--- a/catWrapper.xml	Tue Mar 03 05:06:43 2015 -0500
+++ b/catWrapper.xml	Fri Sep 25 11:07:07 2015 -0400
@@ -1,11 +1,12 @@
-<tool id="cat_multiple" name="Concatenate multiple datasets" version="0.1">
+<tool id="cat_multiple" name="Concatenate multiple datasets" version="0.2">
     <description>tail-to-head</description>
-    <command interpreter="python">
-        catWrapper.py 
-        $out_file1 
+    <command><![CDATA[
+        cat
         #for $file in $input
-            $file
+            "$file"
         #end for
+        > "$out_file1"
+        ]]>
     </command>
     <inputs>
         <param name="input" type="data" label="Concatenate Dataset" multiple="True"/>
@@ -21,48 +22,49 @@
     </tests>
     <help>
 
-.. class:: warningmark
+        .. class:: warningmark
 
-**WARNING:** Be careful not to concatenate datasets of different kinds (e.g., sequences with intervals). This tool does not check if the datasets being concatenated are in the same format. 
+        **WARNING:** Be careful not to concatenate datasets of different kinds (e.g., sequences with intervals). This
+        tool does not check if the datasets being concatenated are in the same format.
 
------
+        -----
 
-**What it does**
+        **What it does**
 
-Concatenates datasets
+        Concatenates datasets
 
------
+        -----
 
-**Example**
+        **Example**
 
-Concatenating Dataset::
+        Concatenating Dataset::
 
-    chrX  151087187  151087355  A  0  -
-    chrX  151572400  151572481  B  0  +
+        chrX 151087187 151087355 A 0 -
+        chrX 151572400 151572481 B 0 +
 
-with Dataset1::
+        with Dataset1::
 
-    chr1  151242630  151242955  X  0  +
-    chr1  151271715  151271999  Y  0  +
-    chr1  151278832  151279227  Z  0  -
-    
-and with Dataset2::
+        chr1 151242630 151242955 X 0 +
+        chr1 151271715 151271999 Y 0 +
+        chr1 151278832 151279227 Z 0 -
 
-    chr2  100000030  200000955  P  0  +
-    chr2  100000015  200000999  Q  0  +
+        and with Dataset2::
 
-will result in the following::
+        chr2 100000030 200000955 P 0 +
+        chr2 100000015 200000999 Q 0 +
+
+        will result in the following::
 
-    chrX  151087187  151087355  A  0  -
-    chrX  151572400  151572481  B  0  +
-    chr1  151242630  151242955  X  0  +
-    chr1  151271715  151271999  Y  0  +
-    chr1  151278832  151279227  Z  0  -
-    chr2  100000030  200000955  P  0  +
-    chr2  100000015  200000999  Q  0  +
+        chrX 151087187 151087355 A 0 -
+        chrX 151572400 151572481 B 0 +
+        chr1 151242630 151242955 X 0 +
+        chr1 151271715 151271999 Y 0 +
+        chr1 151278832 151279227 Z 0 -
+        chr2 100000030 200000955 P 0 +
+        chr2 100000015 200000999 Q 0 +
 
------
+        -----
 
-Adapted from the concatenate tool that comes with galaxy.
+        Adapted from the concatenate tool that comes with galaxy.
     </help>
 </tool>