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Re: [PATCH] Fix \H: Use getaddrinfo to get full hostname


From: Chet Ramey
Subject: Re: [PATCH] Fix \H: Use getaddrinfo to get full hostname
Date: Wed, 24 Jul 2019 14:45:18 -0400
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:60.0) Gecko/20100101 Thunderbird/60.8.0

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.)
> 
> 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:
> 
> 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 shell
variable and expand it in $PS1 if you want something other than what
gethostname() gives you.

Chet
-- 
``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU    address@hidden    http://tiswww.cwru.edu/~chet/

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