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#!/usr/bin/env python3
# -*- coding: utf-8 -*-

# Author: David Manouchehri <manouchehri@protonmail.com>
# This script will always echo back data on the UDP port of your choice.
# Useful if you want nmap to report a UDP port as "open" instead of "open|filtered" on a standard scan.
# Works with both Python 2 & 3.

import socket

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ipset list | tail -n +9 - | xargs -I X vppctl glx overlay route add table 1024 X/32 acc tunnel1 1

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#!/bin/bash

logger -t "dnsmasqlivecheck" "dnsmasq live check run"

if [[ ! -f /run/dnsmasq/dnsmasq.pid ]]; then
   logger -t "dnsmasqlivecheck" "dnsmasq pid not present, restart"
   systemctl restart dnsmasq
   exit 1
fi

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比如： 



定义一个单链表，链表上一共有10个节点，每个节点是对应的数字编号（1到10），要求实现从链表尾部打印编号的程序，也即打出的结果是10到1。 

 

要求： 

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version: '3'
services:
  elasticsearch:
    image: docker.elastic.co/elasticsearch/elasticsearch:7.13.1
    restart: unless-stopped
    hostname: NODE_NAME
    ulimits:
      memlock:
        soft: -1
        hard: -1

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import sys

# choose() is the same as computing the number of combinations. Normally this is
# equal to:
#
#   factorial(N) / (factorial(m) * factorial(N - m))
#
# but this is very slow to run and requires a deep stack (without tail
# recursion).
#

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-----BEGIN RSA PRIVATE KEY-----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#!/usr/bin/env bash

# Step 1: Fill in EMAIL, TOKEN, DOMAIN and SUBDOMAIN. Your API token is here: https://www.cloudflare.com/a/account/my-account
#         Make sure the token is the Global token, or has these permissions: #zone:read, #dns_record:read, #dns_records:edit
# Step 2: Create an A record on Cloudflare with the subdomain you chose
# Step 3: Run "./ddns.sh -l" to get the zone_id and rec_id of the record you created.
#         Fill in ZONE_ID and REC_ID below
#         This step is optional, but will save you 2 requests every time you this script
# Step 4: Run "./ddns.sh". It should tell you that record was updated or that it didn't need updating.
# Step 5: Run it every hour with cron. Use the '-s' flag to silence normal output

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1. speedtest ssl cert verification issue (no local ca chain, thus need set this before make python https connection)
export PYTHONHTTPSVERIFY=0

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The shadowsocks protocol is very similar to SOCKS5 but encrypted and simpler.

Below is the structure of a shadowsocks request (sent from client-side), which is identical for both TCP and UDP connections before encrypted (or after decrypted).

+--------------+---------------------+------------------+----------+
| Address Type | Destination Address | Destination Port |   Data   |
+--------------+---------------------+------------------+----------+
|      1       |       Variable      |         2        | Variable |
+--------------+---------------------+------------------+----------+