Index: /trunk/tools/czarclean.pl
===================================================================
--- /trunk/tools/czarclean.pl	(revision 29275)
+++ /trunk/tools/czarclean.pl	(revision 29276)
@@ -32,17 +32,18 @@
 if (!$begin) {
     $quit=1;
-    print "* REQUIRED: choose a begin date             -b <datetime>                (default=7am this morning)\n";
+    print "* REQUIRED: choose a begin date             -b <datetime>\n";
 }
 if (!$end) {
-    $end=$begin;
-    print "* OPTIONAL: choose an end date              -e <datetime>                (default=$end)\n";
+
+    if($begin) {$end=$begin;} else {$end="NULL";}
+    print "* OPTIONAL: choose an end date              -e <datetime>                   (default=$end)\n";
 }
 if (!$czarDbName) {
     $czarDbName = "czardb";
-    print "* OPTIONAL: choose czar Db name             -d <name>                    (default=$czarDbName\n";
+    print "* OPTIONAL: choose czar Db name             -d <name>                       (default=$czarDbName\n";
 }
 if (!$interval) {
     $interval = "30 MINUTE";
-    print "* OPTIONAL: choose time interval            -i <'1 hour'|'2 hour'|etc>   (default=$interval)\n";
+    print "* OPTIONAL: choose time interval            -i <'30 MINUTE'|'1 hour'|etc>   (default=$interval)\n";
 }
 print "*\n*******************************************************************************\n";