copied archbaseos-guided-install.sh from The_miro/Dotfiles.git for base OS installation
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#!/usr/bin/env bash
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set -euo pipefail
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############################################
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# Helper Functions
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############################################
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confirm() {
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echo "WARNING: This will ERASE ALL DATA on $1"
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read -rp "Type YES to continue: " ans
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[[ $ans == "YES" ]]
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}
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ask() {
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local prompt=$1
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local var
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read -rp "$prompt: " var
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echo "$var"
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}
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pause() {
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read -rp "Press ENTER to continue..."
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}
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############################################
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# Begin
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############################################
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echo "== Arch Linux FIDO2-Ready Installer =="
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lsblk
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DRIVE=$(ask "Enter install drive (e.g., /dev/sda)")
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confirm "$DRIVE" || exit 1
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# Required packages
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pacman -Syd --noconfirm parted cryptsetup libfido2 pam-u2f systemd-ukify
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############################################
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# Partitioning
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############################################
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RAM_GB=$(free --giga | awk '/Mem/ {print $2}')
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DISK_GB=$(lsblk -dn -o SIZE -b "$DRIVE" | awk '{print int($1/1024/1024/1024)}')
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EFI_SIZE=5
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SWAP_SIZE=$RAM_GB
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ROOT_SIZE=$((DISK_GB - SWAP_SIZE - EFI_SIZE - 1))
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if (( ROOT_SIZE < 8 )); then
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echo "ERROR: Disk too small for layout."
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exit 1
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fi
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echo "EFI=${EFI_SIZE}G, Root=${ROOT_SIZE}G, Swap=${SWAP_SIZE}G"
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parted -s "$DRIVE" mklabel gpt \
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mkpart EFI fat32 1MiB "${EFI_SIZE}GiB" \
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set 1 esp on \
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mkpart ROOT "${EFI_SIZE}GiB" "$((EFI_SIZE + ROOT_SIZE))GiB" \
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mkpart SWAP "$((EFI_SIZE + ROOT_SIZE))GiB" 100%
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EFI_PART="${DRIVE}1"
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ROOT_PART="${DRIVE}2"
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SWAP_PART="${DRIVE}3"
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mkfs.fat -F32 "$EFI_PART"
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mkswap "$SWAP_PART"
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swapon "$SWAP_PART"
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############################################
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# Encryption
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############################################
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echo
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read -rp "Enable FIDO2 for unlocking root? (YES/NO): " ENABLE_FIDO_ROOT
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echo "Formatting LUKS2 root..."
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cryptsetup luksFormat "$ROOT_PART" --type luks2
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cryptsetup open "$ROOT_PART" cryptroot
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if [[ $ENABLE_FIDO_ROOT == "YES" ]]; then
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echo "Enroll FIDO2 key for LUKS2"
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pause
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systemd-cryptenroll "$ROOT_PART" --fido2-device=auto --fido2-with-client-pin=no
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fi
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# Add fallback password
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echo "Adding fallback LUKS password (recommended)"
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cryptsetup luksAddKey "$ROOT_PART"
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############################################
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# Filesystem
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############################################
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mkfs.btrfs /dev/mapper/cryptroot
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mount /dev/mapper/cryptroot /mnt
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btrfs subvolume create /mnt/@
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btrfs subvolume create /mnt/@home
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umount /mnt
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mount -o subvol=@ /dev/mapper/cryptroot /mnt
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mkdir -p /mnt/home
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mount -o subvol=@home /dev/mapper/cryptroot /mnt/home
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mkdir -p /mnt/boot
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mount "$EFI_PART" /mnt/boot
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############################################
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# Base System Install
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############################################
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GPU_INFO=$(lspci | grep -E "VGA|3D")
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GPU_PKGS=""
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if echo "$GPU_INFO" | grep -qi nvidia; then
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#GPU_PKGS="nvidia nvidia-utils"
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GPU_PKGS="nvidia-open"
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elif echo "$GPU_INFO" | grep -qi amd; then
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GPU_PKGS="xf86-video-amdgpu"
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elif echo "$GPU_INFO" | grep -qi intel; then
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GPU_PKGS="xf86-video-intel"
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fi
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KERNEL=$(ask "Kernel (linux, linux-lts, linux-zen)")
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HOSTNAME=$(ask "Hostname")
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USERNAME=$(ask "Username")
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read -rsp "Password for $USERNAME: " USERPASS; echo
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read -rp "Enable FIDO2 for user login? (YES/NO): " ENABLE_FIDO_USER
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pacstrap /mnt \
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base "$KERNEL" linux-firmware vim zsh git networkmanager grub efibootmgr \
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btrfs-progs cryptsetup libfido2 pam-u2f sudo "$GPU_PKGS"
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genfstab -U /mnt >> /mnt/etc/fstab
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############################################
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# CHROOT Configuration
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############################################
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ROOT_UUID=$(blkid -s UUID -o value "$ROOT_PART")
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arch-chroot /mnt /usr/bin/env \
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HOSTNAME="$HOSTNAME" \
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USERNAME="$USERNAME" \
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USERPASS="$USERPASS" \
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ENABLE_FIDO_ROOT="$ENABLE_FIDO_ROOT" \
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ENABLE_FIDO_USER="$ENABLE_FIDO_USER" \
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ROOT_UUID="$ROOT_UUID" \
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/bin/bash <<'EOF'
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set -euo pipefail
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echo "en_US.UTF-8 UTF-8" > /etc/locale.gen
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locale-gen
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echo "LANG=en_US.UTF-8" > /etc/locale.conf
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ln -sf /usr/share/zoneinfo/Europe/Vienna /etc/localtime
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hwclock --systohc
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echo "$HOSTNAME" > /etc/hostname
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systemctl enable NetworkManager
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useradd -m -G wheel -s /bin/zsh "$USERNAME"
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echo "$USERNAME:$USERPASS" | chpasswd
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echo "%wheel ALL=(ALL) ALL" >> /etc/sudoers
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# Initramfs + GRUB for FIDO2
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if [[ "$ENABLE_FIDO_ROOT" == "YES" ]]; then
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sed -i 's/^HOOKS=.*/HOOKS=(base systemd autodetect modconf block sd-encrypt filesystems keyboard fsck)/' /etc/mkinitcpio.conf
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else
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sed -i 's/^HOOKS=.*/HOOKS=(base udev autodetect modconf block encrypt filesystems keyboard fsck)/' /etc/mkinitcpio.conf
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fi
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mkinitcpio -P
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if [[ "$ENABLE_FIDO_ROOT" == "YES" ]]; then
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GRUB_CMDLINE="rd.luks.name=$ROOT_UUID=cryptroot rd.luks.options=fido2-device=auto root=/dev/mapper/cryptroot"
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else
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GRUB_CMDLINE="cryptdevice=UUID=$ROOT_UUID:cryptroot root=/dev/mapper/cryptroot"
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fi
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sed -i "s|^GRUB_CMDLINE_LINUX=.*|GRUB_CMDLINE_LINUX=\"$GRUB_CMDLINE\"|" /etc/default/grub
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grub-install --target=x86_64-efi --efi-directory=/boot --bootloader-id=GRUB
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grub-mkconfig -o /boot/grub/grub.cfg
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# User login FIDO2
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if [[ "$ENABLE_FIDO_USER" == "YES" ]]; then
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echo "Enrolling FIDO2 for user login"
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mkdir -p /home/$USERNAME/.config/Yubico
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chown $USERNAME:$USERNAME /home/$USERNAME/.config/Yubico
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sudo -u "$USERNAME" bash -c "pamu2fcfg >> /home/$USERNAME/.config/Yubico/u2f_keys"
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echo "auth required pam_u2f.so" >> /etc/pam.d/system-auth
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fi
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EOF
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echo "Installation complete!"
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echo "Run: umount -R /mnt && reboot"
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