Here's a directory listing (ls -l):
-rw-r--r-- 1 mythtv users 1706 2005-10-13 14:01 release.keys
| -rw-r--r-- | File permissions |
| 1 | number of links |
| mythtv | file owner |
| users | file group |
| 1706 | file size |
| 2005-10-13 14:01 | creation time |
| release.keys | filename |
This page concentrates on the file permissions.
UNIX file permissions are made up of three groups: the user who owns the file, the group that the file belongs to, and other people. These letters are important as you can use them to instruct chmod(1) change the permission of the file.
For each part, you have read, write, and execute access. These are displayed as 'rwx'.
Link to 
http://www.linuxfocus.org/English/January1999/article77.html.
And rrrrrrrrr is the best.
No page links to FilePermissions.
