not working on usb-boot

[anton1234567879]

partition_setup.sh isn't working on usb boot.
i have mannaged to work, nothing feanzy but does the job

`#!/bin/sh

set -ex

if [ -z "$part1" ] || [ -z "$part2" ] || [ -z "$part3" ] || [ -z "$part4" ]; then
printf "Error: missing environment variable part1 or part2\n" 1>&2
exit 1
fi

mkdir -p /tmp/1 /tmp/2 /tmp/2/ramdisk

mount "$part1" /tmp/1

path_loc=find / -type d | grep Android

tar xf $path_loc/boot.tar -C /tmp/1

mv /tmp/1/boot/* /tmp/1

rm -rf /tmp/1/boot*

mv /tmp/1/ramdisk.img /tmp/2/ramdisk.cpio.gz

cd /tmp/2

gzip -d ramdisk.cpio.gz

cd /tmp/2/ramdisk

$path_loc/cpio -i -F ../ramdisk.cpio

bl=$( blkid )

p2=$( echo "$part2" | sed -e "s|PARTUUID=||" )
p3=$( echo "$part3" | sed -e "s|PARTUUID=||" )
p4=$( echo "$part4" | sed -e "s|PARTUUID=||" )

a2=$( echo "$bl" | grep "$p2" )
b2=$( echo "$a2" | sed -e "s|/dev/|/dev/block/|" | sed "s|: .||" )
c2=$( echo "$a2" | sed "s|: .||" )

a3=$( echo "$bl" | grep "$p3" )
b3=$( echo "$a3" | sed -e "s|/dev/|/dev/block/|" | sed "s|: .||" )
c3=$( echo "$a3" | sed "s|: .||" )

a4=$( echo "$bl" | grep "$p4" )
b4=$( echo "$a4" | sed -e "s|/dev/|/dev/block/|" | sed "s|: .||" )
c4=$( echo "$a4" | sed "s|: .||" )

dd if=$path_loc/system.img of=$c3 bs=1M

sed /tmp/2/ramdisk/fstab.rpi3 -i -e "s|^/dev.* /system |$b2 /system |"
sed /tmp/2/ramdisk/fstab.rpi3 -i -e "s|^/dev.* /cache |$b3 /cache |"
sed /tmp/2/ramdisk/fstab.rpi3 -i -e "s|^/dev.* /data |$b4 /data |"

$path_loc/cpio -i -t -F ../ramdisk.cpio | $path_loc/cpio -o -H newc > ../ramdisk_new.cpio

mv ../ramdisk_new.cpio /tmp/1/ramdisk.img

cd /

umount /tmp/1`

[anton1234567879]

upps one faillure
line : dd if=$path_loc/system.img of=$c3 bs=1M
must be : dd if=$path_loc/system.img of=$c2 bs=1M

[anton1234567879]

oh no my dear
you can leave
c4=$( echo "$a4" | sed "s|: .||" )
c3=$( echo "$a3" | sed "s|: .||" )
out