fix boxtools for rpi

- remove to_cm4
- create replace_in_file

to_system/etc/profile.d/welcome.sh

@@ -1,7 +1,7 @@
 export EDITOR=nano
 echo "-----------------------------------------------------"
 echo "Welcome to $HOSTNAME $(hostname -I)"
-echo "ethernet addr $(cat /sys/class/net/eth0/address) .. $(cat /sys/class/net/eth3/address)"
+echo "ethernet addr $(cat /sys/class/net/eth0/address)"
 function service_status () {
     for name in $@; do \
       enabled=$(systemctl is-enabled ${name} 2> /dev/null) && \