| # source : http://code.google.com/p/natvpn/source/browse/trunk/stun_server_list | |
| # A list of available STUN server. | |
| stun.l.google.com:19302 | |
| stun1.l.google.com:19302 | |
| stun2.l.google.com:19302 | |
| stun3.l.google.com:19302 | |
| stun4.l.google.com:19302 | |
| stun01.sipphone.com | |
| stun.ekiga.net |
| #!/usr/bin/awk -f | |
| # Coded by: Vladislav Grigoryev <vg[dot]aetera[at]gmail[dot]com> | |
| # License: GNU General Public License (GPL) version 3+ | |
| # Description: Select wireless channel automatically | |
| function get_iwphy() { | |
| cmd = "iw phy" | |
| while(cmd | getline) { | |
| if($0 ~ /^\s*Wiphy\s/) |
| Vector = {} | |
| Vector.__index = Vector | |
| function Vector.__add(a, b) | |
| if type(a) == "number" then | |
| return Vector.new(b.x + a, b.y + a) | |
| elseif type(b) == "number" then | |
| return Vector.new(a.x + b, a.y + b) | |
| else | |
| return Vector.new(a.x + b.x, a.y + b.y) |
opkg install kmod-usb-core kmod-usb-ohci kmod-usb2 kmod-usb-storage e2fsprogs fdisk usbutils mount-utils block-mount kmod-fs-ext4 kmod-fs-vfat kmod-nls-utf-8 kmod-nls-cp437 kmod-nls-iso8859-1
rebootblkid, run opkg update && opkg install blkid;block.sh to directory /lib/functions;10-mount and 20-swap to directory /etc/hotplug.d/block;logread -f command then plug in a USB stick to test.
| #!/bin/bash | |
| # (The MIT License) | |
| # | |
| # Copyright (c) 2015 Jan Broer | |
| # | |
| # Permission is hereby granted, free of charge, to any person obtaining a copy | |
| # of this software and associated documentation files (the "Software"), to deal | |
| # in the Software without restriction, including without limitation the rights | |
| # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
libuv 和 libev ，两个名字相当相近的 I/O Library，最近有幸用两个 Library 都写了一些东西，下面就来说一说我本人对两者共同与不同点的主观表述。
高性能网络编程这个话题已经被讨论烂了。异步，异步，还是异步。不管是 epoll 也好，kqueue 也罢，总是免不了异步这个话题。
libuv是异步的，libev是同步的多路IO复用。
libev 是系统I/O复用的简单封装，基本上来说，它解决了 epoll ，kqueuq 与 select 之间 API 不同的问题。保证使用 livev 的 API 编写出的程序可以在大多数 *nix 平台上运行。但是 libev 的缺点也是显而易见，由于基本只是封装了 Event Library，用起来有诸多不便。比如 accept(3) 连接以后需要手动 setnonblocking。从 socket 读写时需要检测 EAGAIN 、EWOULDBLOCK 和 EINTER 。这也是大多数人认为异步程序难写的根本原因。
libuv 则显得更为高层。libuv 是 joyent 给 Node 做的一套 I/O Library 。而这也导致了 libuv 最大的特点就是处处回调。基本上只要有可能阻塞的地方，libuv 都使用回调处理。这样做实际上大大减轻了程序员的工作量。因为当回调被 call 的时候，libuv 保证你有事可做，这样 EAGAIN 和 EWOULDBLOCK 之类的 handle 就不是程序员的工作了，libuv 会默默的帮你搞定。
| #include <errno.h> | |
| #include <fcntl.h> | |
| #include <linux/videodev2.h> | |
| #include <stdint.h> | |
| #include <stdio.h> | |
| #include <string.h> | |
| #include <sys/ioctl.h> | |
| #include <sys/mman.h> | |
| #include <unistd.h> | |
| #include <opencv2/core/core.hpp> |
| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset="utf-8"> | |
| <title>JS Bin</title> | |
| <style id="jsbin-css"> | |
| p{font-size:15px; | |
| line-height:140%; | |
| color:green; | |
| } |
Build VyOS image image on Debian Jessie environment.
Install Debian jessie.
| <?php | |
| /* | |
| * dl-file.php | |
| * | |
| * Protect uploaded files with login. | |
| * | |
| * @link http://wordpress.stackexchange.com/questions/37144/protect-wordpress-uploads-if-user-is-not-logged-in | |
| * | |
| * @author hakre <http://hakre.wordpress.com/> | |
| * @license GPL-3.0+ |