Well, this may not get you only a subset of lower-case letters, but it
does at least limit to lower case: [[:lower:]]. More details below.

e.g.:

ls [[:lower:]]*

Regards,
Chris

See also:
http://www.tldp.org/LDP/GNU-Linux-Tools-Summar/html/x11655.htm#STANDARD-WILDCARDS


man 7 glob
----------

Character classes and internationalization
       Of  course ranges were originally meant to be ASCII ranges, so
that "[ -%]" stands for "[ !"#$%]" and "[a-z]" stands
       for "any lowercase letter".  Some UNIX implementations
generalized this so that a range X-Y stands for  the  set  of
       characters  with code between the codes for X and for Y.
However, this requires the user to know the character cod‐
       ing in use on the local system, and moreover, is not convenient
if the collating sequence  for  the  local  alphabet
       differs  from the ordering of the character codes.  Therefore,
POSIX extended the bracket notation greatly, both for
       wildcard patterns and for regular expressions.  In the above we
saw three types of items that can occur in a bracket
       expression:  namely  (i) the negation, (ii) explicit single
characters, and (iii) ranges.  POSIX specifies ranges in
       an internationally more useful way and adds three more types:

       (iii) Ranges X-Y comprise all characters that fall between X and
Y (inclusive) in the current collating sequence  as
       defined by the LC_COLLATE category in the current locale.

       (iv) Named character classes, like

       [:alnum:]  [:alpha:]  [:blank:]  [:cntrl:]
       [:digit:]  [:graph:]  [:lower:]  [:print:]
       [:punct:]  [:space:]  [:upper:]  [:xdigit:]

       so  that  one  can say "[[:lower:]]" instead of "[a-z]", and have
things work in Denmark, too, where there are three
       letters past 'z' in the alphabet.  These character classes are
defined by  the  LC_CTYPE  category  in  the  current
       locale.

On 06/19/2015 09:58 AM, Theodore Ruegsegger wrote:
> It looks like a locale issue. In the old "C" locale, sorting a list
> put all cap letters before all lowercase letters. In the "en_US.UTF-8"
> locale, apparently the Ubuntu default, they're sorted as in a regular
> dictionary, regardless of caps.
>
> For example:
>
> ls
> apple  berry  Berry  charlie
>
> Hope that's more helpful than my first response!
> Ted
>
> On Fri, Jun 19, 2015 at 9:46 AM, Theodore Ruegsegger <gruntly@gmail.com> wrote:
>> Disregard last transmission. I shoulda read your post more carefully.
>>
>> Ted
>>
>> On Fri, Jun 19, 2015 at 9:44 AM, Theodore Ruegsegger <gruntly@gmail.com> wrote:
>>> b != B
>>>
>>> HTH,
>>> Ted
>>>
>>> On Fri, Jun 19, 2015 at 9:29 AM, Brett Russ <bruss@alum.wpi.edu> wrote:
>>>> Can someone explain this to my evidently inadequately caffeinated brain? I
>>>> was trying to use a lower case character range wildcard to list all files
>>>> not starting with an uppercase letter and I noticed it wasn't working as I'd
>>>> expect. So I created this simple example and still don't understand what's
>>>> happening.
>>>>
>>>> Dir with two files:
>>>>
>>>> brett@spider /tmp/test $ \ls
>>>> apple  Berry
>>>>
>>>> This is what I'd expect to see:
>>>>
>>>> brett@spider /tmp/test $ \ls [a-b]*
>>>> apple
>>>>
>>>> This makes no sense. Is this a bug?:
>>>>
>>>> brett@spider /tmp/test $ \ls [a-c]*
>>>> apple  Berry
>>>>
>>>> From here on are just a few extra examples confirming the oddity of the
>>>> above.
>>>>
>>>> brett@spider /tmp/test $ \ls [a]*
>>>> apple
>>>>
>>>> brett@spider /tmp/test $ \ls [b]*
>>>> ls: cannot access [b]*: No such file or directory
>>>>
>>>> brett@spider /tmp/test $ \ls [c]*
>>>> ls: cannot access [c]*: No such file or directory
>>>>
>>>> brett@spider /tmp/test $ \ls a*
>>>> apple
>>>>
>>>> brett@spider /tmp/test $ \ls b*
>>>> ls: cannot access b*: No such file or directory
>>>>
>>>> brett@spider /tmp/test $ \ls c*
>>>> ls: cannot access c*: No such file or directory
>>>>
>>>> brett@spider /tmp/test $ dpkg -S `which ls`
>>>> coreutils: /bin/ls
>>>>
>>>> brett@spider /tmp/test $ dpkg -s coreutils
>>>> Package: coreutils
>>>> Essential: yes
>>>> Status: install ok installed
>>>> Priority: required
>>>> Section: utils
>>>> Installed-Size: 6020
>>>> Maintainer: Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com>
>>>> Architecture: amd64
>>>> Multi-Arch: foreign
>>>> Version: 8.21-1ubuntu5.1
>>>> [SNIP]
>>>>
>>>>
>>>> Thanks,
>>>> Brett
>>>>
>>>> _______________________________________________
>>>> Wlug mailing list
>>>> Wlug@mail.wlug.org
>>>> http://mail.wlug.org/mailman/listinfo/wlug
>>>>
> _______________________________________________
> Wlug mailing list
> Wlug@mail.wlug.org
> http://mail.wlug.org/mailman/listinfo/wlug
>

_______________________________________________
Wlug mailing list
Wlug@mail.wlug.org
http://mail.wlug.org/mailman/listinfo/wlug