Autoinstall ArchLinux on a existing OS

chroot.sh

#!/bin/sh -e

ARCH_VERSION="2014.12.01"
ARCH_FILE="archlinux-bootstrap-$ARCH_VERSION-x86_64.tar.gz"
ARCH_BOOTSTRAP="http://archlinux.mirrors.ovh.net/archlinux/iso/$ARCH_VERSION/$ARCH_FILE"
ARCH_SUMS="http://archlinux.mirrors.ovh.net/archlinux/iso/$ARCH_VERSION/sha1sums.txt"

# download bootstrap image
cd /tmp
wget $ARCH_BOOTSTRAP
wget $ARCH_SUMS

# check SHA1 but ignore missing files
sha1sum -c sha1sums.txt | grep "$ARCH_FILE: OK"

tar xf $ARCH_FILE

# Use OVH mirror
echo "Server = http://archlinux.mirrors.ovh.net/archlinux/\$repo/os/\$arch" > /tmp/root.x86_64/etc/pacman.d/mirrorlist

# get the installer script
#wget "https://gist.github.com/julianwachholz/$GIST_ID/install.sh"
#mv install.sh /tmp/root.x86_64
#chmod o+x /tmp/root.x86_64/install.sh

# Enter chroot
/tmp/root.x86_64/bin/arch-chroot /tmp/root.x86_64/