Checking of system type

src/freedombone-utils-config

             CHECK_MESSAGE=$"Check your internet connection, /etc/network/interfaces and /etc/resolv.conf, then delete $COMPLETION_FILE, run 'rm -fR /var/lib/apt/lists/* && apt-get update --fix-missing' and run this script again. If hash sum mismatches persist then try setting $DEBIAN_REPO to a different mirror and also change /etc/apt/sources.list."
         fi
     fi
+}
+
+function check_system_type {
+    if [ ${#SYSTEM_TYPE} -eq 0 ]; then
+        echo $'Unknown system type'
+        exit 763572
+    fi
     echo "System type: $SYSTEM_TYPE"
 }
 

src/freedombone-utils-setup

     function_check read_configuration
     read_configuration
 
+    function_check check_system_type
+    check_system_type
+
     function_check upgrade_installation
     upgrade_installation