|   | 1 |  initial version  | 
It seems that you installed Sage as the root user, which is not the correct way. If you plan to launch the sage command from the usrname user, you can go into your Sage directory and type :
sudo chown -R usrname:usrname .
(don't forget the dot at the end). Then you can launch Sage as the user usrname:
./sage
 Copyright Sage, 2010. Some rights reserved under creative commons license. Content on this site is licensed under a Creative Commons Attribution Share Alike 3.0 license.
 
                
                Copyright Sage, 2010. Some rights reserved under creative commons license. Content on this site is licensed under a Creative Commons Attribution Share Alike 3.0 license.