From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00 autolearn=unavailable autolearn_force=no version=3.4.4 Path: eternal-september.org!reader01.eternal-september.org!reader02.eternal-september.org!news.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: Simon Wright Newsgroups: comp.lang.ada Subject: Re: Accessing Shell Variables Date: Wed, 28 Dec 2016 20:51:20 +0000 Organization: A noiseless patient Spider Message-ID: References: <35dadef7-2aee-4cd9-b774-ab54f4698d64@googlegroups.com> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: mx02.eternal-september.org; posting-host="7330f773d0c8e9946dbd2eb00259fc77"; logging-data="29286"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX19I9HWhqX0SpE/ck3WF7wDF8lGDmrevsX4=" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.1 (darwin) Cancel-Lock: sha1:9Nvn6gUALEmX3eZLGQlciGOrd+8= sha1:PFDr/sx1me1BUb3nX053GSFtMIw= Xref: news.eternal-september.org comp.lang.ada:32970 Date: 2016-12-28T20:51:20+00:00 List-Id: Victor Porton writes: > ahlan.marriott@gmail.com wrote: > >> I can access Windows, Linux and Osx environment variables using >> Ada.Environment_Variables.Value However Linux and Osx also have Shell >> variables. How can I access these? > > You cannot access a shell variable unless it is exported. Exported shell > variable becomes and environment variable: > > xxx=yyy > ./my-program # my-program cannot (at least in an easy way) access $xxx > > export xxx=yyy > # or > xxx=yyy > export xxx > ./my-program # my-program cannot access xxx environment variable This variant is the one that *can* access the environment variable.