in reply to Batch to Perl translation (just 1 line, not the whole script)

On the face of it, a simple:

print <<'stuff';
BAYES;
bayesClass=nameOfClassVariable;
END
stuff

[download]

Or even just:print "BAYES;\nbayesClass=nameOfClassVariable;\nEND\n"; ought to send the same text to STDOUT.

The missing information is what is in %1 in the .bat script?

With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.

The start of some sanity?

In Section Seekers of Perl Wisdom