debootstrap.sh

#!/bin/sh
#
# Run Script
#   wget -qO - "https://git.io/vUGQt" | sudo sh
# Edit Script
#   wget -q --content-disposition "https://git.io/vUGQt"
#

set -e

DIST=debian
SUITE=jessie
ARCH=amd64
MIRROR=http://srv:3142/${DIST}/
ROOTFS=chroot
DEBOPT="--variant=minbase"

dpkg -l | grep -qs debootstrap || apt-get install debootstrap
dpkg -l | grep -qs squashfs-tools || apt-get install squashfs-tools

mount | grep -qs ${ROOTFS}/dev/pts && umount -lf ${ROOTFS}/dev/pts
mount | grep -qs ${ROOTFS}/dev/shm && umount -lf ${ROOTFS}/dev/shm
mount | grep -qs ${ROOTFS}/proc    && umount -lf ${ROOTFS}/proc
mount | grep -qs ${ROOTFS}/sys     && umount -lf ${ROOTFS}/sys
mount | grep -qs ${ROOTFS}/dev     && umount -lf ${ROOTFS}/dev

test -d ${ROOTFS}     && rm -fr ${ROOTFS}
test -f rootfs.sfs.xz && rm -fr rootfs.sfs.xz

debootstrap --arch=${ARCH} ${DEBOPT} ${SUITE} ${ROOTFS} ${MIRROR}

mount --bind    /dev   ${ROOTFS}/dev
mount -t sysfs  sysfs  ${ROOTFS}/sys
mount -t proc   proc   ${ROOTFS}/proc
mount -t tmpfs  tmpfs  ${ROOTFS}/dev/shm
mount -t devpts devpts ${ROOTFS}/dev/pts

chroot ${ROOTFS} /bin/sh << '__EOS__'
#!/bin/sh

set -e

export HOME=/root
export LC_ALL=C
export LANGUAGE=C
export LANG=C
export DEBIAN_FRONTEND=noninteractive
export DEBIAN_PRIORITY=critical
export DEBCONF_NONINTERACTIVE_SEEN=true

# no install recommends/suggests packages
echo '// no install recommends/suggests packages' >  /etc/apt/apt.conf.d/99norecommends
echo 'APT::Install-Recommends "false";'           >> /etc/apt/apt.conf.d/99norecommends
echo 'APT::Install-Suggests "false";'             >> /etc/apt/apt.conf.d/99norecommends

# assume yes install packages
echo '// assume yes install packages' >  /etc/apt/apt.conf.d/99assumeyes
echo 'APT::Get::Assume-Yes "true";'   >> /etc/apt/apt.conf.d/99assumeyes

# systemd require dbus
apt-get install dbus

# dbus initilized
dbus-uuidgen > /var/lib/dbus/machine-id

# delay configuration install packages
apt-get install apt-utils

# package configuration utility
apt-get install debconf-utils

# locale
echo 'locales locales/locales_to_be_generated    multiselect ja_JP.UTF-8 UTF-8' | debconf-set-selections
echo 'locales locales/default_environment_locale select      ja_JP.UTF-8'       | debconf-set-selections
apt-get install locales

# tzdata
echo 'Asia/Tokyo' > /etc/timezone
cp /usr/share/zoneinfo/Asia/Tokyo /etc/localtime
dpkg-reconfigure tzdata

# enable root login
echo 'root:root' | chpasswd

# adduser live
adduser --disabled-password --gecos "Debian Live User,,," user
echo 'user:live' | chpasswd

# log
dpkg -l > /packages.log
debconf-get-selections > /configs.log

# cleanup
rm /var/lib/dbus/machine-id
apt-get clean
__EOS__

umount -lf ${ROOTFS}/dev/pts
umount -lf ${ROOTFS}/dev/shm
umount -lf ${ROOTFS}/proc
umount -lf ${ROOTFS}/sys
umount -lf ${ROOTFS}/dev

mv ${ROOTFS}/packages.log .
mv ${ROOTFS}/configs.log .

mksquashfs ${ROOTFS} rootfs.sfs.xz -comp xz -e boot