diff --git a/CHANGELOG b/CHANGELOG
new file mode 100644
index 0000000..3e679fc
--- /dev/null
+++ b/CHANGELOG
@@ -0,0 +1,3 @@
+Combined autovpn.sh and killvpn.sh into a single script with appropriate GUI prompts.
+Fixed a bug where script attempts to connect to VPN service with blank username and/or password
+Added appropriate author credits in the script(since the script was combined)
diff --git a/autovpn.sh b/autovpn.sh
old mode 100755
new mode 100644
index bdce2a4..4c4607b
--- a/autovpn.sh
+++ b/autovpn.sh
@@ -14,33 +14,59 @@ passwd=$2;
 # Run in root if not already running in it
 if [[ $(whoami) != "root" ]]; then
 	xhost +SI:localuser:root
-	sudo "$0" "$@"
+	#sudo "$0" "$@"
+	sudo bash "$0" "$@"
 	xhost -SI:localuser:root
 	exit
 fi
 
 
 command -v zenity >/dev/null 2>&1 || {
-        if command -v apt-get 2&>1; then
-                apt-get update; apt-get install -y zenity;
-        elif command -v dnf 2&>1; then
-                dnf install -y zenity
-        fi
+if command -v apt-get 2&>1; then
+	apt-get update; apt-get install -y zenity;
+elif command -v dnf 2&>1; then
+	dnf install -y zenity
+fi
 }
 
+# Ask user to connect/disconnect
+
+job=`zenity --entry --height=160 --width=400 --text="Enter to connect (C) or disconnect (D)" --title="Welcome to AutoVPN"`
+# if connect
+
+if [ $job == "connect" -o $job == "c" -o $job == "C" ]
+then 
+	#[ -z $usr ] && read -p "Enter username: " -a usr
+	#[ -z $passwd ] && read -s -p "Enter password: " -a passwd
+
 
+	[ -z $usr ] && usr="$(zenity --entry --height=160 --width=400 --text="Enter your IIIT-H email ID" --title=Authentication)"
 
+	# Escape dollars and remove new line characters in usr
 
-#[ -z $usr ] && read -p "Enter username: " -a usr
-#[ -z $passwd ] && read -s -p "Enter password: " -a passwd
+	usr=$(echo "$usr"| sed  's/\$/\\\$/g')
+	usr="${usr//$'\\n'/}"
 
+	if [ -z $usr ]
+	then 
+		`zenity --error --text="Username cannot be blank/Cancelled"`
+		exit
+	fi       
+	[ -z $passwd ] && passwd="$(zenity --password --height=160 --width=400 --text="Please enter your password" --title=Authentication)"
+	cd;
 
-[ -z $usr ] && usr="$(zenity --entry --height=160 --width=400 --text="Enter your IIIT-H email ID" --title=Authentication)"
-[ -z $passwd ] && passwd="$(zenity --password --height=160 --width=400 --text="Please enter your password" --title=Authentication)"
-cd;
+	# Escape dollars and remove new line characters in passwd
 
+	passwd=$(echo "$passwd"| sed  's/\$/\\\$/g')
+	passwd="${passwd//$'\\n'/}"
 
-command -v openvpn >/dev/null 2>&1 || {
+	if [ -z $passwd ] 
+	then 
+	#	echo Password cannot be blank!
+		`zenity --error --text="Password cannot be blank/Cancelled"`
+		exit
+	fi
+	command -v openvpn >/dev/null 2>&1 || {
 	if command -v apt-get 2&>1; then    # Ubuntu based distros
 		apt-get update; apt-get install -y openvpn;
 	elif command -v dnf 2&>1; then      # Fedora based distros
@@ -48,21 +74,19 @@ command -v openvpn >/dev/null 2>&1 || {
 	fi
 }
 command -v expect >/dev/null 2>&1 || {
-	if command -v apt-get 2&>1; then    # Ubuntu based distros
-		apt-get update; apt-get install -y expect;
-	elif command -v dnf 2&>1; then      # Fedora based distros
-		dnf install -y expect
-	fi
+if command -v apt-get 2&>1; then    # Ubuntu based distros
+	apt-get update; apt-get install -y expect;
+elif command -v dnf 2&>1; then      # Fedora based distros
+	dnf install -y expect
+fi
 }
 
 if grep -q  "nameserver 10.4.20.204" "/etc/resolv.conf";
 then
-sed -i '/nameserver 10.4.20.204/d' /etc/resolv.conf
+	sed -i '/nameserver 10.4.20.204/d' /etc/resolv.conf
 fi
 #apt-get update;
 
-
-
 cd /etc/openvpn;
 #rm -rf *
 if [ -e "ca.crt" ];
@@ -94,45 +118,44 @@ fi
 wget https://vpn.iiit.ac.in/linux_client.conf
 
 # Escape dollars in usr and passwd for expect's send
-usr=$(echo "$usr"| sed  's/\$/\\\$/g')
-passwd=$(echo "$passwd"| sed  's/\$/\\\$/g')
+#usr=$(echo "$usr"| sed  's/\$/\\\$/g')
+#usr="${usr//$'\\n'/}"
+#passwd=$(echo "$passwd"| sed  's/\$/\\\$/g')
+#passwd="${passwd//$'\\n'/}"
 
 #Remove newline chars
 #dt=${dt//$'\n'/}
 #dt=${dt//$'\n'/}
-usr="${usr//$'\\n'/}"
-passwd="${passwd//$'\\n'/}"
+
+#usr="${usr//$'\\n'/}"
+#passwd="${passwd//$'\\n'/}"
+
 #passwd="$(echo "$passwd" | sed -e 's/\n//g')"
 
 
 
 #echo $passwd
 expect <<- DONE
-
 	spawn openvpn --config linux_client.conf;
-
 	expect "Enter Auth Username:" { send "$usr\r" }
-
 	expect "Enter Auth Password:" { send "$passwd\r" }
-
 	expect "Initialization Sequence Completed"
-
 	interact;
 DONE
 
 sleep 12;
 if grep -q  "nameserver 10.4.20.204" "/etc/resolv.conf";
 then
-echo "Nameserver already set. No need for further setting up";
+	echo "Nameserver already set. No need for further setting up";
 else
-sed -i '1i\'"nameserver 10.4.20.204" /etc/resolv.conf;
+	sed -i '1i\'"nameserver 10.4.20.204" /etc/resolv.conf;
 fi
 
 if ! ping -c1 moodle.iiit.ac.in &>/dev/null
 then 
-zenity --error --height=100 --width=400 --title="An Error Occurred" --text="VPN failed to start. Contact the administrator or see troubleshooting on github.com/flyingcharge/AutoVPN"
+	zenity --error --height=100 --width=400 --title="An Error Occurred" --text="VPN failed to start. Contact the administrator or see troubleshooting on github.com/flyingcharge/AutoVPN"
 else
-zenity --info --title="SUCCESS" --text="VPN SUCCESSFULLY RUNNING!"
+	zenity --info --title="SUCCESS" --text="VPN SUCCESSFULLY RUNNING!"
 fi
 sleep 3;
 #num=`history | tail -n 2 | head -n 1 | tr -s ' ' | cut -d ' ' -f 2`;
@@ -140,3 +163,29 @@ sleep 3;
 #history -c;
 
 #export HISTFILE=/dev/null
+# if disconnect 
+
+elif [ $job == "disconnect" -o $job == "d" -o $job == "D" ] 
+then
+
+# AUTHOR : MEGH PARIKH
+# INSTITUTION : IIIT HYDERABAD
+# DATE : 3 December 2017 (commit date on github)
+
+	if [[ $(whoami) != "root" ]]; then
+		sudo "$0" "$@"
+		exit
+	fi
+
+	pkill openvpn
+	sed -i '/nameserver 10.4.20.204/d' /etc/resolv.conf
+#	echo Disconnected successfully!
+	`zenity --info --text="DISCONNECTED SUCCESSFULLY!!" --title="SUCCESS!"`
+
+	# for anything else 
+
+else 
+
+	`zenity --width=200 --height=160 --error --text="Enter C/D only or Operation Cancelled"`
+
+fi
diff --git a/killvpn.sh b/killvpn.sh
deleted file mode 100755
index fb402e4..0000000
--- a/killvpn.sh
+++ /dev/null
@@ -1,9 +0,0 @@
-#!/usr/bin/env bash
-
-if [[ $(whoami) != "root" ]]; then
-	sudo "$0" "$@"
-	exit
-fi
-
-pkill openvpn
-sed -i '/nameserver 10.4.20.204/d' /etc/resolv.conf