Update chr.sh

Signed-off-by: elseif <elseif@live.cn>

chr.sh

@@ -1,26 +1,15 @@
-#!/bin/bash
-apt-get install -y gdisk extlinux
-dd if=/dev/zero of=/dev/sda bs=1 count=512 conv=notrunc
-sgdisk --clear --set-alignment=2 --new=1::+32M --typecode=1:8300 --change-name=1:"RouterOS Boot" --attributes=1:set:2 --new=2::-0 --typecode=2:8300 --change-name=2:"RouterOS" --gpttombr=1:2 /dev/sda
-dd if=/dev/sda of=/tmp/pt.bin bs=1 count=66 skip=446
-echo -e "\x80" | dd of=/tmp/pt.bin  bs=1 count=1  conv=notrunc
-dd if=/dev/zero of=/dev/sda  bs=1 count=512 conv=notrunc
-sgdisk --clear --set-alignment=2 --new=1::+32M --typecode=1:8300 --change-name=1:"RouterOS Boot" --attributes=1:set:2 --new=2::-0 --typecode=2:8300 --change-name=2:"RouterOS" /dev/sda
-wget -O /tmp/mbr.bin https://raw.gitmirror.com/elseif/MikroTikPatch/main/mbr.bin
-dd if=/tmp/mbr.bin of=/dev/sda  bs=1 count=446 conv=notrunc
-dd if=/tmp/pt.bin of=/dev/sda  bs=1 count=66 seek=446 conv=notrunc
-sync
-mkfs.vfat -n "Boot" /dev/sda1
-mkfs.ext4 -F -L "RouterOS"  -m 0 /dev/sda2
-mkdir -p /tmp/{boot,routeros}
-mount -o loop,rw /dev/sda1  /tmp/boot
-mkdir -p  /tmp/boot/{BOOT,EFI/BOOT}
-wget -O /tmp/boot/EFI/BOOT/BOOTX64.EFI https://hub.gitmirror.com/https://github.com/elseif/MikroTikPatch/releases/download/7.15.2/BOOTX64.EFI
-extlinux --install  -H 64 -S 32 /tmp/boot/BOOT
-echo -e "default system\nlabel system\n\tkernel /EFI/BOOT/BOOTX64.EFI\n\tappend load_ramdisk=1 root=/dev/ram0 quiet" > /tmp/boot/BOOT/syslinux.cfg
-umount /tmp/boot
-mount -o loop,rw /dev/sda2  /tmp/routeros
-mkdir -p /tmp/routeros/{var/pdb/{system,option},boot,rw}
-wget -O /tmp/routeros/var/pdb/option/image https://hub.gitmirror.com/https://github.com/elseif/MikroTikPatch/releases/download/7.15.2/option-7.15.2.npk
-wget -O /tmp/routeros/var/pdb/system/image https://hub.gitmirror.com/https://github.com/elseif/MikroTikPatch/releases/download/7.15.2/routeros-7.15.2.npk
-umount /tmp/routeros
+curl -# -L  https://github.com/elseif/MikroTikPatch/releases/download/7.19.1/chr-7.19.1-legacy-bios.img.zip -o /tmp/chr.img.zip  && cd /tmp && \
+gunzip -c chr.img.zip > chr.img  && \
+STORAGE=`lsblk | grep disk | cut -d ' ' -f 1 | head -n 1` && \
+echo STORAGE is $STORAGE && \
+ETH=`ip route show default | sed -n 's/.* dev \([^\ ]*\) .*/\1/p'` && \
+echo ETH is $ETH && \
+ADDRESS=`ip addr show $ETH | grep global | cut -d' ' -f 6 | head -n 1` && \
+echo ADDRESS is $ADDRESS && \
+GATEWAY=`ip route list | grep default | cut -d' ' -f 3` && \
+echo GATEWAY is $GATEWAY && \
+sleep 5 && \
+dd if=chr.img of=/dev/$STORAGE bs=4M oflag=sync && \
+echo "Ok, reboot" && \
+echo 1 > /proc/sys/kernel/sysrq && \
+echo b > /proc/sysrq-trigger