Windows shell would be 

for %q in (*.txt) do perl -pe"$_.=$/" "%q" > "%q.new"

[download]

And a golfed version would be 

perl -nEsay        # 5.10

perl -pe$_.=$/     # <5.10 Windows

perl -pe'$_.=$/'   # <5.10 bash

[download]

In reply to Re^4: IO::Handles ... any good? by ikegami
in thread IO::Handles ... any good? by blowupp

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