${GDMCONF}
elif [ -d /root/etc/gdm3 ]
then
+ GDMCustomFile=/root/etc/gdm3/custom.conf
+ AutologinParameters="AutomaticLoginEnable=true\n\
+AutomaticLogin=$USERNAME\n\
+TimedLoginEnable=true\n\
+TimedLogin=$USERNAME\n\
+TimedLoginDelay=10"
+
+ # Prevent from updating if parameters already present (persistent usb
+ # key)
+ if ! $(grep -qs '\[daemon\]' $GDMCustomFile)
+ then
+ echo '[daemon]' >> $GDMCustomFile
+ fi
-cat > /root/etc/gdm3/custom.conf << EOF
-[daemon]
-AutomaticLoginEnable=true
-AutomaticLogin=$USERNAME
-TimedLoginEnable=true
-TimedLogin=$USERNAME
-TimedLoginDelay=10
-EOF
-
+ sed -i "s/\[daemon\]/\[daemon\]\n$AutologinParameters/" $GDMCustomFile
fi
if [ -d /root/etc/default/kdm.d/ ]