[andor]

It's Perl. The last `$_`; evals what's in $_, so change it to just print the variable:

  $_='^#(/||/@!@[{@:^[-['^";@@@\\>])@.".
  "{)/];)^{";$,+=(++$,);$_.=">&$,";
  print "$_";

The output is:

  echo Brian Rogers >&2