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    $log->info("Data directory: %s", $options->{'dir'});
    
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    my $spr = sub { my $fmt = shift;  return sprintf $fmt, @_; };
    
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    my $conf = qq!
        log4perl.rootLogger        = TRACE, DBAppndr
    ...
    
    !;
        Log::Log4perl::init( \$conf );