diff --git a/README.md b/README.md
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+# xmllint demo
+
+> A simple bash script to explore xmllint usage
+
+[xmllint Documentation](http://www.xmlsoft.org/xmllint.html)<br />
+
+### Installation
+Ubuntu, run apt-get install libxml2-utils (if not installed already)<br />
+Mac OS X (Yosemite), installed by default
+
+### xmllint usage demos in this project
+1. --xpath
+
+### Running the demo
+
+Project includes below sample xml files<br/>
+[books.xml](data/books.xml)<br/>
+[food.xml](data/food.xml)<br/>
+
+### Make app.sh executable and run the script
+    ./app.sh data/food.xml
+    ./app.sh data/books.xml
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diff --git a/app.sh b/app.sh
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+#!/bin/bash
+
+function main() {
+  # check if file is food.xml
+  if [ $1 == 'data/food.xml' ]; then
+    processBreakfastMenu $1
+  # check if file is books.xml
+  elif [ $1 == 'data/books.xml' ]; then
+    processBookstore $1
+  fi
+}
+
+function processBreakfastMenu() {
+  echo $'usage of --path /breakfast_menu/food[1]\n'
+  xmllint --xpath '/breakfast_menu/food[1]' $1
+}
+
+function processBookstore() {
+  echo $'usage of --path /bookstore/book[@category="cooking"]/author/text()\n'
+  xmllint --xpath '/bookstore/book[@category="cooking"]/author/text()' $1
+}
+
+echo 'File being read -' $1
+echo $'Output...\n'
+
+main $1
+
+echo $'\n\n.........'
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diff --git a/data/books.xml b/data/books.xml
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+<?xml version="1.0" encoding="UTF-8"?>
+<bookstore>
+  <book category="cooking">
+    <title lang="en">Everyday Italian</title>
+    <author>Giada De Laurentiis</author>
+    <year>2005</year>
+    <price>30.00</price>
+  </book>
+  <book category="children">
+    <title lang="en">Harry Potter</title>
+    <author>J K. Rowling</author>
+    <year>2005</year>
+    <price>29.99</price>
+  </book>
+  <book category="web">
+    <title lang="en">XQuery Kick Start</title>
+    <author>James McGovern</author>
+    <author>Per Bothner</author>
+    <author>Kurt Cagle</author>
+    <author>James Linn</author>
+    <author>Vaidyanathan Nagarajan</author>
+    <year>2003</year>
+    <price>49.99</price>
+  </book>
+  <book category="web">
+    <title lang="en">Learning XML</title>
+    <author>Erik T. Ray</author>
+    <year>2003</year>
+    <price>39.95</price>
+  </book>
+</bookstore> 
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diff --git a/data/food.xml b/data/food.xml
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+++ b/data/food.xml
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+<?xml version="1.0" encoding="UTF-8"?>
+<breakfast_menu>
+  <food>
+    <name>Belgian Waffles</name>
+    <price>$5.95</price>
+    <description>Two of our famous Belgian Waffles with plenty of real maple syrup</description>
+    <calories>650</calories>
+  </food>
+  <food>
+    <name>Strawberry Belgian Waffles</name>
+    <price>$7.95</price>
+    <description>Light Belgian waffles covered with strawberries and whipped cream</description>
+    <calories>900</calories>
+  </food>
+  <food>
+    <name>Berry-Berry Belgian Waffles</name>
+    <price>$8.95</price>
+    <description>Light Belgian waffles covered with an assortment of fresh berries and whipped cream</description>
+    <calories>900</calories>
+  </food>
+  <food>
+    <name>French Toast</name>
+    <price>$4.50</price>
+    <description>Thick slices made from our homemade sourdough bread</description>
+    <calories>600</calories>
+  </food>
+  <food>
+    <name>Homestyle Breakfast</name>
+    <price>$6.95</price>
+    <description>Two eggs, bacon or sausage, toast, and our ever-popular hash browns</description>
+    <calories>950</calories>
+  </food>
+</breakfast_menu>
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