title: zip warning - name not matched
body: <p>I am getting the following error while using zip in my bash script</p>
  
  <p><code>zip warning: name not matched: test.png test2.png</code></p>
  
  <pre><code>#!/bin/bash
  files_to_zip="test.png test2.png"
  zipfile_name=result$(date "+%Y.%m.%d-%H.%M.%S").zip
  zip "$zipfile_name"  "$files_to_zip"
  </code></pre>
  
  <p>Note: The images are in the same directory as the script and when i execute <code>zip test.zip test.png test2.png</code> , the zip get created just fine.</p>