installarchlinux

#!/bin/bash

echo -e "\n### Welcome to the Arch Linux install script made by shahzebs ###\n"

echo -e "Checkpoint 1/5\nFollowing changes will be made:"
echo -e "\t- Update system clock"
echo -e "\t- Partition the disks"
read -p "Press any key to continue or ^C to abort..."

timedatectl set-ntp true

lsblk
read -p "Which device do you want to use? " device
[ -z "$device" ] && echo "Aborted.." && exit
fdisk /dev/$device
lsblk
[ "$device" == *"nvme"* ] && device+="p"

read -p "Enter partition number in order of root, swap, and EFI (if applicable), e.g. 231 or 12: " partitions
[ -z "$partitions" ] && echo "Aborted.." && exit
rootp=$(echo $partitions | cut -c 1)
swapp=$(echo $partitions | cut -c 2)
efip=$(echo $partitions | cut -c 3)

echo -e "\nFollowing changes will be made:"
echo -e "\t- Format the partitions"
echo -e "\t- Mount the file systems"
echo -e "\t- Select the mirrors"
read -p "Press any key to continue or ^C to abort..."

mkfs.ext4 /dev/$device$rootp
mkswap /dev/$device$swapp
swapon /dev/$device$swapp
[ -n "$efip" ] && mkfs.fat -F32 /dev/$device$efip

mount /dev/$device$rootp /mnt
[ -n "$efip" ] && mkdir /mnt/efi && mount /dev/$device$efip /mnt/efi

vim /etc/pacman.d/mirrorlist

echo -e "\nCheckpoint 2/5\nFollowing changes will be made:"
echo -e "\t- Install essential packages"
echo -e "\t- Fstab"
read -p "Press any key to continue or ^C to abort..."
pacstrap /mnt base linux linux-firmware linux-headers git openssh networkmanager gvim man-db man-pages texinfo grub sudo

genfstab -U /mnt >> /mnt/etc/fstab

echo -e "\nCheckpoint 3/5\nFollowing changes will be made with chroot:"
echo -e "\t- Time zone"
echo -e "\t- Locale"
echo -e "\t- Hosts"
read -p "Press any key to continue or ^C to abort..."

arch-chroot /mnt ln -sf /usr/share/zoneinfo/Europe/Oslo /etc/localtime
arch-chroot /mnt hwclock --systohc
arch-chroot /mnt sed -i "s/^#en_US.UTF-8 UTF-8/en_US.UTF-8 UTF-8/" /etc/locale.gen
arch-chroot /mnt locale-gen
read -p "Enter the hostname for this machine: " hostname
[ -z "$hostname" ] && read -p "Enter the hostname for this machine: " hostname
[ -z "$hostname" ] && hostname="myhostname"

echo -e "echo \"LANG=en_US.UTF-8\" > /etc/locale.conf
echo \"KEYMAP=no-latin1\" > /etc/vconsole.conf
echo \"$hostname\" > /etc/hostname
echo -e \"127.0.0.1\\\tlocalhost\\\n::1\\\t\\\tlocalhost\\\n127.0.0.1\\\t$hostname.localdomain\\\t$hostname\" >> /etc/hosts" > /mnt/chrootechos
chmod +x /mnt/chrootechos
arch-chroot /mnt ./chrootechos
rm /mnt/chrootechos

echo -e "\nCheckpoint 4/5\nFollowing changes will be made with chroot:"
echo -e "\t- Initramfs"
echo -e "\t- Root password"
echo -e "\t- GRUB Bootloader"
echo -e "\t- Microcode"
read -p "Press any key to continue or ^C to abort..."

arch-chroot /mnt mkinitcpio -P
echo "Enter a password for root user"
arch-chroot /mnt passwd

if [ -n "$efip" ]; then
	pacstrap /mnt efibootmgr
	arch-chroot /mnt grub-install --target=x86_64-efi --efi-directory=efi --bootloader-id=GRUB 
else
    [ "$device" == *"nvme"* ] && device="$(printf "$device" | sed 's/.$//')"
	arch-chroot /mnt grub-install --target=i386-pc /dev/$device
fi
arch-chroot /mnt grub-mkconfig -o /boot/grub/grub.cfg

echo "Microcode install"
read -p "CPU manufacturer: 1) Intel 2) AMD: " cpu
if [ "$cpu" == "1" ]; then
    pacstrap /mnt intel-ucode
    arch-chroot /mnt grub-mkconfig -o /boot/grub/grub.cfg
elif [ "$cpu" == "2" ]; then
    pacstrap /mnt amd-ucode
    arch-chroot /mnt grub-mkconfig -o /boot/grub/grub.cfg
else
    echo -e "Not valid option. Skipping...o\nRemember to install microcode later"
fi

echo -e "\nCheckpoint 5/5\nCreate your main user with sudo privileges"
read -p "Enter user name: " user
arch-chroot /mnt groupadd sudo
arch-chroot /mnt useradd -m -G sudo $user
arch-chroot /mnt sed -i 's/^# \(%sudo.*$\)/\1/' /etc/sudoers
echo "Enter password for user $user"
arch-chroot /mnt passwd $user

echo -e "\nDone. Reboot to use your fresh install"