I've just found this code in a comment on a blog.
#!/bin/perl -sp0777i<X+d*lMLa^*lN%0]dsXx++lMlN/dsM0<j]dsj
$/=unpack('H*',$_);$_=`echo 16dio\U$k"SK$/SM$n\EsN0p[lN*1
lK[d2%Sa2/d0$^Ixp"|dc`;s/\W//g;$_=pack('H*',/((..)*)$/)
I realise it's probably a bad idea to paste this into the terminal, but can someone untangle this and tell me what it's meant to do? I'm not even sure it's valid code :)