diff --git a/ren b/ren
new file mode 100755
index 0000000..76cb55d
--- /dev/null
+++ b/ren
@@ -0,0 +1,31 @@
+#!/bin/sh
+# renext - Mass File Rename
+# Copyright (c) 2006, TundraWare Inc., Des Plaines, IL USA
+# All Rights Reserved.  Non-Commercial Use Hereby Permitted.
+
+RCSID="$Id: ren,v 0.101 2006/08/23 21:02:25 toor Exp $"
+
+
+arg=""
+
+if [ $1_ = -v_ ]
+then
+  arg=$1
+  shift
+fi
+
+if [ $# != 2 ]
+then
+  echo "usage: ren [-v]  oldstring newstring"
+  echo "      Renames filenames containing 'oldstring' replacing with 'newstring'"
+
+else
+  for f in `ls -a 2>/dev/null`
+    do
+      tgt=`echo $f | sed s/${1}/${2}/`
+      if [ $f != $tgt ]
+      then
+        mv ${arg} $f $tgt
+      fi
+    done
+fi