Hello, I suppose this is a designing issue or a bug:
You can remove an empty directory as you like, even if you don't have the right to read, write nor execute: f...@ubuntu:~/Unix_Tutorial_8/5$ mkdir test f...@ubuntu:~/Unix_Tutorial_8/5$ ls -l total 4 drwxr-xr-x 2 fu fu 4096 2009-08-12 06:39 test f...@ubuntu:~/Unix_Tutorial_8/5$ chmod ugo-rwx test/ f...@ubuntu:~/Unix_Tutorial_8/5$ ls -l total 4 d--------- 2 fu fu 4096 2009-08-12 06:39 test f...@ubuntu:~/Unix_Tutorial_8/5$ rmdir test f...@ubuntu:~/Unix_Tutorial_8/5$ ls -l total 0 f...@ubuntu:~/Unix_Tutorial_8/5$ -- Zhoulai FU Ecole Polytechnique (X-2005) Telecom Paris (2010)