Use env in shbang

diff --git a/moose-class/exercises/test-all-answers b/moose-class/exercises/test-all-answers
index 0ea0b6f..397cda0 100755 (executable)
--- a/moose-class/exercises/test-all-answers
+++ b/moose-class/exercises/test-all-answers
@@ -1,4 +1,4 @@
-#!/usr/bin/perl
+#!/usr/bin/env perl
 
 use strict;
 use warnings;