1-base-install.sh

#!/bin/sh

# fancy greeting
echo "*                                **                  *     "  
echo "*                               *  *                 *     "  
echo "*                              *    *                *     "  
echo "*       ****   ******  *    *  *    *  * **   ****   * *** "  
echo "*           *      *   *    *  *    *   *    *    *  **   *"  
echo "*       *****     *    *    *  ******   *    *       *    *"  
echo "*      *    *    *     *   **  *    *   *    *       *    *"  
echo "*      *   **   *       *** *  *    *   *    *    *  *    *"  
echo "*****   *** *  ******       *  *    *   *     ****   *    *"  
echo "                       *    *                              "  
echo "                        ****                               " 
echo "Hello and Welcome my lazy friend."

timedatectl set-ntp true

# configure pacman for installation
sed -i 's/^#Para/Para/' /etc/pacman.conf # download go zoom

# gather user input

# load from install.conf if exists
if [ -f /root/lazyArch/install.conf ]
then
    . /root/lazyArch/install.conf

    echo "Please enter the data not defined in install.conf"

    # get missing values
    if [ -z "$hostname" ]
    then
        printf "Hostname: "
        read -r hostname
    fi
    if [ -z "$pwroot" ]
        then
            printf "Root Password: "
            read -r pwroot
        fi
    if [ -z "$username" ]
        then
            printf "Username: "
            read -r username
        fi
    if [ -z "$pwuser" ]
        then
            printf "User Password: "
            read -r pwuser
        fi
    if [ -z "$keyboard" ]
        then
            printf "Keyboard Layout: "
            read -r keyboard
        fi
    if [ -z "$xkeyboard" ]
        then
            printf "Keyboard Layout (X11): "
            read -r xkeyboard
        fi
    if [ -z "$locale" ]
        then
            printf "Locale: "
            read -r locale
        fi
    if [ -z "$timezone" ]
        then
            printf "Timezone: "
            read -r timezone
    fi

else
    echo "For the beginning please enter some data."

    # I don't always ask for the hostname because you could prepare a config
    # including hostname without knowing the drive name
    printf "Hostname: "
    read -r hostname
    printf "Root Password: "
    read -r pwroot
    printf "Username: "
    read -r username
    printf "User Password: "
    read -r pwuser
    printf "Keyboard Layout: "
    read -r keyboard
    printf "Keyboard Layout (X11): "
    read -r xkeyboard
    printf "Locale: "
    read -r locale
    printf "Timezone: "
    read -r timezone
fi

# ALWAYS ask for drive to format
# so configs could be portable
printf "\nNow we need to know where to Install our fancy Arch.\n"
echo "Here are the available block devices."
lsblk
echo "Please enter the target disk: (example /dev/sda)"
echo "IMPORTANT: please don't screw this up!"

printf "DISK: "
read -r DISK

if [ -z "$desktop" ]
    then
    # ask for Desktop environment
    printf "\nChoose your Desktop Environment.\n"
    printf "0* - None (Xorg will still be installed)\n"
    printf "1  - Plasma\n"
    printf "2  - Gnome\n"
    printf "3  - Mate\n"
    printf "\nChoose: "
    read -r dechoice

    case $dechoice in
        1)
            desktop="plasma"
            ;;
        2)
            desktop="gnome"
            ;;
        3)
            desktop="mate"
            ;;
        *)
            desktop="none"
            ;;
    esac
fi

# generate install.config for later use
cat >install.conf <<EOF
hostname=$hostname
pwroot=$pwroot
username=$username
pwuser=$pwuser
keyboard=$keyboard
xkeyboard=$xkeyboard
locale=$locale
timezone=$timezone
desktop=$desktop
EOF

echo "Great! We are almost ready."
printf "Please double check if everything is correct.\n\n"

printf "\n\nYou gave this information:\n\n"

cat install.conf

printf "\n\nAnd want to install on this disk: %s\n\n\n" "$DISK"

echo "CONTINUING WILL WIPE YOUR SELECTED DRIVE!!!"
printf "Are you sure you want to continue? (Y/N) "
read -r formatdisk

case $formatdisk in
    y|Y|yes|Yes|YES)
        pacman -Sy --noconfirm --needed gptfdisk
        # disk prep
        sgdisk -Z "${DISK}" # zap all on disk
        sgdisk -a 2048 -o "${DISK}" # new gpt disk 2048 alignment

        # create partitions
        sgdisk -n 1:0:+512M "${DISK}" # partition 1 (UEFI SYS), default start block, 512MB
        sgdisk -n 2:0:0     "${DISK}" # partition 2 (Root), default start, remaining

        # set partition types
        sgdisk -t 1:ef00 "${DISK}"
        sgdisk -t 2:8300 "${DISK}"

        # label partitions
        sgdisk -c 1:"UEFISYS" "${DISK}"
        sgdisk -c 2:"ROOT" "${DISK}"

        # make filesystems
        printf "\nCreating Filesystems...\n\n"

        case $DISK in
            /dev/nvme*)
                mkfs.vfat -F32 -n "UEFISYS" "${DISK}p1"
                mkfs.ext4 -L "ROOT" "${DISK}p2"
                ;;
            *)
                mkfs.vfat -F32 -n "UEFISYS" "${DISK}1"
                mkfs.ext4 -L "ROOT" "${DISK}2"
                ;;
        esac
        ;;
    *)
        touch abort.install
        exit
        ;;
esac

# mount target
mount -L ROOT /mnt
mkdir -p /mnt/boot/efi
mount -t vfat -L UEFISYS /mnt/boot/

# base install
#pacstrap /mnt "$(awk '{print $1}' "$(pwd)"/base.list)" --noconfirm
pacstrap /mnt base base-devel linux linux-headers linux-lts linux-lts-headers linux-firmware archlinux-keyring --noconfirm
genfstab -U /mnt >> /mnt/etc/fstab

mkdir -p /mnt/root/lazyArch/
cp --recursive /root/lazyArch/* /mnt/root/lazyArch/