title: How to change ubuntu to root?
body: <p>I am new to linux. when i list the files under folder 1, i see below result</p>
  
  <pre><code>-rwxrwxrwx 1 root   root      920 Jun  3 10:36 file1.xsd
  -rwxrwxrwx 1 root   root      920 Jun  3 10:36 file2.xsd
  drwxrwxrwx 2 ubuntu ubuntu   4096 Jun 12 11:10 temp
  -rwxrwxrwx 1 ubuntu ubuntu   1853 Jun 19 11:07 file3.xsd
  </code></pre>
  
  <p>for some files(file1 and file2) root root is written after permisionsbut for file3  ubuntu ubuntu is displayed. </p>
  
  <p>what is difference b/w  ubuntu ubuntu and root root ? </p>
  
  <p>How can i change ubuntu ubuntu for file 3 to root root ?</p>