calamares-settings-ubuntu/ubuntuunity/oem/calamares-launch-oem

#!/bin/bash
#
# Enables OEM installaiton mode in Calamares.

if [ -e '/etc/calamares/OEM_MODE_ACTIVATED' ]; then
  export BROWSER='sudo -H -u ubuntu-unity firefox'
  QT_STYLE_OVERRIDE=kvantum calamares -D8;
  exit;
fi

msg="$(cat <<EOL
You are about to install the OS in OEM mode. This will prepare the system for distribution to an end user, providing them with an account setup wizard. If you do not need this capability, please cancel and use the normal install method.

Are you sure you want to continue?
EOL
)";

if zenity --question --text="${msg}"; then
  # Tweak branding to make it clear that OEM installation mode is active
  cp /etc/calamares/branding/ubuntuunity/welcome-oem.png /etc/calamares/branding/ubuntuunity/welcome.png;

  # Don't remove Calamares from the installed system.
  sed -i '/- calamares$/d' /etc/calamares/modules/packages.conf;

  # Enable oemid module, backslashes are needed for proper indentation
  sed -i "/- welcome$/a \ \ - oemid" /etc/calamares/settings.conf;

  # Enable OEM prep module
  sed -i "/- packages$/a \ \ - shellprocess@oemprep" /etc/calamares/settings.conf;

  # Force the user of an OEM configuration user
  cp /etc/calamares/modules/users.conf.oem /etc/calamares/modules/users.conf;

  # Drop a file so that it can be seen that OEM installation mode is already
  # active
  touch /etc/calamares/OEM_MODE_ACTIVATED;

  # Launch Calamares
  export BROWSER='sudo -H -u ubuntu-unity firefox'
  QT_STYLE_OVERRIDE=kvantum calamares -D8;
fi