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#!/bin/sh -e
HOSTNAME="$1"
if [ -z "$HOSTNAME" ]; then
echo "usage: $0 hostname"
exit 1
fi
cleanup() {
rm -rf "$tmp"
}
makefile() {
OWNER="$1"
PERMS="$2"
FILENAME="$3"
cat > "$FILENAME"
chown "$OWNER" "$FILENAME"
chmod "$PERMS" "$FILENAME"
}
rc_add() {
mkdir -p "$tmp"/etc/runlevels/"$2"
ln -sf /etc/init.d/"$1" "$tmp"/etc/runlevels/"$2"/"$1"
}
tmp="$(mktemp -d)"
trap cleanup EXIT
mkdir -p "$tmp"/etc
makefile root:root 0644 "$tmp"/etc/hostname <<EOF
$HOSTNAME
EOF
mkdir -p "$tmp"/etc/network
makefile root:root 0644 "$tmp"/etc/network/interfaces <<EOF
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet dhcp
EOF
mkdir -p "$tmp"/etc/apk
makefile root:root 0644 "$tmp"/etc/apk/world <<EOF
alpine-base
EOF
rc_add devfs sysinit
rc_add dmesg sysinit
rc_add mdev sysinit
rc_add hwdrivers sysinit
rc_add modloop sysinit
rc_add hwclock boot
rc_add modules boot
rc_add sysctl boot
rc_add hostname boot
rc_add bootmisc boot
rc_add syslog boot
rc_add mount-ro shutdown
rc_add killprocs shutdown
rc_add savecache shutdown
tar -c -C "$tmp" etc | gzip -9n > $HOSTNAME.apkovl.tar.gz