diff --git a/install_ubuntu.sh b/install_ubuntu.sh
index 074dbd8..21cdf5c 100755
--- a/install_ubuntu.sh
+++ b/install_ubuntu.sh
@@ -1,4 +1,4 @@
-
+#!/bin/bash
 # ubuntu hangs if network interface is not optional
 sudo sed -i '/dhcp4/a\      optional: yes' /etc/netplan/00-installer-config-wifi.yaml
 sudo sed -i '/dhcp4/a\      optional: yes' /etc/netplan/00-installer-config.yaml
@@ -14,20 +14,23 @@ Pin-Priority: 1000
 sudo apt update
 sudo apt install -y nala
 sudo nala install -y \
-xorg `# for graphics` \
-make `# for compiling gui` \
-gcc  `# for compiling gui` \
-libx11-dev  `# for compiling dwm` \
-libxft-dev  `# for compiling dwm` \
-libxinerama-dev  `# for compiling dwm` \
-libharfbuzz-dev  `# for compiling st` \
-suckless-tools   `# for dmenu` \
-ncdu  		 `# for disk usage analysys` \
+xorg 		`# for graphics` \
+make 		`# for compiling gui` \
+gcc  		`# for compiling gui` \
+libx11-dev  	`# for compiling dwm` \
+libxft-dev  	`# for compiling dwm` \
+libxinerama-dev `# for compiling dwm` \
+libharfbuzz-dev `# for compiling st` \
+suckless-tools  `# for dmenu` \
+ncdu  		`# for disk usage analysys` \
+brightnessctl   `# for keyboard backlight` \
+xcompmgr  	`# for st opacity` \
 telegram-desktop \
 slack \
-xfe `# classic file manager` \
-surf `# suckless browser` \
-firefox
+xfe 		`# classic file manager` \
+surf 		`# suckless browser` \
+firefox \
+python3
 
 
 
@@ -41,27 +44,40 @@ then
   git clone https://git.digitalstudium.com/digitalstudium/ubuntu-gui ~/gui
 fi
 
-# compiling dwm
-if ! command -v dwm &> /dev/null
+for tool in dwm st sent
+do	
+  # compiling dwm
+  if ! command -v $tool &> /dev/null
+  then
+    cd ~/gui/$tool
+    sudo make install clean
+    cd -
+  fi  
+done
+
+echo dwm > ~/.xinitrc  # for starting dwm when startx
+
+for tool in create_systemd_service.py create_systemd_timer.py set_brightness.sh update_gui.sh
+do	
+  if ! command -v $tool &> /dev/null
+  then
+    sudo cp $tool /usr/local/bin
+  fi  
+done
+
+git config --global user.name "Digital Studium"
+git config --global user.email "digitalstudium001@gmail.com"
+
+sudo create_systemd_service.py gui-updater /usr/local/bin/update_gui.sh
+sudo create_systemd_timer.py gui-updater '*-*-* *:*:*'
+
+if [ ! -d ~/.dwm ]
 then
-  cd ~/gui/dwm
-  sudo make install clean
-  cd -
-  echo dwm > ~/.xinitrc  # for starting dwm when startx
+  mkdir $HOME/.dwm
 fi  
-
-# compiling st
-if ! command -v st &> /dev/null
-then
-  cd ~/gui/st
-  sudo make install clean
-  cd -
-fi
-
-# compiling sent
-if ! command -v sent &> /dev/null
-then
-  cd ~/gui/sent
-  sudo make install clean
-  cd -
-fi
+echo "firefox &" > $HOME/.dwm/autostart.sh
+echo "xcompmgr &" >> $HOME/.dwm/autostart.sh
+echo "telegram-desktop &" >> $HOME/.dwm/autostart.sh
+echo "st &" >> $HOME/.dwm/autostart.sh
+echo "DISPLAY=:0 xhost +local:" >> $HOME/.dwm/autostart.sh # give permissions to display
+chmod +x $HOME/.dwm/autostart.sh
diff --git a/set_brightness.sh b/set_brightness.sh
new file mode 100755
index 0000000..15a9646
--- /dev/null
+++ b/set_brightness.sh
@@ -0,0 +1,23 @@
+#!/bin/bash
+
+H=$(date +%k)
+
+if   (( $H >=  0 && $H <=  7 )); then
+    /usr/bin/xrandr --output eDP --brightness .2
+    sudo /usr/bin/brightnessctl --device='asus::kbd_backlight' set 3
+elif (( $H >  7 && $H <= 10 )); then
+    /usr/bin/xrandr --output eDP --brightness .5 
+    sudo /usr/bin/brightnessctl --device='asus::kbd_backlight' set 1
+elif (( $H > 10 && $H <= 19 )); then
+    /usr/bin/xrandr --output eDP --brightness .7 
+    sudo /usr/bin/brightnessctl --device='asus::kbd_backlight' set 0
+elif (( $H > 19 && $H <= 22 )); then
+    /usr/bin/xrandr --output eDP --brightness .5 
+    sudo /usr/bin/brightnessctl --device='asus::kbd_backlight' set 1
+elif (( $H > 22 && $H <= 23 )); then
+    /usr/bin/xrandr --output eDP --brightness .3 
+    sudo /usr/bin/brightnessctl --device='asus::kbd_backlight' set 2
+else
+    echo "Error"
+fi
+
diff --git a/update_gui.sh b/update_gui.sh
new file mode 100755
index 0000000..46d7387
--- /dev/null
+++ b/update_gui.sh
@@ -0,0 +1,9 @@
+#!/bin/bash
+export DISPLAY=:0
+set_brightness.sh  # set monitor brightness
+battery_capacity=$(cat /sys/class/power_supply/BAT0/capacity)
+MEM=$(free -h --kilo | awk '/^Mem:/ {print $3 "/" $2}')
+CPU=$(top -bn1 | grep "Cpu(s)" | sed "s/.*, *\([0-9.]*\)%* id.*/\1/" | awk '{print 100 - $1}' )
+DISK=$(df -Ph | grep "/dev/mapper/ubuntu--vg-ubuntu--lv" | awk {'print $5'})
+
+/usr/bin/xsetroot -name "$battery_capacity% `date +"%a %d.%m %H:%M"`; $MEM  $CPU%  $DISK"  # set systray