title: How can I view a compressed file content
body: <p>I have a very large file as: <code>filename.bz2</code>, how can I view the file content and do some commands like <code>awk</code> to extract some data into another file without decompress it ? I tried <code>head -50 filename.bz2</code> to view the first 50 lines, but it prints out rubbish and not the what I supposed to view from the file. </p>