title: you do not have the permissions necessary to view the contents of eclipse
body: <p>i try to copy folder 'eclipse' into /usr using the command 'sudo cp -r /eclipse /usr/'</p>
  
  <p>and then i click on folder 'eclipse' but it said 'you do not have the permissions necessary to view the contents of eclipse'</p>
  
  <p>it is on ubuntu and i know it is about the permissions but i do not know how to solve it</p>