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From: czech@sonic.net
To: zsh-users@zsh.org
Subject: Re: Best Way to Test an Environment Variable
Date: Wed, 14 Oct 2015 23:32:40 -0700	[thread overview]
Message-ID: <e9f31b7ad963ccccd870fc2428e9c96f.squirrel@legacy-webmail.sonic.net> (raw)
In-Reply-To: <e1edacefa7810f717d82c35449f30080.squirrel@legacy-webmail.sonic.net>

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
>



  reply	other threads:[~2015-10-15  6:32 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-10-14 14:50 ZSH feature request if not present jagmeet bali
2015-10-14 15:14 ` ZyX
2015-10-14 15:55   ` Peter Stephenson
2015-10-15  6:10 ` Best Way to Test an Environment Variable czech
2015-10-15  6:32   ` czech [this message]
2015-10-15  9:46     ` Roman Neuhauser
2015-10-15 17:34       ` Corwin

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