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References: <20200512234213.63651-1-emilyshaffer@google.com>
 <20200512234213.63651-2-emilyshaffer@google.com> <20200512235924.GC6605@camp.crustytoothpaste.net>
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From:   Eric Sunshine <sunshine@sunshineco.com>
Date:   Wed, 13 May 2020 01:10:36 -0400
Message-ID: <CAPig+cRGrExRsucs8pmmiP+Zc2CmR3AU=8ACuiyH9tkz9JSCgQ@mail.gmail.com>
Subject: Re: [PATCH 1/2] help: add shell-path to --build-options
To:     Junio C Hamano <gitster@pobox.com>
Cc:     "brian m. carlson" <sandals@crustytoothpaste.net>,
        Emily Shaffer <emilyshaffer@google.com>,
        Git List <git@vger.kernel.org>
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On Wed, May 13, 2020 at 1:02 AM Junio C Hamano <gitster@pobox.com> wrote:
> "brian m. carlson" <sandals@crustytoothpaste.net> writes:
> > [...] A value of "/bin/sh" doesn't
> > necessarily tell us very much on Debian (or on macOS, for that matter).
>
> Good point.  Perhaps readlink(3) on it, then?
>
> lrwxrwxrwx 1 root root 9 Mar 11  2018 /bin/sh -> /bin/bash

That wouldn't help on Mac OS:

    $ ls -l /bin/sh /bin/bash
    -r-xr-xr-x  1 root  wheel  618448 Mar 18 22:04 /bin/bash
    -r-xr-xr-x  1 root  wheel  618512 Mar 18 22:04 /bin/sh

Although /bin/sh is neither a hard link nor a symbolic link to
/bin/bash, nor is the file size the same, it is nevertheless Bash (in
some form or another).