Hello fritz1968, I personally prefer to use config files for configuration purposes, so I have a file pllog.conf:

log4perl.rootLogger = TRACE, FileApp, XMLAppender, ScreenApp
log4perl.appender.FileApp = Log::Log4perl::Appender::File
log4perl.appender.FileApp.filename = sub { my $Me=$0; $Me =~ s/^.*\\//
+; $Me =~ s/\..*//; return "$Me.log" }
log4perl.appender.FileApp.layout = PatternLayout
log4perl.appender.FileApp.layout.ConversionPattern   = %d{ISO8601} (%-
+13F: %04L) %m%n
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And somewhere in perl code:

    use Log::Log4perl qw(get_logger);
    Log::Log4perl->init("pllog.conf");
    my $logger = get_logger("My_Tools.$Me");
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Used in this way, you get a logfile with the same name as your perl file but with .log instead of .pl. I only showed the file appender path, as you requsted. You can change this approach easily to fit your needs. And you can change the whole log4perl thing without changing your code.