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sudo su

apt-get purge consolekit desktop-base* desktop-file-utils* gnome-icon-
+theme* gnome-themes-standard* hicolor-icon-theme* leafpad* lxde* lxde
+-core* midori* xserver-common* xserver-xorg* xserver-xorg-core* xserv
+er-xorg-input-all* xserver-xorg-input-evdev* xserver-xorg-input-synap
+tics* xserver-xorg-video-fbdev*

apt-get -y update && apt-get -y dist-upgrade && apt-get -y autoremove 
+&& apt-get -y autoclean

apt-get install dropbear openssh-client

/etc/init.d/ssh stop

sed -i 's/NO_START=1/NO_START=0/g' /etc/default/dropbear

/etc/init.d/dropbear start

apt-get purge openssh-server

dpkg-reconfigure dash

sed -i '/[2-6]:23:respawn:\/sbin\/getty 38400 tty[2-6]/s%^%#%g' /etc/i
+nittab

gpu_mem=16

echo "net.ipv6.conf.all.disable_ipv6=1" > /etc/sysctl.d/disableipv6.co
+nf

echo 'blacklist ipv6' >> /etc/modprobe.d/blacklist

sed -i '/::/s%^%#%g' /etc/hosts

reboot

pi@shemp ~ $ free -h
             total       used       free     shared    buffers     cac
+hed
...
-/+ buffers/cache:        14M       471M
Swap:          99M         0B        99M

pi@raspberrypi ~ $ free -h
             total       used       free     shared    buffers     cac
+hed
...
-/+ buffers/cache:        24M       414M
Swap:          99M         0B        99M