title: Error while unzipping a file in shell script. - need PK compat. v5.1 (can do v4.6)
body: <p>I'm using <code>unzip test.zip</code> in a Shell script. But while executing this line i get an error </p>
  
  <pre><code>Archive:  test.zip
     skipping: hello.pdf                need PK compat. v5.1 (can do v4.6)
  </code></pre>
  
  <p>Even if i try to run this single command from the terminal in ubuntu it throws the same error <code>need PK compat. v5.1 (can do v4.6)</code></p>
  
  <p>Uninstalling and reinstalling unzip also didn't work. Alternately I had to install <code>p7zip-full</code> to unzip the test.zip file. How to fix this and use <code>unzip</code> in the shell script??</p>