gaoyifan

import cv2
import pyqrcode
import numpy as np
import io

# Set the width, height and frame rate of the video
width, height, fps = 512, 512, 10

# Create a video writer object, using FFmpeg

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#!/usr/bin/env bash
set -xe

apt install -y build-essential git gcc-arm-none-eabi bison flex device-tree-compiler bc debootstrap

BASE=${BASE:-$(mktemp -d)}

cd $BASE
pwd
git clone https://github.com/ARM-software/arm-trusted-firmware.git

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#! /usr/sbin/nft -f

chain tc-wan {
	# check default priority
	mark & 0xff0 == 0x130 ip dscp set af22 return

	# real-time application
	## Dota2
	udp dport 27000-27200 \
	meta mark set mark & 0xfffff00f ^ 0x110 ip dscp set af41 return

gaoyifan

#!/bin/sh

# example: ./ramdom-ipv6.sh 2402:f000:1::/48 166.111.21.1

table_id=436298364
ipv6_cidr=$1
ipv4_addr=$2

ipv6_prefix=$(echo $ipv6_cidr | cut -d / -f 1)
ipv6_sublen=$(echo $ipv6_cidr | cut -d / -f 2)

gaoyifan

#!/usr/bin/env bash

# require: git version > 2.3
# require: `db/letsencrypt` existed in git repo

if [[ -z "$CERTBOT_DOMAIN" ]] || [[ -z "$CERTBOT_VALIDATION" ]]; then
    echo '$CERTBOT_DOMAIN and $CERTBOT_VALIDATION environment variables required.'
fi

source /etc/letsencrypt/dns-auth.conf

gaoyifan

alicdnkk.miaopai.com                         2    1.2    1.2
s3-static.lufaxcdn.com                       2    1.2    2.4
ali-ind-cdn.kwai.net                         2    1.2    3.6
c3.xinstatic.com                             2    1.2    4.8
cdn.scdng.com                                2    1.2    6.1
jzsite.cdnpe.com                             2    1.2    7.3
qncdnbb.miaopai.com                          2    1.2    8.5
aliyuncdn-monitortestp-res.mzres.com         2    1.2    9.7
ottvideogs.hifuntv.com                       2    1.2   10.9
wylivetest.cdnpe.com                         2    1.2   12.1

gaoyifan

Homebrew build logs for sjk on macOS 10.12.4
Build date: 2017-05-05 23:32:08

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1.0.1.0/24
1.0.2.0/23
1.0.8.0/21
1.0.32.0/19
1.1.0.0/24
1.1.2.0/23
1.1.4.0/22
1.1.9.0/24
1.1.10.0/23
1.1.12.0/22

gaoyifan

User Mode Linux on Debian Jessie

host kernel version: 3.16.36-1+deb8u2

target kernel version: 4.9-rc5

Build UML kernel

Preparation

gaoyifan

[    0.573915] pci 0000:00:1a.0: reg 0x20: [io  0x9e80-0x9e9f]
[    0.574011] pci 0000:00:1a.0: System wakeup disabled by ACPI
[    0.574059] pci 0000:00:1a.1: [8086:3a38] type 00 class 0x0c0300
[    0.574098] pci 0000:00:1a.1: reg 0x20: [io  0x9e20-0x9e3f]
[    0.574194] pci 0000:00:1a.1: System wakeup disabled by ACPI
[    0.574240] pci 0000:00:1a.2: [8086:3a39] type 00 class 0x0c0300
[    0.574280] pci 0000:00:1a.2: reg 0x20: [io  0x9dc0-0x9ddf]
[    0.574373] pci 0000:00:1a.2: System wakeup disabled by ACPI
[    0.574429] pci 0000:00:1a.7: [8086:3a3c] type 00 class 0x0c0320
[    0.574449] pci 0000:00:1a.7: reg 0x10: [mem 0xfaaf6000-0xfaaf63ff]