Hello rinkish85,

I think the following does what you want:

use strict;
use warnings;
use feature 'say';

my @files =
(
    'log4perl.Advanced1999:06:56:12.General_Information.ErrorLog',
    'log4perl.Advanced1999:06:56:12CSS.General_Information-collector-2
+.ErrorLog',
    'log4perl.Advanced1999:06:56:12CSS.General_Information-collector-2
+.INVALID',
);

for (@files)
{
    if (/ ^ [\w_-]+ \. [\w:]+ \. [\w_-]+ \. ErrorLog $ /x)
    {
        s/ ^ ([\w_-]+) \. ([\w:]+) CSS \. /$1.$2./x;
        say;
    }
}

[download]

Output:

13:43 >perl 1783_SoPW.pl
log4perl.Advanced1999:06:56:12.General_Information.ErrorLog
log4perl.Advanced1999:06:56:12.General_Information-collector-2.ErrorLo
+g

13:43 >

[download]

See perlrecharclass.

Hope that helps,

Athanasius <°(((>< contra mundum Iustus alius egestas vitae, eros Piratica,

In reply to Re: Perl file name parsing - Regular expression by Athanasius
in thread Perl file name parsing - Regular expression by rinkish85

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