afournier:/home/fou# aptitude search dolphin
i A dolphin                                                               - file manager for KDE 4                                                          
afournier:/home/fou# aptitude purge dolphin
The following packages will be REMOVED:  
  dolphin{p} 
0 packages upgraded, 0 newly installed, 1 to remove and 95 not upgraded.
Need to get 0B of archives. After unpacking 2441kB will be freed.
Do you want to continue? [Y/n/?] n
Abort.
afournier:/home/fou#