From: Stephen John Smoogen <smooge@gmail.com>
To: moss@cs.umass.edu, cygwin@cygwin.com
Subject: Re: alias appears to not work inside a called bash script
Date: Tue, 22 Aug 2017 15:19:00 -0000 [thread overview]
Message-ID: <CANnLRdgBU-Gact9rTN3cSYVy6UMe83r=EYyVsvwS97k8VuxD6g@mail.gmail.com> (raw)
In-Reply-To: <0ac245f1-002b-2993-c1de-e4ddaafa9c7d@cs.umass.edu>
On 22 August 2017 at 10:47, Eliot Moss <moss@cs.umass.edu> wrote:
> On 8/22/2017 10:31 AM, Stephen John Smoogen wrote:
>
>> I replicated this problem on my system and found that the fix is to add a
>>
>> shopt -s expand_aliases
>>
>> at the top of the script. I don't know why the option is turned off
>> when running scripts versus in a plain script but that seems to be a
>> default in Cygwin.
>
>
> It's a *bash* default - it has nothing to do with Cygwin as distinct
> from other bash installations. If you had a different experience
> elsewhere, it could be that the default was overridden in some system
> wide bashrc file - but that strikes me as unlikely. I suspect that
> this is done as a security measure, to prevent an alias from introducing
> a surprise.
>
I checked on CentOS and there is no shopt option set in any of the
/etc/ files. It must be a compiled in default of some sort as EL6 and
EL7 both work without an explicit `shopt -s expand_aliases`. I then
tried on an Ubuntu 16.04 system and it works without the `shopt -s
expand_aliases` also.
I didn't have access to anything else at the moment so I can't say
which other systems might actually follow the default other than
Cygwin at the moment.
> Regards - EM
>
>
> --
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--
Stephen J Smoogen.
--
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next prev parent reply other threads:[~2017-08-22 15:19 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-21 22:30 Michel LaBarre
2017-08-21 22:53 ` Eliot Moss
2017-08-21 22:55 ` alias appears to not work inside a called bash scripty Duncan Roe
2017-08-22 1:01 ` Michel LaBarre
2017-08-22 14:31 ` alias appears to not work inside a called bash script Stephen John Smoogen
2017-08-22 14:47 ` Eliot Moss
2017-08-22 15:19 ` Stephen John Smoogen [this message]
2017-08-22 16:46 ` Eliot Moss
2017-08-22 18:25 ` Stephen John Smoogen
2017-08-25 0:37 ` Either trim quoted text or STOP BOTTOM POSTING (was: alias appears to not work...) L A Walsh
2017-08-25 14:25 ` Either trim quoted text or STOP BOTTOM POSTING cyg Simple
2017-08-25 16:43 ` Dan Kegel
2017-08-26 6:04 ` convenient trimming of quoted text to make points L A Walsh
2017-08-26 15:26 ` cyg Simple
2017-09-01 4:54 ` Duncan Roe
2017-09-01 7:37 ` Csaba Raduly
2017-09-01 12:38 ` cyg Simple
2017-08-22 17:08 ` alias appears to not work inside a called bash script cyg Simple
2017-08-22 17:14 ` Eliot Moss
2017-08-22 19:07 ` cyg Simple
2017-08-22 19:11 ` cyg Simple
2017-08-23 19:08 ` Eric Blake
2017-08-22 19:47 Kaz Kylheku
2017-08-25 2:23 ` L A Walsh
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