Sticky bit on directories (cont)

      # Bri and Bree go and copy in their files again, and then...

      bri$ chmod +t .
      bri$ ls -la
      drwxrws--T    2 bri     family    4096 Apr 19  4:43 .
      -rw-r-----    1 bri     family  527244 Apr 19  4:43 img102883.jpg
      -rw-r-----    1 bri     family  462312 Apr 19  4:43 img102884.jpg
      -rw-rw-r--    1 bree    family 1364772 Sep 17 12:20 scan-01.tiff
      -rw-rw-rw-    1 bree    family 2001827 Sep 17 12:20 scan-02.tiff
      
      reegen$ rm *
      rm: cannot unlink `img102883.jpg': Operation not permitted
      rm: cannot unlink `img102884.jpg': Operation not permitted
      rm: cannot unlink `scan-01.tiff': Operation not permitted
      rm: cannot unlink `scan-02.tiff': Operation not permitted

      reegen$ ls -l 
      -rw-r-----    1 bri     family  527244 Apr 19  4:43 img102883.jpg
      -rw-r-----    1 bri     family  462312 Apr 19  4:43 img102884.jpg
      -rw-rw-r--    1 bree    family 1364772 Sep 17 12:20 scan-01.tiff
      -rw-rw-rw-    1 bree    family 2001827 Sep 17 12:20 scan-02.tiff