use File::Find::Rule;

my $finder = File::Find::Rule->file;
$finder->name( qr/\.master$/ );

my @abs_files = $finder->in('/home/myself');
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The interface can be a little funny, because the next example does the same..

use File::Find::Rule;

my @abs_files = File::Find::Rule->file->name( qr/\.master$/ )->in('/ho
+me/myself');
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Anyhow, this is pretty much the same as in the examples for File::Find::Rule