Automatically install ArchLinux for a VirtualBox virtual machine.

archlinux_install.sh

#! /bin/sh

# Download this file easily:
#   wget -O install.sh https://tinyurl.com/wralvm12
#   chmod +x install.sh

C_RESET="\e[0;0m"
B_BLACK="\e[1;30m"
B_YELLOW="\e[1;33m"
B_CYAN="\e[1;36m"
B_WHITE="\e[1;37m"

wait_user () {
  printf "${B_YELLOW}On the next command, you will have to do something.${C_RESET}\n"
  if [ "$1" ]; then
    echo
    printf "  ${B_BLACK}$1${C_RESET}\n"
    echo
  fi
  printf "${B_YELLOW}Press ${B_WHITE}enter ${B_YELLOW}to continue.${C_RESET}"
  read
}

write_info () {
  printf "${B_BLACK}:: ${B_CYAN}$@${C_RESET}\n"
}

# Source for all the following commands:
#   https://wiki.archlinux.org/index.php/installation_guide

write_info "Updating the system clock"
timedatectl set-ntp true

write_info "Partitioning the disks"
wait_user "For a Single Root Partition, follow these steps
  > Select dos
  > Press enter [ New ]
  > Press enter (full size partition)
  > Press enter [ primary ]
  > Select [Bootable] the presse enter
  > Select [ Write ] then press enter, then type yes, then press enter
  > Select [ Quit ] then press enter"
cfdisk

# For some partition scheme examples, see
#    https://wiki.archlinux.org/index.php/partitioning#Example_layouts

write_info "Formatting the partition"
mkfs.ext4 /dev/sda1

write_info "Mounting the new file system"
mount /dev/sda1 /mnt

write_info "Installing the base and base-devel packages"
pacstrap /mnt base base-devel

write_info "Generating the fstab"
genfstab -U /mnt >> /mnt/etc/fstab

# Write all the next commands into another file because
# we need to log as root into the new system
write_info "Creating the next install.sh script"
echo '#! /bin/sh

C_RESET="\e[0;0m"
B_BLACK="\e[1;30m"
B_YELLOW="\e[1;33m"
B_CYAN="\e[1;36m"
B_WHITE="\e[1;37m"

wait_user () {
  printf "${B_YELLOW}On the next command, you will have to do something.${C_RESET}\n"
  if [ "$1" ]; then
    echo
    printf "  ${B_BLACK}$1${C_RESET}\n"
    echo
  fi
  printf "${B_YELLOW}Press ${B_WHITE}enter ${B_YELLOW}to continue.${C_RESET}"
  read
}

write_info () {
  printf "${B_BLACK}:: ${B_CYAN}$@${C_RESET}\n"
}

write_info "Setting the timezone"
ln -sf /usr/share/zoneinfo/Europe/Paris /etc/localtime

write_info "Generating /etc/adjtime"
hwclock --systohc

write_info "Setting current locale"
wait_user "Uncomment en_US.UTF-8 UTF-8 (line 175, if commented)"
vi +175 /etc/locale.gen

write_info "Generating locale file"
locale-gen

write_info "Setting the LANG variable"
echo "LANG=en_US.UTF-8" > /etc/locale.conf

write_info "Creating the hostname file"
wait_user "Write your hostname in the file. Ex: wradion-archlinux"
vi /etc/hostname

write_info "Adding standard entries to hosts file"
echo -e "
127.0.0.1\tlocalhost
::1\t\tlocalhost" >> /etc/hosts

write_info "Setting the root password"
wait_user "You will need to type the password yourself :)"
passwd

write_info "Downloading the grub package"
pacman -S grub --noconfirm

write_info "Installing GRUB Bootloader"
grub-install /dev/sda

write_info "Generating grub config file"
grub-mkconfig -o /boot/grub/grub.cfg

write_info "Enabling dhcpcd service"
systemctl enable dhcpcd

write_info "Creating the wradion user"
useradd -m wradion

write_info "Setting the password for wradion"
passwd wradion

write_info "Installation done! Next steps:"
write_info "- Logout: exit or CTRL+D"
write_info "- Remove this file: rm /mnt/install.sh"
write_info "- Unmount partition: umount -R /mnt"
echo
write_info "Then, you can:"
write_info "- Shutdown the machine: poweroff"
write_info "- Remove the ISO file from the IDE disk input"
write_info "- Restart the VM"

exit 0' >> /mnt/install.sh

write_info "Giving execution right to the script"
chmod +x /mnt/install.sh

write_info "Login to root into the new system"
wait_user "You will need to continue the installation by running
  the next part of the script: ./install.sh"
arch-chroot /mnt

write_info "Done!"

exit 0