So let's say you are on a *nix machine and you need an application that echos what you type. And let's further say that you want to use perl, python, ruby and shell to do it. I bring you convoluted echo. A perl script the writes and executes a python script that's and executes a ruby script which writes and executes a shell script to echo your command line arguments.

Happy Memorial Day

#!/usr/bin/perl
my $echo = q{};

open my $py, '>', 'ce.py' or die "Cannot open ce.py: $!\n";
    $py->print("#!/usr/bin/python\n\n");

    $py->print("import os\n\n");

    $py->print("fo = open(\"ce.rb\",\"w\")\n\n");

    $py->print("fo.write(\"#!/usr/bin/ruby\\n\")\n");
    $py->print("fo.write(\"out_file = File.new(\\\"ce.sh\\\", \\\"w\\\
+")\\n\")\n");
    $py->print(q{fo.write("out_file.puts(\"#!/bin/sh\\n\\necho $*\\n\\
+")\n")});
    $py->print("\n");
    $py->print(q{fo.write("out_file.close\n\n")});
    $py->print("\n");
    $py->print("\n");


foreach my $a (@ARGV) {
    $echo .= " ".$a;
    # $py->print( " $a ");
}
    $py->print(q{fo.write("system(\"/bin/sh ce.sh });
    $py->print(" $echo  ");
    $py->print(q{\")\n")});

    $py->print("\nfo.close()\n");

    $py->print("os.system(\"/usr/bin/ruby ce.rb\")\n");

close $py;

system("/usr/bin/python ce.py");
[download]

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