diff --git a/src/main.bash b/src/main.bash
index e987507..c3a5b69 100755
--- a/src/main.bash
+++ b/src/main.bash
@@ -19,11 +19,11 @@ PGKNAME='openssh-server'
 runVoid dpkg-query --status $PGKNAME
 if [ $? -ne 0 ] ; then
     set -e
-    pkexec apt install $PGKNAME
-    pkexec /opt/debian-bash/tools/append_or_replace "^#\?PermitRootLogin.*$" "PermitRootLogin no" /etc/ssh/sshd_config
-    pkexec /opt/debian-bash/tools/append_or_replace "^#\?PasswordAuthentication.*$" "PasswordAuthentication no" /etc/ssh/sshd_config
-    pkexec /opt/debian-bash/tools/append_or_replace "^#\?AllowUsers.*$" "AllowUsers $ALLOWED_USERS" /etc/ssh/sshd_config
-    pkexec systemctl restart sshd
+    sudo apt install $PGKNAME
+    sudo /opt/debian-bash/tools/append_or_replace "^#\?PermitRootLogin.*$" "PermitRootLogin no" /etc/ssh/sshd_config
+    sudo /opt/debian-bash/tools/append_or_replace "^#\?PasswordAuthentication.*$" "PasswordAuthentication no" /etc/ssh/sshd_config
+    sudo /opt/debian-bash/tools/append_or_replace "^#\?AllowUsers.*$" "AllowUsers $ALLOWED_USERS" /etc/ssh/sshd_config
+    sudo systemctl restart sshd
     set +e
 else
     echo "${PGKNAME} already installed!"
@@ -34,10 +34,10 @@ if [[ ! /usr/local/bin/firefox -ef /opt/firefox/firefox ]];then
     set -e
     cd /tmp
     wget `curl 'https://download.mozilla.org/?product=firefox-latest-ssl&os=linux64&lang=en-US' | cut -d '"' -f2` -O firefox-latest.tar.bz2
-    pkexec mkdir /opt/firefox -p
-    pkexec chown $USER /opt/firefox
+    sudo mkdir /opt/firefox -p
+    sudo chown $USER /opt/firefox
     tar -xjf firefox-latest.tar.bz2 -C /opt
-    cat <<EOF | pkexec tee -a /usr/share/applications/firefox-stable.desktop
+    cat <<EOF | sudo tee -a /usr/share/applications/firefox-stable.desktop
 [Desktop Entry]
 Name=Firefox Stable
 Comment=Web Browser
@@ -50,26 +50,59 @@ MimeType=text/html;text/xml;application/xhtml+xml;application/xml;application/vn
 StartupNotify=true
 StartupWMClass=Firefox
 EOF
-    pkexec ln -s /opt/firefox/firefox /usr/local/bin/firefox
-    pkexec update-alternatives --install /usr/bin/x-www-browser x-www-browser /opt/firefox/firefox 200 && sudo update-alternatives --set x-www-browser /opt/firefox/firefox 
-    pkexec apt remove firefox-esr
+    sudo ln -s /opt/firefox/firefox /usr/local/bin/firefox
+    sudo update-alternatives --install /usr/bin/x-www-browser x-www-browser /opt/firefox/firefox 200 && sudo update-alternatives --set x-www-browser /opt/firefox/firefox 
+    sudo apt remove firefox-esr
     set +e
 else
     echo "firefox latest already installed!"
 fi
 
 
+# ublock origin
 MOZILLA_GLOBAL_ADDONS_FOLDER="/usr/share/mozilla/extensions/{ec8030f7-c20a-464f-9b0e-13a3a9e97384}"
 UBLOCK_ADDON="uBlock0@raymondhill.net"
 if [[ ! -d "${MOZILLA_GLOBAL_ADDONS_FOLDER}/${UBLOCK_ADDON}" ]]; then
     UBLOCK_URL=$(curl -s https://addons.mozilla.org/en-US/firefox/addon/ublock-origin/ | grep -Poe "\"https://addons\.mozilla\.org/firefox/downloads/file.*?\"" | cut -d'"' -f2)
     wget ${UBLOCK_URL} -O /tmp/ublock_origin.xpi
-    mkdir -p ${MOZILLA_GLOBAL_ADDONS_FOLDER}/${UBLOCK_ADDON}
-    pkexec unzip /tmp/ublock_origin.xpi -d ${MOZILLA_GLOBAL_ADDONS_FOLDER}/${UBLOCK_ADDON}/
+    sudo mkdir -p ${MOZILLA_GLOBAL_ADDONS_FOLDER}/${UBLOCK_ADDON}
+    sudo unzip /tmp/ublock_origin.xpi -d ${MOZILLA_GLOBAL_ADDONS_FOLDER}/${UBLOCK_ADDON}/
 else
     echo "ublock origin already installed!"
 fi
 
 
 
+## gnome settings
+gsettings set org.gnome.shell favorite-apps "['org.gnome.Nautilus.desktop','firefox-stable.desktop','org.gnome.Software.desktop']"
+gsettings set org.gnome.settings-daemon.peripherals.keyboard remember-numlock-state true
+gsettings set org.gnome.desktop.interface clock-show-date true
+gsettings set org.gnome.nautilus.preferences click-policy 'single'
+gsettings set org.gnome.shell.overrides dynamic-workspaces false
+gsettings set org.gnome.desktop.wm.preferences num-workspaces 1
+
+## gnome extension system-monitor
+runVoid dpkg-query --status gnome-shell-extension-system-monitor
+if [ $? -ne 0 ] ; then
+    set -e
+    sudo apt install gnome-shell-extension-system-monitor
+    sudo cp /usr/share/gnome-shell/extensions/system-monitor@paradoxxx.zero.gmail.com/schemas/*.gschema.xml /usr/share/glib-2.0/schemas/
+    sudo glib-compile-schemas /usr/share/glib-2.0/schemas/
+    gnome-shell-extension-tool -e system-monitor@paradoxxx.zero.gmail.com
+    gnome-shell-extension-tool -r system-monitor@paradoxxx.zero.gmail.com
+
+    gsettings set org.gnome.shell.extensions.system-monitor show-tooltip true
+    gsettings set org.gnome.shell.extensions.system-monitor cpu-show-text false
+    gsettings set org.gnome.shell.extensions.system-monitor cpu-graph-width 60
+    gsettings set org.gnome.shell.extensions.system-monitor memory-display false
+    gsettings set org.gnome.shell.extensions.system-monitor net-display true
+    gsettings set org.gnome.shell.extensions.system-monitor net-style digit
+    gsettings set org.gnome.shell.extensions.system-monitor icon-display false
+    gsettings set org.gnome.shell.extensions.system-monitor disk-display false
+    
+    set +e
+else
+   echo "gnome-shell-extension-system-monitor installed!" 
+fi
+