install.sh

#!/bin/bash


# This will install Arch Linux for an EFI system with the gnome desktop environment
# For reference:
# https://wiki.archlinux.org/index.php/installation_guide
# https://www.youtube.com/watch?v=iF7Y8IH5A3M

# User Input ##################################################################

# Internet Connection
if !(ping -c 2 google.com > /dev/null)
then
  echo "Please connect to the internet before running this script"
  exit
fi

# Inform user
read -p "PLEASE DO NOT MAKE TYPOS BECAUSE THIS SCRIPT ASSUMES ALL USER INPUT IS CORRECT (press enter when understood)" confirm

pacman -Syu --noconfirm pacman-contrib
# Select the drive to install arch on
lsblk
echo -e
read -p "Drive to install arch linux on: " drive
read -p "Is this drive a ssd (y/n): " ssd
export ssd
read -p "Does this machine have an intel cpu (y/n): " intelCPU
export intelCPU

# Swap space size
read -p "Swap space (y/n): " swapChoice
if [ "$swapChoice" == "y" ] || [ "$swapChoice" == "Y" ]
then
  read -p "Swap space size in terms of GiB (Ex: 8): " swapSpace
fi

read -p "Does this have intel graphics and nvidia (y/n): " nvidiaCard
export nvidiaCard

# Enter Location
ls /usr/share/zoneinfo
read -p "Enter Location (As listed): " loc1
location=$loc1
if [ -d /usr/share/zoneinfo/$loc ]
then
    ls /usr/share/zoneinfo/$loc1
    read -p "Enter Location (As listed): " loc2
    location=/usr/share/zoneinfo/${loc1}/$loc2
fi
export location

# Enter username
read -p "Username: " username
export username

# Enter hostname
read -p "Hostname: " hostname
export hostname


# Instalation #################################################################

# Disk Partition with LVM on LUKS with dm-crypt #######
# https://wiki.archlinux.org/index.php/Dm-crypt/Encrypting_an_entire_system#LVM_on_LUKS
# First Parition: EFI
# Second Partition: Encrpted partition

# Clear partition table
(
echo "o" # clear
echo "Y" # confirm
echo "w" # write changes
echo "Y" # confirm
) | gdisk /dev/$drive > /dev/null

# EFI
(
echo "n" # new partition
echo # default partition number
echo # default storage start point
echo "+512MiB" # size
echo "EF00" # hex code
echo "w" # write changes
echo "Y" # confirm
) | gdisk /dev/$drive > /dev/null

# Encrypted partition
(
echo "n" # new patition
echo # default partition number
echo # default storage start point
echo # max size
echo # default hex code
echo "w" # write changes
echo "Y" # confirm
) | gdisk /dev/$drive > /dev/null

# Use lsblk to find the partition IDs
bootPartitionID=$(lsblk  | grep $drive | sed -n 2p | grep $drive \
                                      | cut -d" " -f1 | sed "s/[^0-9a-zA-Z]//g")
encryptedPartitionID=$(lsblk | grep $drive | sed -n 3p | grep $drive \
                                      | cut -d" " -f1 | sed "s/[^0-9a-zA-Z]//g")
export encryptedPartitionID

# Encrpt it
echo $'\n\n\n\n\n'
echo 'YOU ARE NOW BEING PROMPTED TO SET YOUR PASSWORD FOR THE DISK ENCRYPTION!!!!'
echo
cryptsetup luksFormat --type luks2 /dev/$encryptedPartitionID
echo $'\n\n\n\n\n'
echo 'YOU ARE NOW BEING PROMPTED TO ENTER YOUR PASSWORD FOR THE DISK ENCRYPTION!!!!'
echo
cryptsetup open /dev/$encryptedPartitionID encryptedVol

# Create the root and swap if requested
pvcreate /dev/mapper/encryptedVol
vgcreate vol /dev/mapper/encryptedVol

if [ "$swapChoice" == "y" ] || [ "$swapChoice" == "Y" ]
then
  lvcreate -L ${swapSpace}G vol -n swap
  mkswap /dev/mapper/vol-swap
fi
lvcreate -l 100%FREE vol -n root

# Format the partitions and mount
mkfs.ext4 /dev/mapper/vol-root
mkfs.fat -F32 /dev/$bootPartitionID

mount /dev/mapper/vol-root /mnt
mkdir /mnt/boot
mount /dev/$bootPartitionID /mnt/boot

# Swap if the user wanted one
if [ "$swapChoice" == "y" ] || [ "$swapChoice" == "Y" ]
then
  swapon /dev/mapper/vol-swap
fi


# Set up the mirrors for downloads #######
echo $'\n\n\n\n\n'
echo "THERE MAY BE NO OUTPUT FOR AWHILE DUE TO GENERATING A MIRRORLIST AND THIS TAKES SOME TIME"
cp /etc/pacman.d/mirrorlist /etc/pacman.d/mirrorlist.backup
sed -i 's/^#Server/Server/g' /etc/pacman.d/mirrorlist.backup
rankmirrors -n 10 /etc/pacman.d/mirrorlist.backup > /etc/pacman.d/mirrorlist
rm /etc/pacman.d/mirrorlist.backup

# Install base system
pacstrap /mnt base base-devel

# Generate fstab for system configuration #######
genfstab -U /mnt >> /mnt/etc/fstab

# Run personalize.sh to share variables collected in this script and download
# necessary files
wget -O rootPersonalize.sh \
https://raw.githubusercontent.com/ThatGuyNamedTim/ArchLinuxInstall/master/rootPersonalize.sh
mv rootPersonalize.sh /mnt
arch-chroot /mnt chmod +x ./rootPersonalize.sh

wget -O powertopUSB.service \
https://raw.githubusercontent.com/ThatGuyNamedTim/ArchLinuxInstall/master/powertopUSB.service
mv powertopUSB.service /mnt
wget -O powertopUSB \
https://raw.githubusercontent.com/ThatGuyNamedTim/ArchLinuxInstall/master/powertopUSB
mv powertopUSB /mnt

arch-chroot /mnt ./rootPersonalize.sh
rm /mnt/rootPersonalize.sh