install_firefox() {
      source /etc/os-release
      printf "Package: snapd
  Pin: release a=\*
  Pin-Priority: -10" | sudo tee -a /etc/apt/preferences.d/nosnap.pref
      sudo add-apt-repository -y ppa:mozillateam/ppa
      sudo apt update -y
      sudo apt install -y -t 'o=LP-PPA-mozillateam' firefox
      printf "%s" "Unattended-Upgrade::Allowed-Origins:: \"LP-PPA-mozillateam:${UBUNTU_CODENAME}\";" | sudo tee /etc/apt/apt.conf.d/51unattended-upgrades-firefox
      printf "Package: firefox\*
  Pin: release o=LP-PPA-mozillateam
  Pin-Priority: 501" | sudo tee /etc/apt/preferences.d/mozillateamppa
  }

  remove_snaps() {
      sudo snap remove --purge firefox
      sudo snap remove --purge snap-store
      sudo snap remove --purge gnome-3-38-2004
      sudo snap remove --purge gtk-common-themes
      sudo snap remove --purge snapd-desktop-integration
      sudo snap remove --purge bare
      sudo snap remove --purge core20
      sudo snap remove --purge snapd
      sudo apt remove --autoremove snapd -y
  
      cat <<EOF | sudo tee /etc/apt/preferences.d/nosnap.pref
  # To prevent repository packages from triggering the installation of Snap,
  # this file forbids snapd from being installed by APT.
  # For more information: https://linuxmint-user-guide.readthedocs.io/en/latest/snap.html
  
  Package: snapd
  Pin: release a=*
  Pin-Priority: -10
  EOF
      sudo umount /var/snap
  }