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plx is a windows throwback, because windows doesn't use shebang but assoc (C:\> help assoc), and before perl5, there were no modules, so libraries were just .pl files, and perl5 includes some (now unsupported) compatibility libraries 

$ perl -e " require 'ctime.pl'; print ctime()"
Wed Dec 31 16:00:00 PST 1969

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so activestate (who ported perl to win32, then microsoft sponsored them) wanted to distinguish these libraries (non-executable) from programs (executable), so that if you typed pwd.pl (or clicked on pwd.pl), it opened pwd.pl in notepad (or whatever), but if you typed superfly.plx (or clicked it), it executed perl superfly.plx

I also think there was a superfly.plw which executed wperl superfly.plw (wperl is GUI version, non-console)

I don't know if this still survives in activeperl, but I don't think strawberryperl uses it .... you can manage this yourself see C:\> help ftype, it actually shows perl as the example

In reply to Re: new perl user by Anonymous Monk
in thread new perl user by aadem

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