Not that B::Deparse is a bad thing to know, but surely recommending perlrun is more appropriate here :-)

jesuashok: the 42 here is indeed essentially a noop, but Perl requires something to use as a program source. If you hadn't supplied -e, in the absence of a filename it would try to read the program from standard input; that would appear to make perl hang until you hit EOF (^D or ^Z according to platform) in the terminal window.

-p, as the anonymous commenter indicated, surrounds a -e-oneliner with a read and print loop. The -e is still required.

In reply to Re^2: expression which does nothing by gaal
in thread expression which does nothing by jesuashok

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