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Different behavior of LC_COLLATE in AIX & LINUX

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Operating Systems AIX Different behavior of LC_COLLATE in AIX & LINUX
# 1  
Old 02-03-2010
Different behavior of LC_COLLATE in AIX & LINUX
1. I have created following files in both AIX & Linux
touch a A b B c C x X y Y z Z

2. In AIX

$ LC_COLLATE=en_US ; export LC_COLLATE
$echo [a-z]
$ a b c x y z


3. In LINUX
$ LC_COLLATE=en_US ; export LC_COLLATE
$ echo [a-z]
$ a A b B c C x X y Y z

Could anyone please explain the difference in behavior...
Thanks for your help
# 2  
Old 02-03-2010
Different behavior of LC_COLLATE in AIX & LINUX
In linux ,it is character case insensitive...so when u echoed it displays all alphabets....
# 3  
Old 02-03-2010
OSX (BSD Darwin) Example
FYI, on Darwin BSD (Apple OSX)

Code:
apple:$ touch a A b B c C x X y Y z Z
apple:$ LC_COLLATE=en_US ; export LC_COLLATE
apple:$ echo [a-z]
a b c x y z
apple:$

# 4  
Old 02-03-2010
On Linux, using bash
Code:
> touch a A b B c C x X y Y z Z
> LC_COLLATE=en_US; export LC_COLLATE
> echo [a-z]
a A b B c C x X y Y z
>

On Linux, using ksh93:
Code:
$ touch a A b B c C x X y Y z Z
$ LC_COLLATE=en_US; export LC_COLLATE
$ echo [a-z]
a b c x y z
$

Seems to be more of an shell than OS issue.
# 5  
Old 02-03-2010
Alternative could be...
On Linux
Code:
 
$ ls
a  A  b  B  c  C  x  X  y  Y  z  Z
 
$ LC_COLLATE=en_US ; export LC_COLLATE
 
$ echo [[:lower:]]
a b c x y z
 
$ echo [[:upper:]]
A B C X Y Z
 
$ echo [A-Z]
A b B c C x X y Y z Z
 
$ echo [a-z]
a A b B c C x X y Y z

# 6  
Old 02-03-2010
Thank you all for the explanations.....
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