added comments to dip.sh

dhiraagu-ddns/dip.sh

@@ -1,11 +1,12 @@
 #!/bin/bash
+
+#Import Credentials
 source .env
 
 DHIRAAGU_LOGIN_URL='https://portal.dhivehinet.net.mv/adsls/login_api'
 DHIRAAGU_HOME_URL='https://portal.dhivehinet.net.mv/home'
 
-
-
+#Set AUTH, login to generate cookie in /tmp directory and regext to extract AUTH status.
 AUTH=$(curl -s -c /tmp/dcookies \
     	 --data-urlencode data[adsl][username]=$DHIRAAGU_USERNAME \
     	 --data-urlencode data[adsl][password]=$DHIRAAGU_PASSWORD \
@@ -13,6 +14,7 @@ AUTH=$(curl -s -c /tmp/dcookies \
 			| awk -F ',' '{print $2}' \
 			| cut --complement -d ':' -f 1)
 
+#Check if Dhiraagu Username and password is correct before continuing. Print error, delete the cookie and stop script if any errors.
 if [ "$AUTH" = "1" ]
 	then
 		:
@@ -27,7 +29,7 @@ else
                 exit
 fi
 
-
+#Set DHIRAAGU_IP, login with generated cookie and some regex to extract Dhiraagu IP address
 DHIRAAGU_IP=$(curl -s -b /tmp/dcookies \
 		 $DHIRAAGU_HOME_URL \
 			| grep 'IP Address' -A1 \
@@ -36,6 +38,8 @@ DHIRAAGU_IP=$(curl -s -b /tmp/dcookies \
 			| cut -f1 -d '<' \
 			| cut --complement -d '>' -f 1)
 
+#Print IP address to console
 echo IP Address = $DHIRAAGU_IP
 
+#Delete the cookie from /tmp directory
 rm /tmp/dcookies