title: How can I find and run the keytool
body: <p>I am reading an development guide of Facebook Developers at <a href="http://developers.facebook.com/docs/guides/mobile/#android." rel="noreferrer">here</a> </p>
  
  <p>It says that I must use keytool to export the signature for my app such as:</p>
  
  <pre><code>keytool -exportcert -alias androiddebugkey -keystore ~/.android/debug.keystore | openssl sha1 -binary | openssl base64
  </code></pre>
  
  <p>I do not know how to find the keytool in order to run it. I tried to open a Windows command prompt and paste the above command, but it did not work.</p>