[ale] BASHing my head

[Ed Cashin]

I've been biting my tongue here.  I don't think these characteristics of
bash are congruent with UNIX philosophy.  The people who made UNIX complain
about bash being bloated.  These characteristics of bash are congruent with
POSIX philosophy.

A UNIX-ish way of doing this would be ...

  ls | grep '^[A-Z].*\.pdf'


On Wed, Aug 26, 2015 at 1:41 PM, Jim Kinney <jim.kinney at gmail.com> wrote:

> Wow! Shopt has enough options to make it stand next to emacs.
>
> I don't understand why the default is essentially case insensitive when
> everything else in bash is case sensitive. It looks like the LANG makes it
> work that way but that makes no sense either to me. A != a in standard US
> English.
>
> More of the secret mysteries of Unix philosophy I've never wrapped my head
> around.
> On Aug 26, 2015 12:16 PM, "Scott Plante" <splante at insightsys.com> wrote:
>
>>
>> I didn't know the globasciiranges option.
>>
>> Another solution is the LC_COLLATE variable:
>>
>> splante:/tmp/x/> ls
>> a.pdf A.pdf b.pdf B.pdf
>> splante:/tmp/x/> ls [A-Z].pdf
>> A.pdf b.pdf B.pdf
>> splante:/tmp/x/> LC_COLLATE=C
>> splante:/tmp/x/> ls [A-Z].pdf
>> A.pdf B.pdf
>> splante:/tmp/x/> LC_COLLATE=en_US
>> splante:/tmp/x/> ls [A-Z].pdf
>> A.pdf b.pdf B.pdf
>>
>> This is probably a better solution:
>>
>> splante:/tmp/x/> ls [[:upper:]].pdf
>> A.pdf B.pdf
>>
>>
>> Scott
>>
>>
>> ----- Original Message -----
>>
>> From: "Alex Carver" <agcarver+ale at acarver.net>
>> To: ale at ale.org
>> Sent: Wednesday, August 26, 2015 11:34:02 AM
>> Subject: Re: [ale] BASHing my head
>>
>> You need to set the shopt globasciiranges otherwise it uses the values
>> as lexical rather than pure ASCII values.
>>
>>
>> On 2015-08-26 08:22, Scott M. Jones wrote:
>> > For some reason my wildcard search in bash starting with uppercase
>> > letters is finding files starting with lower case. I checked my 'shopt'
>> > options and they should be correct, but changing them doesn't change the
>> > results. In this case I DO want a case sensitive search but I'm not
>> > getting that. What am I doing wrong? (Fedora 21 bash BTW.)
>> >
>> > [scott at vbox21 tentcards]$ echo $SHELL
>> > /bin/bash
>> > [scott at vbox21 tentcards]$ ls [A-Z]*.pdf
>> > no_materials.pdf tentcard.pdf tentcard_short.pdf tents.pdf
>> > tents_short.pdf
>> > [scott at vbox21 tentcards]$ shopt | grep -i case
>> > nocaseglob off
>> > nocasematch off
>> > [scott at vbox21 tentcards]$ shopt -s nocaseglob
>> > [scott at vbox21 tentcards]$ shopt -s nocasematch
>> > [scott at vbox21 tentcards]$ ls [A-Z]*.pdf
>> > no_materials.pdf tentcard.pdf tentcard_short.pdf tents.pdf
>> > tents_short.pdf
>> > [scott at vbox21 tentcards]$ shopt | grep -i case
>> > nocaseglob on
>> > nocasematch on
>> > [scott at vbox21 tentcards]$
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-- 
  Ed Cashin <ecashin at noserose.net>
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