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#!/usr/bin/perl
# one_liner - produce a perl one-liner out of perl code
...
my $in = join "", <>;
$in =~ s/\n/ /g;
print "perl -e ", qquote($in, ':shell'), "\n";

$ one_liner
print "hello\n";
...
^D

perl -e "print \"hello\\n\"; print \"world\\n\"; "