

Follow-Ups:
- Re: Best Way to Test an Environment Variable
  - From: Roman Neuhauser

References:
- ZSH feature request if not present
  - From: jagmeet bali
- Best Way to Test an Environment Variable
  - From: czech

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