bakeArchPi.sh

#!/bin/bash

# http://archlinuxarm.org/platforms/armv6/raspberry-pi

here=$(cd $(dirname $0); pwd)
[ $UID != 0 ] && exec sudo ${here}/$0 $@

dir=`mktemp -d` && cd $dir
device="/dev/mmcblk0"
bootPart="${device}p1"
rootPart="${device}p2"
bootDir="boot"
rootDir="root"

trap "rm -rf ${dir}" SIGEXIT

# Format the card
sfdisk ${device} << EOF
2048,+100MiB,c
,
EOF

# Create and mount the FAT filesystem:
mkfs.vfat ${bootPart}
mkdir ${bootDir}
mount ${bootPart} ${bootDir}

# Create and mount the ext4 filesystem:
mkfs.ext4 ${rootPart}
mkdir ${rootDir}
mount ${rootPart} ${rootDir}

# Download and extract the root filesystem (as root, not via sudo):
wget http://archlinuxarm.org/os/ArchLinuxARM-rpi-latest.tar.gz
bsdtar -xpf ArchLinuxARM-rpi-latest.tar.gz -C ${rootDir}
sync

# Move boot files to the first partition:
mv ${rootDir}/boot/* ${bootDir}

# Unmount the two partitions:
umount ${bootDir} ${rootDir}

echo "Done."