By default, the file owner is the user who created it. As the root user, you can change the ownerships of files.
To change file ownerships
1. Locate the file for which you want to set the ownership.
2. Right-click the file, and click Properties.
3. Click the Permissions tab.
4. In the Ownership section, choose the owner from the Owner list box.
5. Choose the group from the Group list box.