http://docs.khadas.com/_export/code/scripts/oowow-dump2xz?codeblock=0

mkdir FOO && cd FOO
curl http://docs.khadas.com/_export/code/scripts/oowow-dump2xz?codeblock=0 | sh -s -

oowow-dump2xz

#!/bin/sh
 
## hyphop ##
 
#= oowow-dump2xz
 
#: USAGE mkdir FOO && cd FOO && [OSVER=] [VER=] [LABEL=] [OUT=] owow-dump2xz
 
lowcase(){ echo "$@" | tr '[:upper:]' '[:lower:]' ; }
upcase(){ echo "$@" | tr '[:lower:]' '[:upper:]' ; }
CMD(){ echo "# $@" >&2 ; "$@" ;}
DIE(){ echo "! $@" >&2 ; exit 1;}
 
REMOTE=${REMOTE:-172.22.1.1}
XZE=https://raw.githubusercontent.com/hyphop/khadas-rescue-tools/master/scripts/xze
XZE=http://docs.khadas.com/_export/code/scripts/xze?codeblock=0
 
for D in *-dump.img; do
    [ -s "$D" ] && break
    D=
done
 
[ "$D" ] || { # DUMP begin
echo DUMP data ...
ping -q -c1 $REMOTE || DIE "cant reach $REMOTE host"
BOARD=$(ssh root@$REMOTE /opt/board_name 2>/dev/null )
echo "BOARD: $BOARD"
[ "BOARD" ] || DIE "BOARD undetected"
T=$BOARD.sfdisk
ssh root@$REMOTE sfdisk --dump \$\(/opt/mmc_disk\)>$T # | tee $T
echo --
USER_DATA=userdata
grep $USER_DATA $T | while read a b c d e; do
[ "$d" ] || DIE "partition $USER_DATA not found"
echo $d - $e
echo ${d%,*} > $T.userdata
done
read USER_START < $T.userdata
BS=512
BYTES=${BYTES:-$((USER_START*BS))}
board=${board-$(lowcase $BOARD)}
DUMP=$BOARD-emmc-dump.img
echo "Dump image from $BOARD > $DUMP $BYTES bytes ...wait..."
[ -s ./xze ] || curl "$XZE" -O
CMD curl -L "$REMOTE"/api/disk/rdz/mmc.zst:$((BYTES)) -o$DUMP.zst
CMD zstd -d $DUMP.zst
D=$DUMP
} # DUMP end
 
BOARD=${D%%-*}
board=${board-$(lowcase $BOARD)}
LABEL=${LABEL:-Android}
label=${label:-$(lowcase $LABEL)}
OSVER=${OSVER:-14}
VER=${VER:-v240725-beta}
OUT=${OUT:-$board-$label-$OSVER-$VER.img}
 
echo "CONVERT $D to $OUT ..."
 
[ -e "$OUT" ] && DIE "image $OUT already exist"
 
CMD truncate -s+50M "$D"
CMD mv "$D" "$OUT"
 
CMD sh ./xze "$OUT" \
    --meta \
    label="$LABEL" \
    builder="Khadas" \
    date="$(TZ=GMT+0 date)" \
    match=BOARD=$BOARD \
    duration=90 \
    desc="$BOARD $LABEL $OSVER $VER"