Date: Wed, 25 Jan 2012 20:34:25 -0800 From: Devin Teske <devin.teske@fisglobal.com> To: Chuck Swiger <cswiger@mac.com> Cc: freebsd-questions@freebsd.org Subject: Re: Portability of shell scripts from other *nixes Message-ID: <7BBD45DF-B332-4719-8D05-B472A6D680F6@fisglobal.com> In-Reply-To: <8E97D656-0FC1-4DD5-9F94-6707823F9F12@mac.com> References: <ac1be76b3dd10516e61861ae253b793f.squirrel@email.polands.org> <28F1F479-EA39-4841-AE54-76F0E512C02B@mac.com> <912B3883-ABA1-4EE7-857B-CA8A55C8B506@polands.org> <4F20C759.7060508@herveybayaustralia.com.au> <8E97D656-0FC1-4DD5-9F94-6707823F9F12@mac.com>
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On Jan 25, 2012, at 8:13 PM, Chuck Swiger wrote:
> Hi--
>=20
> On Jan 25, 2012, at 7:24 PM, Da Rock wrote:
>> On 01/26/12 12:55, Doug Poland wrote:
>>> This gets me closer, but the scripts behave differently now on OS X. F=
or example, printf's don't output the same.
>>=20
>> Try searching on google and find out exactly what sh MacOSX is using. Th=
en you'd have a better idea on what you're working with.
>=20
> /bin/sh on MacOSX is:
>=20
> $ /bin/sh --version
> GNU bash, version 3.2.48(1)-release (x86_64-apple-darwin10.0)
> Copyright (C) 2007 Free Software Foundation, Inc.
>=20
> ...and it has been using bash as /bin/sh since 10.2 or so.
>=20
> Anyway, running bash as /bin/sh versus as /bin/bash likely affects whethe=
r it invokes printf as a builtin(1) command or as an external command. It'=
s possible that invoking /usr/bin/printf instead of just printf in the scri=
pts might resolve the issue(s).
>=20
If that's the problem, perhaps a "trick" can do:
printf(){builtin printf "$@";}
At the top after the she-bang. Should cause all invocations to use built-in=
versus otherwise by defining a function that explicitly calls the built-in.
--=20
Devin
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