remove_dpkg_rc.sh

# Let’s see all the packages marked as rc by dpkg. Know more about the state rc. 
# This state means that the configuration files are not yet removed. You can see how a single package can be removed.
# $ dpkg --list |grep "^rc"
# rc  bsh                                             2.0b4-10ubuntu2                                 Java scripting environment (BeanShell) Versi
# rc  devicekit-disks                                 007-2ubuntu6                                    abstraction for enumerating block devices
# rc  devicekit-power                                 011-1ubuntu2                                    abstraction for power management
# rc  dvipdfmx                                        1:20090115-1.2                                  A DVI to PDF translator with CJK support
# rc  gnome-blackjack                                 1:2.28.0-0ubuntu3                               Blackjack casino card game
# rc  groovy                                          1.6.4-4ubuntu2                                  Agile dynamic language for the Java Virtual 
# rc  kdepim-runtime-data                             4:4.3.2-0ubuntu1                                shared data files for the KDE 4 base runtime
# Let’s extract out the packages marked as rc

# $ dpkg --list |grep "^rc" | cut -d " " -f 3
# bsh
# devicekit-disks
# devicekit-power
# dvipdfmx
# gnome-blackjack
# groovy
# kdepim-runtime-data
# Now let’s remove all the packages marked as rc.

# $ dpkg --list |grep "^rc" | cut -d " " -f 3 | xargs sudo dpkg --purge