my version of Windows doesn't have tee installed

D:\Users\Rolf\pm>type call_less.pl
open STDOUT, '| tee -i null | more';;
print "hello world! $_\n" for 1.. 100;
close STDOUT;
exit;


D:\Users\Rolf\pm>call_less.pl
Der Befehl "tee" ist entweder falsch geschrieben oder
konnte nicht gefunden werden.

D:\Users\Rolf\pm>
[download]

Please note that the effect is best seen with small amounts of lines, hence 100.

> but then I wouldn't do it,

Neither would I, but I'm not the OP! :)

UPDATE

Using (and closing) a dedicated PIPE instead of STDOUT solves the issue for me on Win. see Re: Redirecting Output to shell command from within perl (Update "close PIPE")

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