I think backticks are better when you need to capture the output of the process. If you're throwing away that value, maybe system will be more appropiate.

Updated:

From perldoc -f system:

               You can check all the failure possibilities by inspecti
+ng $?
               like this:

                   if ($? == -1) {
                       print "failed to execute: $!\n";
                   }
                   elsif ($? & 127) {
                       printf "child died with signal %d, %s coredump\
+n",
                           ($? & 127),  ($? & 128) ? ’with’ : ’without
+’;
                   }
                   else {
                       printf "child exited with value %d\n", $? >> 8;
                   }
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I see you are not using the return value (system) nor the output (backtick). I recommend you to use system and allways check the return value of the process.