The rights and previledges in Linux.

1. The rights on the file system.

 

    Rights             Owner User    Owner Group

    drwxr-xr-x   2 robert               robert                       4096 2008-07-26 11:44 Pictures
    drwxr-xr-x   2 robert               robert                       4096 2008-07-26 11:44 Public

 

    Owner user and Owner Group owns the file or folder.

 

    drwxrwxrwx, from left to right, it means

    (1). d : Dir

    (2). The first rwx(The owner's rights) : read right|write right| execute right

    (3). The second rwx(The user's rights in the same group) : read right|write right| execute right

    (4). The third rwx(Theuser's rights in other groups) : read right|write right| execute right

 

2. The previledges of the user.

     In ubuntu, you can add the previledges

     (1). System -> Administration -> Users and Groups

     (2). Select the Robert user, click the Properties , switch to the User Priviledges , and there you go.