title: Linux - modify file modify/access/change time
body: <p>I read an article about new steganographic method: "Time is on my side: Steganography in filesystem metadata" <a href="http://www.sciencedirect.com/science/article/pii/S1742287616300433" rel="nofollow noreferrer">http://www.sciencedirect.com/science/article/pii/S1742287616300433</a>. It is very interesting and makes me thinking about one thing. </p>
  
  <p>Is it possible to manipulate file modify/access/change time metedata using C or any other language in Linux OS?
  I found method which is using <b><i>touch</i></b> command, but it creates file with specific tag value. I would like to find way to modify this metadata in existing one. </p>