Re: What happened to 'env'?

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On Thu, 2020-10-08 at 11:17 -0700, Samuel Sieb wrote:
> On 10/8/20 3:00 AM, Patrick O'Callaghan wrote:
> > On Thu, 2020-10-08 at 08:14 +1100, Cameron Simpson wrote:
> > > On 07Oct2020 11:07, Patrick O'Callaghan <pocallaghan@xxxxxxxxx> wrote:
> > > > On Tue, 2020-10-06 at 15:45 -0700, ToddAndMargo via users wrote:
> > > > > I start all my Raku programs with
> > > > > 1: #!/usr/bin/env raku
> > > > 
> > > > Why? If you aren't adding options to 'env', surely this is the same as
> > > > using '/usr/bin/bash'.
> > > 
> > > No, this is a standard shebang (#!) hack to accomodate differering
> > > installation paths. The #! requires a fixed absolute path. So things
> > > which are often installed in different places (such as raku above) like
> > > /usr/local/bin or /opt/something and accessed via the user's $PATH
> > > setting, putting in this line makes the script more portable.
> > 
> > The user's export environment, including the PATH setting, is
> > automatically included, even if you have no shebang at all:
> > 
> > $ cat test
> > type python3
> > echo $PATH
> > $ chmod+x test
> > $ ./test
> > python3 is /usr/bin/python3
> > /usr/lib64/qt-3.3/bin:/usr/share/Modules/bin:/usr/local/bin:/usr/bin:/bin:/usr/local/sbin:/usr/sbin:/home/poc/.local/bin:/home/poc/bin
> I don't understand how your reply is related to the previous discussion. 
>   If you don't have a shebang, then the default is to run it with the shell.

I have it straight now. See my answer to Tom H.

poc
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