sulincix

Android 13 battery

adb shell device_config put activity_manager bg_auto_restrict_abusive_apps 1
adb shell device_config put activity_manager bg_current_drain_auto_restrict_abusive_apps_enabled 1

dexopt

adb shell cmd package bg-dexopt-job

sulincix

#include <gtk/gtk.h>

typedef struct _a {
    gchar* msg;
    gint num;
} data;

void button_event(GtkWidget *widget, gpointer f) {
  data *d = f;
  g_print("%s %d\n", d->msg, d->num);

sulincix

C vs C++

Write Hello World

C++ version

#include <iostream>
int main(){
    std::cout << "Hello World" << std::endl;
}

sulincix

#!/bin/bash
# Note: This is experimental script.
rm -f *.c *.so*
genlib(){
    file="$1"
     nm --dynamic $file | grep -v " U " | grep -v " w " | cut -f3 -d" " | sed "s/.*/void* &(){}/g" > "$(basename $file.c)"
     gcc -o $(basename $file) "$(basename $file.c)" -shared -nostdlib
}

#genlib /usr/lib/libKUserFeedbackCore.so.1

sulincix

/* Compile:
       gcc -o wait_for_x11 wait_for_x11.c -lX11
  Run:
      ./wait_for_x11 :0
*/
#include <X11/Xlib.h>
#include <unistd.h>

int main(int argc, char *argv[]){
    Display *dpy;

sulincix

// Compile with:
// gcc -o main main.c -nostdlib -O0

int print(char* msg, int len){
    /*
    rax = 1 (write)
    rdi = 1 (stdout)
    rsi = message
    rdx = length
    syscall

sulincix

modprobe bonding
ip link set eth0 down
ip link set eth1 down
ip link add bond0 type bond mode 802.3ad
ip link set eth0 master bond0
ip link set eth1 master bond0
ip link set bond0 up
ip addr add 42.42.42.5/24 dev bond0
ip route add default via 42.42.42.1 dev bond0

sulincix

qemu-system-aarch64 \
    -m 1024 \
    -M raspi3b \
    -kernel kernel8.img \
    -dtb bcm2710-rpi-3-b-plus.dtb \
    -sd devuan.img \
    -append "console=ttyAMA0 root=/dev/mmcblk0p2 rw rootwait rootfstype=ext4" \
    -device usb-net,netdev=net0 \
    -netdev user,id=net0,hostfwd=tcp::2222-:22 \
    -usb -device usb-mouse -device usb-kbd \

sulincix

#!/usr/bin/python3
import gi
gi.require_version("Gtk","3.0")
from gi.repository import Gtk
icon = Gtk.StatusIcon.new_from_icon_name("gtk-yes")
Gtk.main()

sulincix

# create rootfs directory
set -ex
mkdir /rootfs
cd /rootfs
# download rootfs
repo="https://dl-cdn.alpinelinux.org/alpine/edge/releases/$(uname -m)/"
archive=$(wget -O - $repo | grep "minirootfs" | grep "tar.gz<" | sort -V | tail -n1  | cut -f 2 -d "\"")
wget -O alpine-rootfs.tar.gz $repo/$archive
# extract rootfs
tar -xf alpine-rootfs.tar.gz