211 lines
9.4 KiB
Markdown
211 lines
9.4 KiB
Markdown
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---
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title: GRUB2 Theme / Configuration
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description: Configures GRUB2 to use a custom theme
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sidebar_label: 64 GRUB2 Theme / Configuration
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slug: /scripts/after/run_onchange_after_64-grub-settings.sh.tmpl
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githubLocation: https://github.com/megabyte-labs/install.doctor/blob/master/home/.chezmoiscripts/universal/run_onchange_after_64-grub-settings.sh.tmpl
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scriptLocation: https://github.com/megabyte-labs/install.doctor/raw/master/home/.chezmoiscripts/universal/run_onchange_after_64-grub-settings.sh.tmpl
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repoLocation: home/.chezmoiscripts/universal/run_onchange_after_64-grub-settings.sh.tmpl
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---
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# GRUB2 Theme / Configuration
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Configures GRUB2 to use a custom theme
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## Overview
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This script configures GRUB2 with a custom theme.
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## Source Code
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```
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{{- if (eq .host.distro.family "linux") -}}
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#!/usr/bin/env bash
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# @file GRUB2 Theme / Configuration
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# @brief Configures GRUB2 to use a custom theme
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# @description
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# This script configures GRUB2 with a custom theme.
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{{ includeTemplate "universal/profile" }}
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{{ includeTemplate "universal/logg" }}
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### Fix Qubes issue
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if command -v qubesctl > /dev/null && [ -f /boot/grub2/grubenv ] && [ -d /boot/efi/EFI/qubes ]; then
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sudo cp -f /boot/grub2/grubenv /boot/efi/EFI/qubes/grubenv
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logg success 'Copied /boot/grub2/grubenv to /boot/efi/EFI/qubes/grubenv'
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fi
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### Ensure /boot/grub2/themes is directory
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if [ ! -d /boot/grub2/themes ]; then
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sudo mkdir -p /boot/grub2/themes
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logg success 'Created /boot/grub2/themes'
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fi
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### Copy GRUB theme to /boot/grub2/themes
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if [ -d /usr/local/share/grub/themes ]; then
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sudo cp -rf /usr/local/share/grub/themes /boot/grub2/
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logg success 'Copied GRUB themes in /usr/local/share/grub/themes to /boot/grub2/themes'
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else
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logg warn '/usr/local/share/grub/themes is missing'
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fi
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### Set default GRUB screen resolution variables
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SCREEN_RATIO_ULTRAWIDE="2100"
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GRUB_RESOLUTION_TYPE="1080p"
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### Determine screen size ratio (used for picking GRUB2 theme resolution)
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if command -v xrandr > /dev/null && command -v uniq > /dev/null; then
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SCREEN_WIDTH="$(xrandr --current | grep '*' | uniq | awk '{print $1}' | cut -d 'x' -f1)"
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SCREEN_HEIGHT="$(xrandr --current | grep '*' | uniq | awk '{print $1}' | cut -d 'x' -f2)"
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SCREEN_RATIO="$(awk -v height="$SCREEN_HEIGHT" -v width="$SCREEN_WIDTH" 'BEGIN { print ((height / width) * 1000) }')"
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SCREEN_RATIO="${SCREEN_RATIO%.*}"
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logg success "Screen detected as $SCREEN_WIDTH x $SCREEN_HEIGHT (ratio of $SCREEN_RATIO)"
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if (( $(echo "$SCREEN_RATIO $SCREEN_RATIO_ULTRAWIDE" | awk '{print ($1 > $2)}') )); then
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GRUB_RESOLUTION_TYPE="ultrawide"
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logg info 'GRUB resolution registered as ultrawide'
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fi
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else
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logg warn 'Missing either xrandr or uniq (required for calculating screen size ratio)'
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fi
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### Optimize the GRUB resolution
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if [ -f /etc/default/grub ]; then
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### GRUB_GFXMODE
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logg info 'Setting GRUB_GFXMODE=auto in /etc/default/grub'
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if cat /etc/default/grub | grep GRUB_GFX_MODE > /dev/null; then
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sudo sed -i 's/.*GRUB_GFXMODE.*/GRUB_GFXMODE=auto/' /etc/default/grub
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else
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echo "GRUB_GFXMODE=auto" | sudo tee -a /etc/default/grub > /dev/null
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fi
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### GRUB_GFXPAYLOAD_LINUX
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logg info 'Setting GRUB_GFXPAYLOAD_LINUX=keep in /etc/default/grub'
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if cat /etc/default/grub | grep GRUB_GFXPAYLOAD_LINUX > /dev/null; then
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sudo sed -i 's/.*GRUB_GFXPAYLOAD_LINUX.*/GRUB_GFXPAYLOAD_LINUX="keep"/' /etc/default/grub
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else
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echo 'GRUB_GFXPAYLOAD_LINUX="keep"' | sudo tee -a /etc/default/grub > /dev/null
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fi
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### GRUB_THEME
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logg info 'Setting GRUB_THEME={{ .theme }} in /etc/default/grub'
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if cat /etc/default/grub | grep GRUB_THEME > /dev/null; then
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sudo sed -i 's/.*GRUB_THEME.*/GRUB_THEME="{{ .theme }}-'"$GRUB_RESOLUTION_TYPE"'"/' /etc/default/grub
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else
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echo 'GRUB_THEME="{{ .theme }}-'"$GRUB_RESOLUTION_TYPE"'"' | sudo tee -a /etc/default/grub > /dev/null
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fi
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### GRUB_BACKGROUND
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# Removed since the background should be flat black which is configurable
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# Leaving this code here in case we need to add a flat black image background for some reason
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# logg info 'Setting GRUB_BACKGROUND=/usr/local/share/grub/{{ .theme }}-blue.png in /etc/default/grub'
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# if cat /etc/default/grub | grep GRUB_BACKGROUND > /dev/null; then
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# sudo sed -i 's/.*GRUB_BACKGROUND.*/GRUB_BACKGROUND="\/usr\/local\/share\/grub\/{{ .theme }}-blue.png"/' /etc/default/grub
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# else
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# echo 'GRUB_BACKGROUND="/usr/local/share/grub/{{ .theme }}-blue.png"' | sudo tee -a /etc/default/grub > /dev/null
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# fi
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### GRUB_TIMEOUT
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logg info 'Setting GRUB_TIMEOUT={{ .grub.timeout }} in /etc/default/grub'
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if cat /etc/default/grub | grep GRUB_TIMEOUT > /dev/null; then
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sudo sed -i 's/.*GRUB_TIMEOUT.*/GRUB_TIMEOUT="{{ .grub.timeout }}"/' /etc/default/grub
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else
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echo 'GRUB_TIMEOUT="{{ .grub.timeout }}"' | sudo tee -a /etc/default/grub > /dev/null
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fi
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### GRUB_FORCE_HIDDEN_MENU
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logg info 'Setting GRUB_FORCE_HIDDEN_MENU={{ .grub.shiftToSee }} in /etc/default/grub'
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sudo sed -i '/GRUB_FORCE_HIDDEN_MENU/d' /etc/default/grub
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echo "GRUB_FORCE_HIDDEN_MENU={{ .grub.shiftToSee }}" | sudo tee -a /etc/default/grub > /dev/null
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### Remove duplicate lines in /etc/default/grub
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logg info 'Ensuring there are no duplicate entries in /etc/default/grub'
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cat /etc/default/grub | uniq | sudo tee /etc/default/grub > /dev/null
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else
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logg warn '/etc/default/grub is missing'
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fi
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### Determine platform-specific icon to use
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if command -v qubesctl > /dev/null; then
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GRUB_ICON='qubes'
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elif [ -f "/usr/local/share/grub/themes/{{ .theme }}-$GRUB_RESOLUTION_TYPE/icons/{{ .host.distro.id }}.png" ]; then
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GRUB_ICON='{{ .host.distro.id }}'
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elif [ -f "/usr/local/share/grub/themes/{{ .theme }}-$GRUB_RESOLUTION_TYPE/icons/{{ .host.distro.family }}.png" ]; then
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GRUB_ICON='{{ .host.distro.family }}'
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else
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GRUB_ICON='linux'
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fi
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### Copy icon to GRUB2 theme folder
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# Check looks in /usr/local/share/grub because on some systems the /boot folder is behind permissions for non-root users
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if [ -f "/usr/local/share/grub/themes/{{ .theme }}-$GRUB_RESOLUTION_TYPE/icons/$GRUB_ICON.png" ]; then
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sudo cp -f /boot/grub2/themes/{{ .theme }}-$GRUB_RESOLUTION_TYPE/icons/$GRUB_ICON.png /boot/grub2/themes/{{ .theme }}-$GRUB_RESOLUTION_TYPE/icon.png
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logg success 'Copied platform-specific icon to GRUB2 theme folder'
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else
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logg warn "/boot/grub2/themes/{{ .theme }}-$GRUB_RESOLUTION_TYPE/icons/$GRUB_ICON.png is missing"
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fi
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### Hide unnecessary Boot messages and Bliking cursor
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GRUB_DEFAULT_CMDLINE=$(grep 'GRUB_CMDLINE_LINUX_DEFAULT' /etc/default/grub)
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if [[ -n $GRUB_DEFAULT_CMDLINE ]]; then
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KERNEL_PARAMS_QUIET=$(echo "$GRUB_DEFAULT_CMDLINE" | grep 'quiet')
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logg info 'Updating GRUB_CMDLINE_LINUX_DEFAULT to hide log messages'
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if [[ -z $KERNEL_PARAMS_QUIET ]]; then
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sudo sed -i 's/^GRUB_CMDLINE_LINUX_DEFAULT="/GRUB_CMDLINE_LINUX_DEFAULT="quiet loglevel=3 systemd.show_status=auto rd.udev.log_level=3 vt.global_cursor_default=0 /' /etc/default/grub
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else
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NEW_KERNEL_PARAMS=$(echo $KERNEL_PARAMS_QUIET | sed -e "s/quiet/quiet loglevel=3 systemd.show_status=auto rd.udev.log_level=3 vt.global_cursor_default=0/")
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sudo sed -i "s/^GRUB_CMDLINE_LINUX_DEFAULT.*/${NEW_KERNEL_PARAMS}/" /etc/default/grub
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fi
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else
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logg info 'GRUB_CMDLINE_LINUX_DEFAULT was not present, adding one with parameters to hide log messages'
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echo 'GRUB_CMDLINE_LINUX_DEFAULT="quiet loglevel=3 systemd.show_status=auto rd.udev.log_level=3 vt.global_cursor_default=0"' | sudo tee -a /etc/default/grub > /dev/null
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fi
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### Ensure grub2-mkconfig is available
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if ! command -v grub2-mkconfig > /dev/null; then
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if command -v grub-mkconfig > /dev/null; then
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sudo ln -s "$(which grub-mkconfig)" /usr/bin/grub2-mkconfig
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elif sudo which grub-mkconfig > /dev/null; then
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sudo ln -s "$(sudo which grub-mkconfig)" /usr/bin/grub2-mkconfig
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else
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logg warn 'Neither grub2-mkconfig or grub-mkconfig are available'
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fi
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fi
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### Apply GRUB2 theme
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# Set export DEBUG_MODE=true to bypass GRUB2 / Plymouth application
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if [ "$DEBUG_MODE" != 'true' ]; then
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if command -v grub2-mkconfig > /dev/null; then
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if [ -d /sys/firmware/efi ]; then
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logg info 'Assuming system is UEFI-enabled since /sys/firmware/efi is present'
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if [ -f /boot/efi/EFI/qubes/grub.cfg ]; then
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logg info 'Running sudo grub2-mkconfig -o /boot/efi/EFI/qubes/grub.cfg'
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sudo grub2-mkconfig -o /boot/efi/EFI/qubes/grub.cfg
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logg success 'Applied GRUB2 theme'
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elif [ -f /boot/efi/EFI/grub.cfg ]; then
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logg info 'Running sudo grub2-mkconfig -o /boot/efi/EFI/grub.cfg'
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sudo grub2-mkconfig -o /boot/efi/EFI/grub.cfg
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logg success 'Applied GRUB2 theme'
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else
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logg warn 'Unknown GRUB2 configuration - not applying GRUB2 theme'
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fi
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else
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logg info 'Assuming system is non-UEFI since /sys/firmware/efi is not present'
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logg info 'Running sudo grub2-mkconfig -o /boot/grub2/grub.cfg'
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sudo grub2-mkconfig -o /boot/grub2/grub.cfg
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logg success 'Applied GRUB2 theme'
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fi
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elif [ -f /usr/sbin/update-grub ]; then
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logg info 'Running `sudo update-grub`'
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sudo update-grub
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else
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logg warn 'Unable to find appropriate GRUB mkconfig command'
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fi
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else
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logg info 'Skipping GRUB2 theme application because DEBUG_MODE is set to true'
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fi
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{{ end -}}
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```
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