title: How to unzip the file_name.csv.gz files to .csv
body: <p>I want to unzip files which are in *.csv.gz format to .csv format.</p>
  <p>When I tried with these commands <code>$ gzip -d file.gz</code> and <code>$ gzip -f file.gz</code>, it is showing like</p>
  <pre><code>gzip: IQ.gz: No such file or directory
  gzip: Envoy.gz: No such file or directory
  gzip: compressed data not read from a terminal. Use -f to force decompression.
  For help, type: gzip -h
  </code></pre>
  <p>Please help me on this to how to unzip.</p>