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

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

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

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

#!/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

#!/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/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

#!/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

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

gaoyifan

import ipaddress

def hex_to_cidr(hex_str):
    i = 0
    while i < len(hex_str):
        # The first byte is the mask
        mask = int(hex_str[i:i+2], 16)
        i += 2

        # Calculate how many bytes the subnet will occupy