-e "s/^TimedLogin=.*\$/TimedLogin=${USERNAME}/" \
-e "s/^TimedLoginDelay=.*\$/TimedLoginDelay=10/" \
${GDMCONF}
+elif [ -d /root/etc/gdm3 ]
+then
+ GDMCustomFile=/root/etc/gdm3/custom.conf
+ AutologinParameters="AutomaticLoginEnable=true\n\
+AutomaticLogin=$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
+
+ sed -i "s/\[daemon\]/\[daemon\]\n$AutologinParameters/" $GDMCustomFile
fi
if [ -d /root/etc/default/kdm.d/ ]