/usr/bin/diff --ignore-matching-lines=.*{$Id:|$Header:}.* -u arr_script.orig arr_script
--- arr_script.orig	Wed Sep  8 15:57:17 1999
+++ arr_script	Wed Sep  8 15:57:56 1999
@@ -10,8 +10,7 @@
   TOLERANCE=15
   MAX_RETRIES=3
 
-  NETPERF="/usr/local/netperf/netperf"
-  NETPERF="./netperf"
+  NETPERF="%%PREFIX%%/netperf/netperf"
 
   NPROC_LIST=""
   RR_SIZES=""