move 'apu_system' back to 'to_system'

to_system/etc/profile.d/welcome.sh

@@ -0,0 +1,13 @@
+export EDITOR=nano
+echo "-----------------------------------------------------"
+echo "Welcome to $HOSTNAME $(hostname -I)"
+echo "ethernet addr $(cat /sys/class/net/eth0/address)"
+function service_status () {
+    for name in $@; do \
+      enabled=$(systemctl is-enabled ${name} 2> /dev/null) && \
+      echo ${name} $(systemctl is-active ${name}) $enabled; \
+      done | column -t | grep --color=always '\(disabled\|inactive\|$\)' | nl -bn
+}
+alias current='cat /home/l_samenv/boxtools/current'
+service_status router frappy display
+echo "> current  # show currently installed state"