Index: trunk/ippScripts/scripts/detrend_reject_imfile.pl
===================================================================
--- trunk/ippScripts/scripts/detrend_reject_imfile.pl	(revision 10538)
+++ trunk/ippScripts/scripts/detrend_reject_imfile.pl	(revision 10700)
@@ -247,5 +247,10 @@
 }
 
-END { system("sync") == 0 or die "failed to execute sync: $!" }
+END {
+    my $status = $?;
+    system("sync") == 0
+        or die "failed to execute sync: $!" ;
+    $? = $status;
+}