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From: =?UTF-8?Q?Morten_Kj=C3=A6rulff?= <mortenkjarulff AT gmail DOT com>
Date: Mon, 22 Aug 2016 16:36:13 +0200
Message-ID: <CA+7cx1p8ntAQriaYPJyBLcEu7sHPixs3sYUydx8XMZqQ20mL1g@mail.gmail.com>
Subject: Re: #!/bin/sh and #!/bin/bash is not the same
To: cygwin AT cygwin DOT com
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Thanks.

What I was actually trying, was this:

echo a | while read ; do
  some_command &
done
wait

The "wait" did not wait. I guessed the reason was that "some_command
&" was executed in a subshell.

So I tried:

while read ; do
  some_command &
done < <(echo a)
wait

It was working, however not with #!/bin/sh

/Morten



On Mon, Aug 22, 2016 at 3:16 PM, cyg Simple <cygsimple AT gmail DOT com> wrote:
> On 8/20/2016 1:42 PM, Morten Kjærulff wrote:
>> Hi,
>>
>> I thought that #!/bin/sh in a script would be a bash, but it seems not
>> to be - or what am I doing wrong?
>>
>
> If you want to ensure that you have a particular flavor of shell then
> don't use /bin/sh.  The reason to use /bin/sh is that POSIX ensures it
> exists but it doesn't have to be bash, even on Linux.  For a generic
> shell script use ksh syntax, you'll find that it gets you further and is
> supported by bash.
>
> --
> cyg Simple
>
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