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From: Chet Ramey <chet.ramey@case.edu>
Newsgroups: gnu.bash.bug
Subject: Re: [PATCH] Fix \H: Use getaddrinfo to get full hostname
Date: Wed, 24 Jul 2019 14:45:18 -0400
Lines: 86
Approved: bug-bash@gnu.org
Message-ID: <mailman.2167.1563993932.2688.bug-bash@gnu.org>
References: <20190724135835.110473-1-whissi@gentoo.org> <454afb04-c18a-1b82-d869-34539c194b3d@case.edu> <f1f2e8df-5921-b696-686b-de5aec362a25@gentoo.org> <20190724144629.GL1218@eeg.ccf.org> <571d32dc-3ad0-3c00-5d9b-82ace9c041ff@gentoo.org> <912bd73d-ea80-dacd-ade3-7258d6d4ff03@case.edu>
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Cc: chet.ramey@case.edu
To: Thomas Deutschmann <whissi@gentoo.org>, bug-bash@gnu.org
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From: Chet Ramey <chet.ramey@case.edu>
Reply-To: chet.ramey@case.edu
To: Thomas Deutschmann <whissi@gentoo.org>, bug-bash@gnu.org
Cc: chet.ramey@case.edu
Message-ID: <912bd73d-ea80-dacd-ade3-7258d6d4ff03@case.edu>
Subject: Re: [PATCH] Fix \H: Use getaddrinfo to get full hostname
References: <20190724135835.110473-1-whissi@gentoo.org>
 <454afb04-c18a-1b82-d869-34539c194b3d@case.edu>
 <f1f2e8df-5921-b696-686b-de5aec362a25@gentoo.org>
 <20190724144629.GL1218@eeg.ccf.org>
 <571d32dc-3ad0-3c00-5d9b-82ace9c041ff@gentoo.org>
In-Reply-To: <571d32dc-3ad0-3c00-5d9b-82ace9c041ff@gentoo.org>

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On 7/24/19 11:23 AM, Thomas Deutschmann wrote:
> On 2019-07-24 16:46, Greg Wooledge wrote:
>>> I hope you are not talking about putting FQDN into a file which is
>>> expecting hostname only...
>>
>> Yes, many people do precisely that.  They configure their systems
>> so the "hostname" command returns an FQDN, as I showed above.  (Not
>> my design, not my choice.)
>=20
> I consider this as misconfiguration. :(

This is how Mac OS X works in an enterprise environment (this one, at
least).

> I can't believe that we somehow encourage people to either do something=

> wrong (put FQDN where just non-FQDN is expected and bypass DNS
> mechanism) or use $(hostname -f) in PS1 when they want FQDN.

Users don't "put" the FQDN anywhere. I didn't do anything when setting
up this system. This is my official hostname as set by enterprise DNS.


> Anyway, back to bash:
>=20
> So you are rejecting this patch, right? Maybe update man page at least
> to clarify that "\H" in contrast to "\h" is supposed to return the same=

> value but _unfiltered_?

What does `unfiltered' mean that's different from what the man page says?=

I don't see the difference.

I think the current implementation is fine, but you can easily use a shel=
l
variable and expand it in $PS1 if you want something other than what
gethostname() gives you.

Chet
--=20
``The lyf so short, the craft so long to lerne.'' - Chaucer
		 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU    chet@case.edu    http://tiswww.cwru.edu/~chet/=



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