qvoid

## mediascan.py
#!/usr/bin/python3
# -*- coding: UTF-8 -*-

import subprocess
import sys
import os
from os import listdir
import os.path
from os.path import isfile, join
import time

## convert_avcc_to_annexb.c
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <stdint.h>

#define AVCC_HEADER_OFFSET 4
#define AVCC_NALU_LEN_UINT_SIZE_MINUS_1_MASK 0x3
#define AVCC_HEADER_SPS_CNT_OFFSET 5
#define SPS_CNT_MASK 0x1f
#define START_CODE_SIZE 4

## image_magic
## resize
```shell
convert dragon_sm.gif    -resize 64x64  resize_dragon.gif
```

## resize with ignoring sapect Raio
```shell
convert dragon_sm.gif    -resize 64x64\!  exact_dragon.gif
```

## simplenotes_to_markdown_file.py
#!/usr/bin/python3
# -*- coding: UTF-8 -*-

import json
import yaml
import datetime
import os.path
import os

with open('./notes.json', 'r') as json_file:

## android_input
## Reference
[Google doc](https://developer.android.com/reference/android/view/KeyEvent)
[stackoverflow](https://stackoverflow.com/questions/7789826/adb-shell-input-events)

## Keycode

```
0 -->  "KEYCODE_UNKNOWN"
1 -->  "KEYCODE_MENU"
2 -->  "KEYCODE_SOFT_RIGHT"

## upgrade_package.md

      
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list packages upgradable

sudo apt update
sudo apt list --upgradable


upgrade a specific package

sudo apt-get install --only-upgrade 


## launch.json
{
    // Use IntelliSense to learn about possible attributes.
    // Hover to view descriptions of existing attributes.
    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
    "version": "0.2.0",
    "configurations": [
        {
            "type": "gdb",
            "request": "attach",
            "name": "Attach to arm64 linux",

## xkeyboard
#!/bin/bash

INNER_KEYBOARD_ID=$(xinput list | grep "AT Translated Set 2 keyboard" | cut -f 2 | cut -d "=" -f 2)
INNER_KEYBOARD_STATUS=$(xinput list | grep "AT Translated Set 2 keyboard" | cut -f 3 | sed 's/\[//' |awk '{print $1}')
if [ $INNER_KEYBOARD_STATUS = "slave" ]; then
    echo "floating..."
    xinput float $INNER_KEYBOARD_ID
elif [ $INNER_KEYBOARD_STATUS = "floating" ]; then
    echo "reattach..."
    xinput reattach $INNER_KEYBOARD_ID 3

## rm_reverse
## use grep

```
rm `ls | grep -v "file_name_wanted_to_be_kept"`
```

## screenrecord
screenrecord --size 1280x720 --bit-rate 3000000 --time-limit 10 /sdcard/demo.mp4
	#!/usr/bin/python3
	# -- coding: UTF-8 --

	import subprocess
	import sys
	import os
	from os import listdir
	import os.path
	from os.path import isfile, join
	import time
	#include <stdio.h>
	#include <string.h>
	#include <stdlib.h>
	#include <stdint.h>

	#define AVCC_HEADER_OFFSET 4
	#define AVCC_NALU_LEN_UINT_SIZE_MINUS_1_MASK 0x3
	#define AVCC_HEADER_SPS_CNT_OFFSET 5
	#define SPS_CNT_MASK 0x1f
	#define START_CODE_SIZE 4
	## resize
	```shell
	convert dragon_sm.gif -resize 64x64 resize_dragon.gif
	```

	## resize with ignoring sapect Raio
	```shell
	convert dragon_sm.gif -resize 64x64\! exact_dragon.gif
	```
	#!/usr/bin/python3
	# -- coding: UTF-8 --

	import json
	import yaml
	import datetime
	import os.path
	import os

	with open('./notes.json', 'r') as json_file:
	## Reference
	[Google doc](https://developer.android.com/reference/android/view/KeyEvent)
	[stackoverflow](https://stackoverflow.com/questions/7789826/adb-shell-input-events)

	## Keycode

	```
	0 --> "KEYCODE_UNKNOWN"
	1 --> "KEYCODE_MENU"
	2 --> "KEYCODE_SOFT_RIGHT"
	{
	// Use IntelliSense to learn about possible attributes.
	// Hover to view descriptions of existing attributes.
	// For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
	"version": "0.2.0",
	"configurations": [
	{
	"type": "gdb",
	"request": "attach",
	"name": "Attach to arm64 linux",
	#!/bin/bash

	INNER_KEYBOARD_ID=$(xinput list \| grep "AT Translated Set 2 keyboard" \| cut -f 2 \| cut -d "=" -f 2)
	INNER_KEYBOARD_STATUS=$(xinput list \| grep "AT Translated Set 2 keyboard" \| cut -f 3 \| sed 's/\[//' \|awk '{print $1}')
	if [ $INNER_KEYBOARD_STATUS = "slave" ]; then
	echo "floating..."
	xinput float $INNER_KEYBOARD_ID
	elif [ $INNER_KEYBOARD_STATUS = "floating" ]; then
	echo "reattach..."
	xinput reattach $INNER_KEYBOARD_ID 3
	## use grep

	```
	rm `ls \| grep -v "file_name_wanted_to_be_kept"`
	```