Dear Perl Monks,
I'm faced with an issue with Perl in which you can hopefully assist me. I have a Perl program that needs to run on both Sun Solaris and RedHat Enterprise Linux 6. One of the things it needs to do is sort a list. However, on Solaris and Linux the sort order is different when it comes to special characters. I tried using locale settings to avoid this issue, but to no avail. Below is an example script and the output on both Linux and Solaris.

#!/usr/bin/perl

$ENV{LANG}   = 'en_US';
$ENV{LC_ALL} = 'en_US.ISO8859-1';

use strict;
use warnings;
use locale;

my $i;
my @sortedList;
my @toSort = ('SortTest', 
              'TestSort',
              'Sort_Test',
              'Test_Sort',
              'Test1_Sort',
              'Sort1_Test',
              'Sort_1Test',
              'Test_1Sort');
@sortedList = sort (@toSort);

for ($i = 0; $i <= $#sortedList; $i++)
{
    print "$i:\t$sortedList[$i]\n";
}

[download]
Running this gives the output below: 
Linux                   Solaris
0:      Sort_1Test      0:      Sort_1Test
1:      Sort1_Test      1:      Sort_Test
2:      SortTest        2:      Sort1_Test
3:      Sort_Test       3:      SortTest
4:      Test_1Sort      4:      Test_1Sort
5:      Test1_Sort      5:      Test_Sort
6:      TestSort        6:      Test1_Sort
7:      Test_Sort       7:      TestSort

[download]

As can be seen, Linux prefers numbers over special characters, while on Solaris it's the other way round.

The question of course is, how can I make both Linux and Solaris behave equal?

Many thanks in advance.
Louis

In reply to Difference in sort order between Solaris and Linux by lpwevers

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