Arch Linux ARM disk image creator

gistfile1.sh

#!/bin/sh
set -e
set -u
set -x

# Environment variables
export PATH=/usr/bin:/bin:/usr/sbin:/bin
export LANG=en_US.UTF-8

# External commands
BSDTAR=`which bsdtar`
CURL=`which curl`
FALLOCATE=`which fallocate`
FDISK=`which fdisk`
FSCK_VFAT=`which fsck.vfat`
LOSETUP=`which losetup`
MKFS_EXT4=`which mkfs.ext4`
MKFS_VFAT=`which mkfs.vfat`
MKTEMP=`which mktemp`
P7ZIP=`which 7z`
SUDO=`which sudo`

# Files
select name in "Raspberry Pi 1" "Raspberry Pi 2"
do
    case ${name} in
    "Raspberry Pi 1")
        url=http://archlinuxarm.org/os/ArchLinuxARM-rpi-latest.tar.gz
        name_prefix=ArchLinuxARM-rpi
    ;;
    "Raspberry Pi 2")
        url=http://archlinuxarm.org/os/ArchLinuxARM-rpi-2-latest.tar.gz
        name_prefix=ArchLinuxARM-rpi-2
    ;;
    esac
    break
done
src=`basename ${url}`
img=${name_prefix}-`date +%Y%m%d`.img

#-------------------------------------------------------------------------------

test ! -f ${img} || rm ${img}
test   -f ${src} || ${CURL} -LO ${url}

${FALLOCATE} -l 1GB ${img}
${FDISK} ${img} <<!
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${FDISK} --list ${img}

${SUDO} -v
loop_device=`${SUDO} ${LOSETUP} --find --partscan --show ${img}`
loop_device_boot=${loop_device}p1
loop_device_root=${loop_device}p2
${SUDO} ${MKFS_VFAT}    ${loop_device_boot}
${SUDO} ${FSCK_VFAT} -y ${loop_device_boot}
${SUDO} ${MKFS_EXT4}    ${loop_device_root}
mount_point=`${MKTEMP} -d`
${SUDO} mount ${loop_device_root} ${mount_point}
${SUDO} mkdir ${mount_point}/boot
${SUDO} mount ${loop_device_boot} ${mount_point}/boot
${SUDO} ${BSDTAR} -xpf ${src} -C ${mount_point}
${SUDO} umount ${loop_device_boot} ${loop_device_root}
rm -r ${mount_point}
${SUDO} losetup --detach ${loop_device}

${P7ZIP} a ${img}.zip ${img}

gistfile3.sh

#!/bin/sh
set -e
set -u
set -x

# Environment variables
export PATH=/usr/bin:/bin:/usr/sbin:/bin
export LANG=en_US.UTF-8

# External commands
BSDTAR=`which bsdtar`
CURL=`which curl`
FALLOCATE=`which fallocate`
FDISK=`which fdisk`
FSCK_VFAT=`which fsck.vfat`
LOSETUP=`which losetup`
MKFS_EXT4=`which mkfs.ext4`
MKFS_VFAT=`which mkfs.vfat`
MKTEMP=`which mktemp`
P7ZIP=`which 7z`
SUDO=`which sudo`

# Files
select name in "Raspberry Pi 1" "Raspberry Pi 2"
do
    case ${name} in
    "Raspberry Pi 1")
        url=http://archlinuxarm.org/os/ArchLinuxARM-rpi-latest.tar.gz
        name_prefix=ArchLinuxARM-rpi-QEMU
    ;;
    "Raspberry Pi 2")
        url=http://archlinuxarm.org/os/ArchLinuxARM-rpi-2-latest.tar.gz
        name_prefix=ArchLinuxARM-rpi-2-QEMU
    ;;
    esac
    break
done
src=`basename ${url}`
img=${name_prefix}-`date +%Y%m%d`.img

#-------------------------------------------------------------------------------

test ! -f ${img} || rm ${img}
test   -f ${src} || ${CURL} -LO ${url}

${FALLOCATE} -l 1GB ${img}
${FDISK} ${img} <<!
o
n




w
!
${FDISK} --list ${img}

${SUDO} -v
loop_device=`${SUDO} ${LOSETUP} --find --partscan --show ${img}`
loop_device_root=${loop_device}p1
${SUDO} ${MKFS_EXT4}    ${loop_device_root}
mount_point=`${MKTEMP} -d`
${SUDO} mount ${loop_device_root} ${mount_point}
${SUDO} ${BSDTAR} -xpf ${src} -C ${mount_point}
(
    cd ${mount_point}
    ${SUDO} sed -i "s|^/dev/mmcblk0p1|#\0|" etc/fstab
    cat <<! | ${SUDO} tee etc/udev/rules.d/90-qemu.rules 
KERNEL=="sda",  SYMLINK+="mmcblk0"
KERNEL=="sda?", SYMLINK+="mmcblk0p%n"
!
)
${SUDO} umount ${loop_device_root}
rm -r ${mount_point}
${SUDO} losetup --detach ${loop_device}

${P7ZIP} a ${img}.zip ${img}