That's not how you one-liner, playa. When I drop the line #!/usr/bin/perl use strict; use warnings; print "Hello, World...\n"; directly in the commandline I get nothing also because # is a comment and there's no shebang evaluation in the interactive prompt. Throw that mess in a file:

#!/usr/bin/perl
use strict;
use warnings;
print "Hello, World...\n";
[download]

Set it executable, chmod 700 hello.pl, then run it with ./hello.pl.

If that's not it I have no idea what you're doing because any other interpretation of your post would throw an error from something. Putting it in a file will at least give you a feedback if that's not where your perl is located.