Backslashes

src/freedombone-image-customise

     # Produce a text file on the desktop listing users on the mesh
     cat <<EOF > $rootdir/usr/bin/list-tox-users
 #!/bin/bash
-ethernet_connected=$(cat /sys/class/net/eth0/carrier)
+ethernet_connected=\$(cat /sys/class/net/eth0/carrier)
 users_list=\$(lstox | awk -F ' ' '{\$1=""; print \$0}' | sed -e 's/^[[:space:]]*//' | sort -d | uniq)
 if [ ! \$users_list ]; then
     no_of_users=0
 
     # If ethernet is connected then add the invite icon to help enable
     # SSB nat traversal
-    if [[ "$ethernet_connected" != "0" ]]; then
+    if [[ "\$ethernet_connected" != "0" ]]; then
         if [ ! -f /home/$MY_USERNAME/Desktop/invite.desktop ]; then
             echo '[Desktop Entry]' > /home/$MY_USERNAME/Desktop/invite.desktop
             echo 'Version=1.0' >> /home/$MY_USERNAME/Desktop/invite.desktop
     fi
 
     # If there is no ethernet then remove the invite icon
-    if [[ "$ethernet_connected" == "0" ]]; then
+    if [[ "\$ethernet_connected" == "0" ]]; then
         if [ -f /home/$MY_USERNAME/Desktop/invite.desktop ]; then
             rm /home/$MY_USERNAME/Desktop/invite.desktop
         fi