diff --git a/data/data.dat b/data/data.dat
new file mode 100644
index 0000000..92c24bc
Binary files /dev/null and b/data/data.dat differ
diff --git a/dwl.sh b/dwl.sh
index dc60f79..54caac7 100755
--- a/dwl.sh
+++ b/dwl.sh
@@ -1,3 +1,3 @@
 #!/usr/bin/env bash
 
-python3 /usr/share/linuxDynamicWallpapers/main.py
\ No newline at end of file
+python3 /usr/share/linuxDynamicWallpapers/main.py 
\ No newline at end of file
diff --git a/install.py b/install.py
index 2009678..0f6e047 100644
--- a/install.py
+++ b/install.py
@@ -1,7 +1,7 @@
 import os
 import subprocess
 
-def checkForRoot():
+def checkForRoot(): #Checks whether root priviledges have been provided .
     if(subprocess.getoutput("whoami")!="root"):
         print("Please execute the program as root!!")
         print("Exiting..")
@@ -9,7 +9,7 @@ def checkForRoot():
     else:
         installPreBuildDependencies()
 
-def installPreBuildDependencies():
+def installPreBuildDependencies(): #Installing the pre-build dependencies
     print("Installing dependencies.....\n\nThis may take a few moments.....")
     if(subprocess.getstatusoutput("pip3")[0]!=0):
         os.system("sudo apt install python3-pip -y")
@@ -20,10 +20,10 @@ def installPreBuildDependencies():
     os.system("clear")
     installBuildDependencies()
 
-def installBuildDependencies():
+def installBuildDependencies(): #install the build dependencies
     from pyfiglet import Figlet
     from termcolor import colored
-
+    
     banner = Figlet(font="big")
     print(colored(banner.renderText("Linux Dynamic Wallpapers"),color="yellow"))
     print("\n")
@@ -32,7 +32,7 @@ def installBuildDependencies():
     a = input("checkpoint 1")
     print(colored("Installing Build libraries. This may take some time.",color="green"))
     os.system("sudo apt-get install x11-xserver-utils python3-pyqt5 python3-pyqt5.qtwebengine python3-pyqt5.qtwebchannel libqt5webkit5-dev feh cron -y")
-    os.system("pip3 install Flask pywebview")
+    os.system("pip3 install Flask pywebview argparse")
     b = input("checkpoint 2")
     print(colored("Installing files. This may take a while.",color="green"))
     if(os.path.exists("/usr/share/linuxDynamicWallpapers")):
@@ -40,25 +40,33 @@ def installBuildDependencies():
         os.system("sudo mkdir -p /usr/share/linuxDynamicWallpapers")
     else:
         os.system("sudo mkdir -p /usr/share/linuxDynamicWallpapers")
-    #os.system("sudo cp -r ./data /usr/share/linuxDynamicWallpapers")
+    os.system("sudo cp -r ./data /usr/share/linuxDynamicWallpapers")
     os.system("sudo cp -r ./static /usr/share/linuxDynamicWallpapers")
     os.system("sudo cp -r ./templates /usr/share/linuxDynamicWallpapers")
     os.system("sudo cp -r ./images /usr/share/linuxDynamicWallpapers")
     os.system("sudo cp -r ./dwl.sh /usr/share/linuxDynamicWallpapers")
+    os.system("sudo cp -r ./setdwl.sh /usr/share/linuxDynamicWallpapers")
     os.system("sudo cp -r ./main.py /usr/share/linuxDynamicWallpapers")
     os.system("sudo chmod +x /usr/share/linuxDynamicWallpapers/dwl.sh")
+    os.system("sudo chmod +x /usr/share/linuxDynamicWallpapers/setdwl.sh")
+    os.system("sudo chmod 777 /usr/share/linuxDynamicWallpapers/data/data.dat")
     if(os.path.exists("/usr/bin/dwl")):
         os.system("sudo rm -rf /usr/bin/dwl")
         os.system("sudo ln -s /usr/share/linuxDynamicWallpapers/dwl.sh /usr/bin/dwl")
+    if(os.path.exists("/usr/bin/setdwl")):
+        os.system("sudo rm -rf /usr/bin/setdwl")
+        os.system("sudo ln -s /usr/share/linuxDynamicWallpapers/setdwl.sh /usr/bin/setdwl")
     else:
         os.system("sudo ln -s /usr/share/linuxDynamicWallpapers/dwl.sh /usr/bin/dwl")
+        os.system("sudo ln -s /usr/share/linuxDynamicWallpapers/setdwl.sh /usr/bin/setdwl")
 
     os.system("clear")
     print(colored("Finished!!",color="green"))
     print("\n")
     print(colored("Linux Dynamic Wallpapers have been installed in your system.\n\n",color="blue"))
     print(colored(f"To use it now, just type dwl in the terminal",color="green"))
-def cleanUp():
+
+def cleanUp(): #Clean up the installation files. Not executing as of now
     os.system("rm -rf ./data")
     os.system("rm -rf ./static")
     os.system("rm -rf ./templates")
diff --git a/main.py b/main.py
index 12c0a9e..27024a8 100755
--- a/main.py
+++ b/main.py
@@ -2,10 +2,21 @@ import datetime
 from flask import Flask, render_template, request, url_for
 import webview
 import os
+import pickle
+import argparse
 import multiprocessing
 import subprocess
 
+"""
+The program first reads for the required info stored in the ./data/data.dat binary file.
+"""
 app = Flask(__name__)
+parser = argparse.ArgumentParser()
+parser.add_argument("--type",type=str,required=False)
+args = parser.parse_args()
+fr = open(r"/usr/share/linuxDynamicWallpapers/data/data.dat","rb")
+data = pickle.load(fr)
+fr.close()
 
 @app.context_processor
 def override_url_for():
@@ -19,35 +30,37 @@ def dated_url_for(endpoint, **values):
                                  endpoint, filename)
             values['q'] = int(os.stat(file_path).st_mtime)
     return url_for(endpoint, **values)
+
+
 def setDEWallpaper(de,style):
-    if style in ["bitday","firewatch","gradient"]:
+    if style in ["bitday","firewatch","gradient"]: #only these 3 types have .png file extension.
         type = ".png"
     else:
         type = ".jpg"
 
-    if de in ["/usr/share/xsessions/plasma","NEON","neon","PLASMA","Plasma","plasma","KDE","Kde","kde"]:
+    if de in ["/usr/share/xsessions/plasma","NEON","neon","PLASMA","Plasma","plasma","KDE","Kde","kde"]: #Set Wallpaper for Plasma DE
         print("Inside",de)
         os.system("qdbus org.kde.plasmashell /PlasmaShell org.kde.PlasmaShell.evaluateScript 'var allDesktops = desktops();print (allDesktops);for (i=0;i<allDesktops.length;i++) {d = allDesktops[i];d.wallpaperPlugin = \"org.kde.image\";d.currentConfigGroup = Array(\"Wallpaper\", \"org.kde.image\", \"General\");d.writeConfig(\"Image\", \"file:///usr/share/linuxDynamicWallpapers/images/"+style+"/"+str(datetime.datetime.now().hour)+type+"\")}'")
 
-    elif de in ["cinnamon","Cinnamon"]:
+    elif de in ["cinnamon","Cinnamon"]: # Set Wallpaper for Cinnamon DE
         print("Inside",de)
         os.system(f"gsettings set org.cinnamon.desktop.background picture-uri \"file:///usr/share/linuxDynamicWallpapers/images/{style}/{datetime.datetime.now().hour}"+f"{type}\"")
     
-    elif de in ["Xfce Session","xfce session","XFCE","xfce","Xubuntu","xubuntu"]:
+    elif de in ["Xfce Session","xfce session","XFCE","xfce","Xubuntu","xubuntu"]: #Set Wallpaper for XFCE DE
         print("Inside",de)
         SCREEN = subprocess.getoutput("echo $(xrandr --listactivemonitors | awk -F ' ' 'END {print $1}' | tr -d \:)")
         MONITOR = subprocess.getoutput("echo $(xrandr --listactivemonitors | awk -F ' ' 'END {print $2}' | tr -d \*+)")
         os.system(f"xfconf-query --channel xfce4-desktop --property /backdrop/screen{SCREEN}/monitor{MONITOR}/workspace0/last-image --set usr/share/linuxDynamicWallpapers/images/{style}/{datetime.datetime.now().hour}"+f"{type}")
     
-    elif de in ["MATE","Mate","mate"]:
+    elif de in ["MATE","Mate","mate"]: #Set Wallpaper for Mate DE
         print("Inside",de)
         os.system(f"gsettings set org.mate.background picture-filename usr/share/linuxDynamicWallpapers/images/{style}/{datetime.datetime.now().hour}"+f"{type}")
 
-    elif de in ["LXDE","Lxde","lxde"]:
+    elif de in ["LXDE","Lxde","lxde"]: #Set Wallpaper for LXDE
         print("Inside",de)
         os.system("pcmanfm --set-wallpaper=\"usr/share/linuxDynamicWallpapers/images/{style}/{datetime.datetime.now().hour}"+f"{type}\"")
 
-    elif de in ["PANTHEON","Pantheon","pantheon","GNOME","Gnome","gnome","Gnome-xorg","gnome-xorg","UBUNTU","Ubuntu","ubuntu","DEEPIN","Deepin","deepin","POP","Pop","pop"]:
+    elif de in ["PANTHEON","Pantheon","pantheon","GNOME","Gnome","gnome","Gnome-xorg","gnome-xorg","UBUNTU","Ubuntu","ubuntu","DEEPIN","Deepin","deepin","POP","Pop","pop"]: #Set Wallpaper for Ubuntu, Pop, Pantheon DE
         print("Inside",de)
         os.system(f"gsettings set org.gnome.desktop.background picture-uri file:///usr/share/linuxDynamicWallpapers/images/{style}/{datetime.datetime.now().hour}"+f"{type}")
     
@@ -58,15 +71,23 @@ def setDEWallpaper(de,style):
 
 @app.route("/")
 def index():
-    return render_template("index.html")
+    return render_template("index.html") #Display the Flask Frontend.
 
 @app.route("/setWallpaper")
 def setWallpaper():
     wallpaper = request.args.get("wallpaper").lower()
     print(wallpaper)
     DE = subprocess.getoutput("echo $DESKTOP_SESSION")
+    previousWallpaper = data["currentWallpaper"]
     setDEWallpaper(DE,wallpaper)
-    #os.system(f'PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin DISPLAY=:0 DESKTOP_SESSION=plasma DBUS_SESSION_BUS_ADDRESS="unix:path=/run/user/1000/bus" /usr/bin/dwall -s {wallpaper}')
+    data["DE"] = DE
+    data["currentWallpaper"] = wallpaper
+    fw = open("/usr/share/linuxDynamicWallpapers/data/data.dat","wb")
+    pickle.dump(data,fw)
+    fw.close()
+    os.system(f'(crontab -u {subprocess.getoutput("whoami")} -l ; echo "* * * * * setdwl {wallpaper}") | crontab -u {subprocess.getoutput("whoami")} -') #Sets a cronjob for the wallpaper to change every hour.
+    os.system(f'crontab -u {subprocess.getoutput("whoami")} -l | grep -v "{previousWallpaper}"  | crontab -u {subprocess.getoutput("whoami")} -')
+    os.system("/etc/init.d/cron reload")
     os.system(f'notify-send "Linux Dynamic Wallpapers" "Set wallpaper to {wallpaper.upper()}" ')
 
 def runServer():
@@ -74,9 +95,15 @@ def runServer():
 
 def onclose():
     p1.kill()
-if __name__ == "__main__":
-    p1 = multiprocessing.Process(target=runServer)
-    p1.start()
-    window = webview.create_window("Linux Dynamic Wallpapers","http://localhost:5000")
-    window.closing+=onclose
-    webview.start(http_server=True)
+
+if __name__ == "__main__": 
+    if args.type == None: #For setting the Wallpaper using GUI
+        p1 = multiprocessing.Process(target=runServer)
+        p1.start()
+        window = webview.create_window("Linux Dynamic Wallpapers","http://localhost:5000")
+        window.closing+=onclose
+        webview.start(http_server=True)
+    else:
+        f = open("/usr/share/linuxDynamicWallpapers/data/data.dat","rb") #For changing the wallpaper every hour, managed by setdwl.sh
+        data = pickle.load(f)
+        setDEWallpaper(data["DE"],args.type)
diff --git a/setdwl.sh b/setdwl.sh
new file mode 100644
index 0000000..67c0ee6
--- /dev/null
+++ b/setdwl.sh
@@ -0,0 +1,3 @@
+#!/usr/bin/env bash
+
+python3 /usr/share/linuxDynamicWallpapers/main.py --type $1
\ No newline at end of file