option to enable display control during installation and some bugfixes (#119)

install.sh

@@ -132,6 +132,12 @@ update_config(){
   fi
   sed -i "s/rpi-MQTT-monitor/${TOPIC}/" src/config.py
 
+  printf "Do you need to control your monitors? (default is No): "
+  read CONTROL
+  if [[ "$CONTROL" =~ ^([yY][eE][sS]|[yY])$ ]]; then
+    sed -i "s/display_control = False/display_control = True/g" src/config.py
+  fi
+
   print_green  "+ config.py is updated with provided settings"
 
   # Get the local version

src/rpi-cpu2mqtt.py

@@ -52,9 +52,12 @@ def check_used_space(path):
 def check_cpu_load():
     p = subprocess.Popen("uptime", shell=True, stdout=subprocess.PIPE).communicate()[0]
     cores = subprocess.Popen("nproc", shell=True, stdout=subprocess.PIPE).communicate()[0]
+    try:
         cpu_load = str(p).split("average:")[1].split(", ")[0].replace(' ', '').replace(',', '.')
         cpu_load = float(cpu_load) / int(cores) * 100
         cpu_load = round(float(cpu_load), 1)
+    except Exception:
+        cpu_load = 0
 
     return cpu_load
 
@@ -118,7 +121,10 @@ def check_model_name():
    if model_name == '':
         full_cmd = "cat /proc/cpuinfo  | grep 'name'| uniq"
         model_name = subprocess.Popen(full_cmd, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE).communicate()[0].decode("utf-8")
+        try:
             model_name = model_name.split(':')[1].replace('\n', '')
+        except Exception:
+            model_name = 'Unknown'
 
    return model_name
 
@@ -133,7 +139,10 @@ def check_rpi5_fan_speed():
 def get_os():
     full_cmd = 'cat /etc/os-release | grep -i pretty_name'
     pretty_name = subprocess.Popen(full_cmd, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE).communicate()[0].decode("utf-8")
+    try:
         pretty_name = pretty_name.split('=')[1].replace('"', '').replace('\n', '')
+    except Exception:
+        pretty_name = 'Unknown'
         
     return(pretty_name)