Help on terminal added to the script, Readme.md modified

Readme.md

@@ -38,6 +38,10 @@ En la parte principal de nuestro código, se inicia un ciclo if que evaluará lo
 controlará modificando el registro *brightness* con el comando *echo*, para el parpadeo del
 LED se usará el comando *sleep* que definirá el tiempo de inicio y apagado en segundos.
 
+Si el usuario no conoce los comandos, puede usar *help* para desplegar la lista de los comandos anteriormente
+mencionados, o bien al ingresar un comando erróneo saldrá una alerta que indicará que el comando es incorrecto y
+mostrará todos los comandos a usar.
+
 ```console
 echo "The LED3 user is starting"
  if [ "$1" == "on" ]; then
@@ -49,13 +53,27 @@ echo "The LED3 user is starting"
          removeTrigger
          echo "0" >> "$LED3_PATH/brightness"
  elif [ "$1" == "blink" ]; then
-	"LED blinking"
-	removeTrigger
-	echo "1" >> "$LED3_PATH/brightness"
-	sleep 0.5
-	echo "0" >> "$LED3_PATH/brightness"
-	sleep 0.5
+	     "LED blinking"
+	      removeTrigger
+          echo "1" >> "$LED3_PATH/brightness"
+	      sleep 0.5
+	     echo "0" >> "$LED3_PATH/brightness"
+	     sleep 0.5
+ elif [ "$1" == "help" ]; then
+	   echo "This is an application to control User LED 3"
+	   echo "List of commands: "
+       echo "on - Powers on the LED"
+	   echo "off - Powers off the LED"
+	   echo "blink - Makes the LED blink"
+
+else
+	   echo "Error: This is not a command for this application"
+	   echo "These are the commands you can use: "
+	   echo "on - Powers on the LED"
+	   echo "off - Powers off the LED"
+	   echo "blink - Makes the LED blink"	
  fi
+ 
  echo "Done" 
  ```
  

blink_LED3.sh

@@ -7,20 +7,33 @@ function removeTrigger
 }
  
 echo "The LED3 user is starting"
- if [ "$1" == "on" ]; then
+if [ "$1" == "on" ]; then
         echo "LED on"
          removeTrigger
          echo "1" >> "$LED3_PATH/brightness"
- elif [ "$1" == "off" ]; then
+elif [ "$1" == "off" ]; then
          echo "LED off"
          removeTrigger
          echo "0" >> "$LED3_PATH/brightness"
- elif [ "$1" == "blink" ]; then
+elif [ "$1" == "blink" ]; then
 	"LED blinking"
 	removeTrigger
 	echo "1" >> "$LED3_PATH/brightness"
 	sleep 0.5
 	echo "0" >> "$LED3_PATH/brightness"
 	sleep 0.5
- fi
- echo "Done"                
+elif [ "$1" == "help" ]; then
+	echo "This is an application to control User LED 3"
+	echo "List of commands: "
+       	echo "on - Powers on the LED"
+	echo "off - Powers off the LED"
+	echo "blink - Makes the LED blink"
+
+else
+	echo "Error: This is not a command for this application"
+	echo "These are the commands you can use: "
+	echo "on - Powers on the LED"
+	echo "off - Powers off the LED"
+	echo "blink - Makes the LED blink"	
+fi
+echo "Done"