#!/usr/bin/env -S bash -e # Cleaning the TTY. clear # Cosmetics (colours for text). BOLD='\e[1m' BRED='\e[91m' BBLUE='\e[34m' BGREEN='\e[92m' BYELLOW='\e[93m' RESET='\e[0m' # Pretty print (function). info_print () { echo -e "${BOLD}${BGREEN}[ ${BYELLOW}•${BGREEN} ] $1${RESET}" } # Pretty print for input (function). input_print () { echo -ne "${BOLD}${BYELLOW}[ ${BGREEN}•${BYELLOW} ] $1${RESET}" } # Alert user of bad input (function). error_print () { echo -e "${BOLD}${BRED}[ ${BBLUE}•${BRED} ] $1${RESET}" } # Virtualization check (function). virt_check () { hypervisor=$(systemd-detect-virt) case $hypervisor in kvm ) info_print "KVM has been detected, setting up guest tools." pacstrap /mnt qemu-guest-agent &>/dev/null systemctl enable qemu-guest-agent --root=/mnt &>/dev/null ;; vmware ) info_print "VMWare Workstation/ESXi has been detected, setting up guest tools." pacstrap /mnt open-vm-tools >/dev/null systemctl enable vmtoolsd --root=/mnt &>/dev/null systemctl enable vmware-vmblock-fuse --root=/mnt &>/dev/null ;; oracle ) info_print "VirtualBox has been detected, setting up guest tools." pacstrap /mnt virtualbox-guest-utils &>/dev/null systemctl enable vboxservice --root=/mnt &>/dev/null ;; microsoft ) info_print "Hyper-V has been detected, setting up guest tools." pacstrap /mnt hyperv &>/dev/null systemctl enable hv_fcopy_daemon --root=/mnt &>/dev/null systemctl enable hv_kvp_daemon --root=/mnt &>/dev/null systemctl enable hv_vss_daemon --root=/mnt &>/dev/null ;; esac } # Selecting a kernel to install (function). kernel_selector () { info_print "List of kernels:" info_print "1) Stable: Vanilla Linux kernel with a few specific Arch Linux patches applied" info_print "2) Hardened: A security-focused Linux kernel" info_print "3) Longterm: Long-term support (LTS) Linux kernel" info_print "4) Zen Kernel: A Linux kernel optimized for desktop usage" input_print "Please select the number of the corresponding kernel (e.g. 1): " read -r kernel_choice case $kernel_choice in 1 ) kernel="linux" return 0;; 2 ) kernel="linux-hardened" return 0;; 3 ) kernel="linux-lts" return 0;; 4 ) kernel="linux-zen" return 0;; * ) error_print "You did not enter a valid selection, please try again." return 1 esac } # Selecting a way to handle internet connection (function). network_selector () { info_print "Network utilities:" info_print "1) IWD: Utility to connect to networks written by Intel (WiFi-only, built-in DHCP client)" info_print "2) NetworkManager: Universal network utility (both WiFi and Ethernet, highly recommended)" info_print "3) wpa_supplicant: Utility with support for WEP and WPA/WPA2 (WiFi-only, DHCPCD will be automatically installed)" info_print "4) dhcpcd: Basic DHCP client (Ethernet connections or VMs)" info_print "5) I will do this on my own (only advanced users)" input_print "Please select the number of the corresponding networking utility (e.g. 1): " read -r network_choice if ! ((1 <= network_choice <= 5)); then error_print "You did not enter a valid selection, please try again." return 1 fi return 0 } # Installing the chosen networking method to the system (function). network_installer () { case $network_choice in 1 ) info_print "Installing and enabling IWD." pacstrap /mnt iwd >/dev/null systemctl enable iwd --root=/mnt &>/dev/null ;; 2 ) info_print "Installing and enabling NetworkManager." pacstrap /mnt networkmanager >/dev/null systemctl enable NetworkManager --root=/mnt &>/dev/null ;; 3 ) info_print "Installing and enabling wpa_supplicant and dhcpcd." pacstrap /mnt wpa_supplicant dhcpcd >/dev/null systemctl enable wpa_supplicant --root=/mnt &>/dev/null systemctl enable dhcpcd --root=/mnt &>/dev/null ;; 4 ) info_print "Installing dhcpcd." pacstrap /mnt dhcpcd >/dev/null systemctl enable dhcpcd --root=/mnt &>/dev/null esac } # User enters a password for the LUKS Container (function). lukspass_selector () { input_print "Please enter a password for the LUKS container (you're not going to see the password): " read -r -s password if [[ -z "$password" ]]; then echo error_print "You need to enter a password for the LUKS Container, please try again." return 1 fi echo input_print "Please enter the password for the LUKS container again (you're not going to see the password): " read -r -s password2 echo if [[ "$password" != "$password2" ]]; then error_print "Passwords don't match, please try again." return 1 fi return 0 } # Setting up a password for the user account (function). userpass_selector () { input_print "Please enter name for a user account (enter empty to not create one): " read -r username if [[ -z "$username" ]]; then return 0 fi input_print "Please enter a password for $username (you're not going to see the password): " read -r -s userpass if [[ -z "$userpass" ]]; then echo error_print "You need to enter a password for $username, please try again." return 1 fi echo input_print "Please enter the password again (you're not going to see it): " read -r -s userpass2 echo if [[ "$userpass" != "$userpass2" ]]; then echo error_print "Passwords don't match, please try again." return 1 fi return 0 } # Setting up a password for the root account (function). rootpass_selector () { input_print "Please enter a password for the root user (you're not going to see it): " read -r -s rootpass if [[ -z "$rootpass" ]]; then echo error_print "You need to enter a password for the root user, please try again." return 1 fi echo input_print "Please enter the password again (you're not going to see it): " read -r -s rootpass2 echo if [[ "$rootpass" != "$rootpass2" ]]; then error_print "Passwords don't match, please try again." return 1 fi return 0 } # Microcode detector (function). microcode_detector () { CPU=$(grep vendor_id /proc/cpuinfo) if [[ "$CPU" == *"AuthenticAMD"* ]]; then info_print "An AMD CPU has been detected, the AMD microcode will be installed." microcode="amd-ucode" else info_print "An Intel CPU has been detected, the Intel microcode will be installed." microcode="intel-ucode" fi } # User enters a hostname (function). hostname_selector () { input_print "Please enter the hostname: " read -r hostname if [[ -z "$hostname" ]]; then error_print "You need to enter a hostname in order to continue." return 1 fi return 0 } # User chooses the locale (function). locale_selector () { input_print "Please insert the locale you use (format: xx_XX. Enter empty to use en_US, or \"/\" to search locales): " locale read -r locale case "$locale" in '') locale="en_US.UTF-8" info_print "$locale will be the default locale." return 0;; '/') sed -E '/^# +|^#$/d;s/^#| *$//g;s/ .*/ (Charset:&)/' /etc/locale.gen | less -M clear return 1;; *) if ! grep -q "^#\?$(sed 's/[].*[]/\\&/g' <<< $locale) " /etc/locale.gen; then error_print "The specified locale doesn't exist or isn't supported." return 1 fi return 0 esac } # User chooses the console keyboard layout (function). keyboard_selector () { input_print "Please insert the keyboard layout to use in console (enter empty to use US, or \"/\" to look up for keyboard layouts): " read -r kblayout case "$kblayout" in '') kblayout="us" info_print "The standard US keyboard layout will be used." return 0;; '/') localectl list-keymaps clear return 1;; *) if ! localectl list-keymaps | grep -Fxq "$kblayout"; then error_print "The specified keymap doesn't exist." return 1 fi info_print "Changing console layout to $kblayout." loadkeys "$kblayout" return 0 esac } # Welcome screen. echo -ne "${BOLD}${BYELLOW} ====================================================================== ███████╗ █████╗ ███████╗██╗ ██╗ █████╗ ██████╗ ██████╗██╗ ██╗ ██╔════╝██╔══██╗██╔════╝╚██╗ ██╔╝ ██╔══██╗██╔══██╗██╔════╝██║ ██║ █████╗ ███████║███████╗ ╚████╔╝█████╗███████║██████╔╝██║ ███████║ ██╔══╝ ██╔══██║╚════██║ ╚██╔╝ ╚════╝██╔══██║██╔══██╗██║ ██╔══██║ ███████╗██║ ██║███████║ ██║ ██║ ██║██║ ██║╚██████╗██║ ██║ ╚══════╝╚═╝ ╚═╝╚══════╝ ╚═╝ ╚═╝ ╚═╝╚═╝ ╚═╝ ╚═════╝╚═╝ ╚═╝ ====================================================================== ${RESET}" info_print "Welcome to easy-arch, a script made in order to simplify the process of installing Arch Linux." # Setting up keyboard layout. until keyboard_selector; do : ; done # Choosing the target for the installation. info_print "Available disks for the installation:" PS3="Please select the number of the corresponding disk (e.g. 1): " select ENTRY in $(lsblk -dpnoNAME|grep -P "/dev/sd|nvme|vd"); do DISK="$ENTRY" info_print "Arch Linux will be installed on the following disk: $DISK" break done # Setting up LUKS password. until lukspass_selector; do : ; done # Setting up the kernel. until kernel_selector; do : ; done # User choses the network. until network_selector; do : ; done # User choses the locale. until locale_selector; do : ; done # User choses the hostname. until hostname_selector; do : ; done # User sets up the user/root passwords. until userpass_selector; do : ; done until rootpass_selector; do : ; done # Warn user about deletion of old partition scheme. input_print "This will delete the current partition table on $DISK once installation starts. Do you agree [y/N]?: " read -r disk_response if ! [[ "${disk_response,,}" =~ ^(yes|y)$ ]]; then error_print "Quitting." exit fi info_print "Wiping $DISK." wipefs -af "$DISK" &>/dev/null sgdisk -Zo "$DISK" &>/dev/null # Creating a new partition scheme. info_print "Creating the partitions on $DISK." parted -s "$DISK" \ mklabel gpt \ mkpart ESP fat32 1MiB 513MiB \ set 1 esp on \ mkpart CRYPTROOT 513MiB 100% \ ESP="/dev/disk/by-partlabel/ESP" CRYPTROOT="/dev/disk/by-partlabel/CRYPTROOT" # Informing the Kernel of the changes. info_print "Informing the Kernel about the disk changes." partprobe "$DISK" # Formatting the ESP as FAT32. info_print "Formatting the EFI Partition as FAT32." mkfs.fat -F 32 "$ESP" &>/dev/null # Creating a LUKS Container for the root partition. info_print "Creating LUKS Container for the root partition." echo -n "$password" | cryptsetup luksFormat "$CRYPTROOT" -d - &>/dev/null echo -n "$password" | cryptsetup open "$CRYPTROOT" cryptroot -d - BTRFS="/dev/mapper/cryptroot" # Formatting the LUKS Container as BTRFS. info_print "Formatting the LUKS container as BTRFS." mkfs.btrfs "$BTRFS" &>/dev/null mount "$BTRFS" /mnt # Creating BTRFS subvolumes. info_print "Creating BTRFS subvolumes." subvols=(snapshots var_pkgs var_log home root srv) for subvol in '' "${subvols[@]}"; do btrfs su cr /mnt/@"$subvol" &>/dev/null done # Mounting the newly created subvolumes. umount /mnt info_print "Mounting the newly created subvolumes." mountopts="ssd,noatime,compress-force=zstd:3,discard=async" mount -o "$mountopts",subvol=@ "$BTRFS" /mnt mkdir -p /mnt/{home,root,srv,.snapshots,var/{log,cache/pacman/pkg},boot} for subvol in "${subvols[@]:2}"; do mount -o "$mountopts",subvol=@"$subvol" "$BTRFS" /mnt/"${subvol//_//}" done chmod 750 /mnt/root mount -o "$mountopts",subvol=@snapshots "$BTRFS" /mnt/.snapshots mount -o "$mountopts",subvol=@var_pkgs "$BTRFS" /mnt/var/cache/pacman/pkg chattr +C /mnt/var/log mount "$ESP" /mnt/boot/ # Checking the microcode to install. microcode_detector # Pacstrap (setting up a base sytem onto the new root). info_print "Installing the base system (it may take a while)." pacstrap /mnt base "$kernel" "$microcode" linux-firmware "$kernel"-headers btrfs-progs grub grub-btrfs rsync efibootmgr snapper reflector snap-pac zram-generator sudo &>/dev/null # Setting up the hostname. echo "$hostname" > /mnt/etc/hostname # Generating /etc/fstab. info_print "Generating a new fstab." genfstab -U /mnt >> /mnt/etc/fstab # Configure selected locale and console keymap sed -i "/^#$locale/s/^#//" /mnt/etc/locale.gen echo "LANG=$locale" > /mnt/etc/locale.conf echo "KEYMAP=$kblayout" > /mnt/etc/vconsole.conf # Setting hosts file. info_print "Setting hosts file." cat > /mnt/etc/hosts < /mnt/etc/mkinitcpio.conf </dev/null # Setting up clock. hwclock --systohc # Generating locales. locale-gen &>/dev/null # Generating a new initramfs. mkinitcpio -P &>/dev/null # Snapper configuration. umount /.snapshots rm -r /.snapshots snapper --no-dbus -c root create-config / btrfs subvolume delete /.snapshots &>/dev/null mkdir /.snapshots mount -a &>/dev/null chmod 750 /.snapshots # Installing GRUB. grub-install --target=x86_64-efi --efi-directory=/boot/ --bootloader-id=GRUB &>/dev/null # Creating grub config file. grub-mkconfig -o /boot/grub/grub.cfg &>/dev/null EOF # Setting root password. info_print "Setting root password." echo "root:$rootpass" | arch-chroot /mnt chpasswd # Setting user password. if [[ -n "$username" ]]; then echo "%wheel ALL=(ALL:ALL) ALL" > /mnt/etc/sudoers.d/wheel info_print "Adding the user $username to the system with root privilege." arch-chroot /mnt useradd -m -G wheel -s /bin/bash "$username" info_print "Setting user password for $username." echo "$username:$userpass" | arch-chroot /mnt chpasswd fi # Boot backup hook. info_print "Configuring /boot backup when pacman transactions are made." mkdir /mnt/etc/pacman.d/hooks cat > /mnt/etc/pacman.d/hooks/50-bootbackup.hook < /mnt/etc/systemd/zram-generator.conf </dev/null done # Finishing up. info_print "Done, you may now wish to reboot (further changes can be done by chrooting into /mnt)." exit