Hi, You are correct :-)
I ran the perl with the B::Deparse module
Perl parses the line

truncate $fh,0 || die "could not truncate $dcs_log_file: $!";
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to

 truncate $fh, die("could not truncate ${log_file}: $!");
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Now i also understand the difference between || and or :-)

In || it makes 0|| before truncate.
with or it would make the truncate before

Thanks,
David