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#!/usr/bin/env python

import socket
import os
import struct

if getattr(socket, "NETLINK_CONNECTOR", None) is None:
    socket.NETLINK_CONNECTOR = 11

CN_IDX_PROC = 1

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#!/bin/sh
# this script is only written for gentoo
# if you're using other distro, modify part of it as needed
#
# please run this script run once, as su

sh dns.sh
iptables-save > /etc/iptables-local
cat > /etc/local.d/iptables-restore <<<EOF
#!/bin/sh

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# This is an startup script example, how IPv6 should 
# looks like, if not you will get some seriously 
# problems.
# Some options may not work on your OS. 

# ICMPv6 Stastics (optional)
# icmpv6_stats

# Optional may not work on all systems
ipset flush dns6

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ACM大量习题题库 

ACM大量习题题库 
现在网上有许多题库，大多是可以在线评测，所以叫做Online Judge。除了USACO是为IOI准备外，其余几乎全部是大学的ACM竞赛题库。

USACO

http://ace.delos.com/usacogate

美国著名在线题库，专门为信息学竞赛选手准备

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Moved to git repository: https://github.com/denji/nginx-tuning

NGINX Tuning For Best Performance

For this configuration you can use web server you like, i decided, because i work mostly with it to use nginx.

Generally, properly configured nginx can handle up to 400K to 500K requests per second (clustered), most what i saw is 50K to 80K (non-clustered) requests per second and 30% CPU load, course, this was 2 x Intel Xeon with HyperThreading enabled, but it can work without problem on slower machines.

You must understand that this config is used in testing environment and not in production so you will need to find a way to implement most of those features best possible for your servers.

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#!/bin/bash
echo ". {" > Corefile
echo "  forward . 208.67.222.222:443 208.67.222.222:5353 208.67.220.220:443 208.67.220.220:5353 127.0.0.1:5301 127.0.0.1:5302 127.0.0.1:5303  {" >> Corefile
china=`curl https://cdn.jsdelivr.net/gh/felixonmars/dnsmasq-china-list/accelerated-domains.china.conf -s | while read line; do awk -F '/' '{print $2}' | grep -v '#' ; done |  paste -sd " " -`
apple=`curl https://cdn.jsdelivr.net/gh/felixonmars/dnsmasq-china-list/apple.china.conf -s | while read line; do awk -F '/' '{print $2}' | grep -v '#' ; done |  paste -sd " " -`
google=`curl https://cdn.jsdelivr.net/gh/felixonmars/dnsmasq-china-list/google.china.conf -s | while read line; do awk -F '/' '{print $2}' | grep -v '#' ; done |  paste -sd " " -`
echo "  except $china $apple $google" >> Corefile
echo "  }" >> Corefile
echo "  proxy . 116.228.111.118 180.168.255.18" >> Corefile
echo "  log" >> Corefile

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<?php

//php gd-gif.php image.gif gd-image.gif 

$gif = imagecreatefromgif($argv[1]);
imagegif($gif, $argv[2]);
imagedestroy($gif);
?>