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#!/bin/bash
# Copyright 2025 Logan Fick
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at: https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
# Stop the script if any command exits non-zero.
set -e
# A wrapper for "echo" which prepends a prefix so output from the script can be easily differentiated from command output.
print() {
echo "[LogalDeveloper's Arch Linux Installer] $1"
}
## Arch Linux Installation Guide Step 1.7 - Connect to the internet
# Checks DNS and internet connectivity by making an HTTPS request. If it fails, assume no internet connection.
print "Checking internet connectivity..."
internet_check_url="https://logal.dev/"
if curl -s --head $internet_check_url | grep "200" >/dev/null; then
print "Internet connection is available!"
else
print "Internet connection appears not available (HTTP request to "$internet_check_url" failed). Please check network settings and re-run this script."
exit 1
fi
## Arch Linux Installation Guide Step 1.8 - Update the system clock
# Checks systemd-timesyncd to verify the system time is synchronized.
print "Checking system time synchronization state..."
if timedatectl status | grep -q "System clock synchronized: yes"; then
print "System time is synchronized!"
else
print "The system time is not synchronized. Please check systemd-timesyncd and re-run this script."
exit 1
fi
print "Updating mirrorlist..."
reflector --save /etc/pacman.d/mirrorlist --protocol https --country US --sort score
# Provide the tip from the Arch Linux Installation Guide regarding optimal logical sector sizes.
print "Please check the following items before proceding:"
print " - If you intend to use an Advanced Format (e.g. NVMe) drive, verify the optimal sector size is selected. (https://wiki.archlinux.org/title/Advanced_Format)"
print "If you need to go back, press Ctrl+C. Otherwise, press enter to continue."
read
## Arch Linux Installation Guide Step 1.9 - Partition the disks
# Provide the user a listing of the disks and ask them which they'd like to install to.
fdisk -l
print "Disk information from 'fdisk -l' is provided above. Please enter the path to the disk you would like to install Arch Linux to (e.g. /dev/sda)."
read install_disk
print "Please confirm your selection by entering the same path again."
read disk_confirm
if [ "$install_disk" != "$disk_confirm" ]; then
print "The same disk was not entered both times. Exiting..."
exit 1
fi
# Triple check the user wants to continue installing to install disk.
print "Last warning: Are you sure you want to install Arch Linux to '$install_disk'? All data on this disk will be wiped. Enter 'I am sure' exactly to confirm, or anything else to cancel."
read final_confirmation
if [ "$final_confirmation" != "I am sure" ]; then
print "Confirmation failed. Exiting..."
exit 1
fi
# Wipe all previous file systems from the install disk.
print "Wiping existing partition table from $install_disk..."
wipefs -a $install_disk
# Partition install disk.
print "Partitioning $install_disk..."
sgdisk --new 1:0:1G $install_disk # New GPT table, make a new partition 1G in size at the start
sgdisk --typecode 1:ef00 $install_disk # Mark it as EFI System Partition
sgdisk --new 2:0:0 $install_disk # Add a second partition taking up the rest of the remaining space.
sgdisk --type-code 2:8309 $install_disk # Mark it as Linux LUKS
# /dev/nvme has an extra charater to identify partition number.
if [[ $install_disk == /dev/nvme* ]]; then
# Use "p" in the partition paths for NVMe drives.
partition_prefix="${install_disk}p"
else
# Use just numbers for other drives.
partition_prefix="${install_disk}"
fi
efi_partition=${partition_prefix}1
root_partition=${partition_prefix}2
## Arch Linux Installation Guide Step 1.10 - Format the partitions
print "Formatting ${efi_partition} as FAT32..."
mkfs.fat -F 32 ${efi_partition}
print "Setting up encryption on ${root_partition}..."
print "Please follow the cryptsetup prompts to enter your desired encryption passphrase."
cryptsetup luksFormat --type luks2 --cipher aes-xts-plain64 --hash sha512 --key-size 512 --pbkdf argon2id --pbkdf-force-iterations 8 --pbkdf-memory 4194304 --pbkdf-parallel 4 --use-urandom ${root_partition}
print "Unlocking ${root_partition}..."
print "Please enter the passphrase you just used to unlock the newly encrypted partition."
cryptsetup open ${root_partition} cryptroot
luks_uuid=$(cryptsetup luksDump ${root_partition} | grep 'UUID:' | awk '{print $2}')
print "Formatting /dev/mapper/cryptroot..."
mkfs.btrfs --csum xxhash /dev/mapper/cryptroot
## Arch Linux Installation Guide Step 1.11 - Mount the file systems
print "Mounting partitions..."
mount -o noatime /dev/mapper/cryptroot /mnt
mount --mkdir ${efi_partition} /mnt/boot
## Arch Linux Installation Guide Step 2.2 - Install essential packages
print "Installing Arch Linux base..."
pacstrap -K /mnt base \
linux \
linux-firmware \
bash-completion \
btrfs-progs \
htop \
nano \
reflector \
sudo \
ufw
print "Installing CPU microcode..."
cpu_vendor=$(grep -m 1 'vendor_id' /proc/cpuinfo | awk '{print $3}')
if [[ "${cpu_vendor}" == "GenuineIntel" ]]; then
arch-chroot /mnt pacman --noconfirm -S intel-ucode
elif [[ "{$cpu_vendor}" == "AuthenticAMD" ]]; then
arch-chroot /mnt pacman --noconfirm -S amd-ucode
else
echo "Unknown CPU vendor: {$cpu_vendor}. Please install microcode manually after installation, if available."
fi
## Arch Linux Installation Guide Step 3.1 - Fstab
print "Generating /etc/fstab..."
genfstab -U /mnt >>/mnt/etc/fstab
## Arch Linux Installation Guide Step 3.4 - Localization
print "Setting up locale..."
arch-chroot /mnt sed -i '/^#.*en_US.UTF-8 UTF-8/s/^#//' /etc/locale.gen
arch-chroot /mnt locale-gen
arch-chroot /mnt systemd-firstboot --locale=en_US.UTF-8
## Arch Linux Installation Guide Step 3.3 - Time
## Arch Linux Installation Guide Step 3.4 - Localization
## Arch Linux Installation Guide Step 3.5 - Network configuration
print "Entering first time setup..."
print "Your keymap is probably 'us' and the time zone is probably 'America/New_York'."
arch-chroot /mnt systemd-firstboot --prompt
## Arch Linux Installation Guide Step 3.6 - Initramfs
default_mkinitcpio_line="HOOKS=(base udev autodetect microcode modconf kms keyboard keymap consolefont block filesystems fsck)"
new_mkinitcpio_line="HOOKS=(systemd autodetect microcode modconf kms keyboard sd-vconsole block sd-encrypt filesystems fsck)"
arch-chroot /mnt sed -i "s|^${default_mkinitcpio_line}|${new_mkinitcpio_line}|" /etc/mkinitcpio.conf
arch-chroot /mnt mkinitcpio -P
## Arch Linux Installation Guide Step 3.8 - Boot loader
print "Installing bootloader..."
arch-chroot /mnt bootctl install
arch-chroot /mnt sh -c "cat > /boot/loader/entries/arch.conf" <<EOF
title Arch Linux
linux /vmlinuz-linux
initrd /initramfs-linux.img
options rd.luks.name=${luks_uuid}=cryptroot root=/dev/mapper/cryptroot rootfstype=btrfs
EOF
arch-chroot /mnt sh -c "cat > /boot/loader/entries/arch-fallback.conf" <<EOF
title Arch Linux (fallback)
linux /vmlinuz-linux
initrd /initramfs-linux-fallback.img
options rd.luks.name=${luks_uuid}=cryptroot root=/dev/mapper/cryptroot rootfstype=btrfs
EOF
arch-chroot /mnt sed -i '/^#timeout 3/s/^#//' /boot/loader/loader.conf
print "Enabling sudo access for wheel group..."
arch-chroot /mnt sed -i "s|^# %wheel ALL=(ALL:ALL) ALL|%wheel ALL=(ALL:ALL) ALL|" /etc/sudoers
print "Disabling root account..."
arch-chroot /mnt passwd -l root
print "Configuring reflector..."
arch-chroot /mnt sh -c "cat > /etc/xdg/reflector/reflector.conf" <<EOF
# Reflector configuration file for the systemd service.
#
# Empty lines and lines beginning with "#" are ignored. All other lines should
# contain valid reflector command-line arguments. The lines are parsed with
# Python's shlex modules so standard shell syntax should work. All arguments are
# collected into a single argument list.
#
# See "reflector --help" for details.
--save /etc/pacman.d/mirrorlist
--protocol https
--country US
--sort score
EOF
arch-chroot /mnt systemctl enable reflector.timer
print "Please enter the username you'd like to use for your account"
read username
arch-chroot /mnt useradd -m -G wheel $username
print "Please set the password for your new account."
arch-chroot /mnt passwd $username
print "Setting up systemd-resolved..."
arch-chroot /mnt sed -i "s|^#MulticastDNS=yes|MulticastDNS=no|" /etc/systemd/resolved.conf
arch-chroot /mnt sed -i "s|^#LLMNR=yes|LLMNR=no|" /etc/systemd/resolved.conf
arch-chroot /mnt systemctl enable systemd-resolved.service
print "Setting up systemd-networkd..."
arch-chroot /mnt sh -c "cat > /etc/systemd/network/00-default.network" <<EOF
[Match]
Name=*
[Link]
RequiredForOnline=routable
[Network]
DHCP=yes
IPv6AcceptRA=yes
EOF
arch-chroot /mnt systemctl enable systemd-networkd.service
print "Would you like to install iwd for Wi-Fi support? Enter 'y' exactly for yes, otherwise anything else to skip."
read install_iwd
if [ "$install_iwd" == "y" ]; then
print "Installing iwd..."
arch-chroot /mnt pacman --noconfirm -S iwd
arch-chroot /mnt systemctl enable iwd.service
fi
print "Enabling systemd-timesyncd..."
arch-chroot /mnt systemctl enable systemd-timesyncd.service
install_base_xfce() {
arch-chroot /mnt pacman --noconfirm -S lightdm \
lightdm-gtk-greeter \
lightdm-gtk-greeter-settings \
thunar \
thunar-archive-plugin \
gvfs \
xfce4-panel \
xfce4-power-manager \
xfce4-session \
xfce4-settings \
xfce4-terminal \
xfdesktop \
xfwm4 \
xfce4-battery-plugin \
xfce4-datetime-plugin \
xfce4-notifyd \
xfce4-whiskermenu-plugin \
xfce4-screensaver \
xfce4-screenshooter \
mousepad \
noto-fonts \
noto-fonts-cjk \
noto-fonts-emoji \
noto-fonts-extra \
pipewire \
pipewire-alsa \
pipewire-pulse \
pipewire-jack \
wireplumber \
pavucontrol \
xfce4-pulseaudio-plugin \
ristretto \
xarchiver \
xreader
arch-chroot /mnt systemctl enable lightdm.service
}
print "Base install complete. Select profile to install for this system:"
print " 1 - Minimal"
print " Base Arch Linux system, no additional packages."
print " 2 - Server"
print " Adds Restic, Docker, and Docker Compose."
print " 3 - Minimal Desktop"
print " XFCE 4 with no additional applications."
print " 4 - Basic Desktop"
print " XFCE 4 with Firefox as only included desktop application."
print " 5 - Full Desktop"
print " XFCE 4 with a suite of recommended desktop applications."
read profile
case $profile in
"1")
# Do nothing...
;;
"2")
arch-chroot /mnt pacman --noconfirm -S restic \
docker \
docker-compose
arch-chroot /mnt systemctl enable docker.service
;;
"3")
install_base_xfce
;;
"4")
install_base_xfce
arch-chroot /mnt pacman --noconfirm -S firefox \
firefox-ublock-origin
;;
"5")
install_base_xfce
arch-chroot /mnt pacman --noconfirm -S audacious \
audacity \
code \
element-desktop \
ffmpeg \
firefox \
firefox-ublock-origin \
gimp \
git \
gnucash \
hunspell-en_us \
keepassxc \
libreoffice-fresh \
mumble \
obs-studio \
syncthing \
vlc \
wireshark-qt
;;
*)
echo -n "Unknown profile, defaulting to minimal install."
;;
esac
print "Installation complete!"