title: centos free space on disk not updating
body: <p>I am new to the linux and working with centos system ,
  By running command df -H it is showing 82% if full, that is only 15GB is free.</p>
  
  <p>I want some more extra spaces, so using WINSCP i hav done shift deleted the 15G record.</p>
  
  <p>and execured df -H once again, but still it is showing 15 GB free. but the free size of the deleted 
  file where it goes.</p>
  
  <p>Plese help me out in finding solution to this</p>