墟

Forget about ActivePython or stock installation. Use Miniconda is much easier.http://conda.pydata.org/miniconda.html

1、开启自动更新2、禁用 Java Applet 插件设置参考 Google Docs 文档

目标：快速建立环境用语测试 deb 包安装 / web 应用部署。可参考 https://github.com/wolf0403/lvmvm 的 README 基础环境：Ubuntu Natty (11.04) server. 文件系统：测试环境的快速部署依赖 LVM (Logical Volume Management) 。安装宿主系统方法不限，留足够硬盘

Ubuntu Natty (11.04), debootstrap-ed chroot environmentRunning most commands would receive the following warning message:perl: warning: Setting locale failed.perl: warning: Please check that yo

Environment:Ubuntu 8.04 server LTS in VMwarePartitioned with installation guide, whole with LVMExtra empty virtual disk 8GB added as second SCSI device Steps: 1. Partition the new disk:

VirtualBox 虚拟 NAT 网络的限制与解决方法。

无数人写过 blog / post 关于这个问题，但我还是又重新解决了一遍。先公布答案。 1、MySQLdb 连接类型conn = MySQLdb.connect(..., use_unicode = True, charset = "utf8",)  2、cursor.fetchall() 得到的字符串 typeof() 得到 ，所以要串接，要全部使用 unicodefo

Now launching Advanced Linux Programming zh_CN wiki for publishing, sharing and further developing the great book for Linux/C beginers. Please visit at http://wwwolf.3322.org/tracs/alp 为进一步完善翻译、

ryan@ubuntu-server:~$ uptime 01:25:05 up 48 days, 4:24, 1 user, load average: 0.11, 0.12, 0.09 Will be shutdown in prior to power outage on Monday.

中国Web Server QZHTTP极速上升- 新闻Linux时代- 开源、自由、共享 ...中国Web Server QZHTTP极速上升- 新闻新闻Linux 技术文档.linux.chinaunix.net/news/2009/02/25/1063236.shtml - 23小时前 - 类似网页中国Web Server QZHTTP极速上升- 开源业界与评论- Linu

http://news.youkuaiyun.com/n/20081111/120734.html唔，前十名看起来是：Red Hat，11.2%；Novell，8.9%；IBM，8.3%；Intel，4.1%；Linux基金会，2.6%；独立Linux顾问公司，2.5%；SGI，2.0%；MIPS Technology，1.6%；Oracle，1.3%和MontaVista，1.2%。就在这前十名底下，将发现

PAM Authentication with program supplied username / password pair.In cases like "login" and "sudo", the use of PAM involves asking user for password on the terminal. This is a feature provided by the

Building a bunch of servers isnt even in my imaginary before but im running a couple now and looking forward to expand them, thanks to virtualization technology.p.s. Billy used to say  that I writ

# sites-enabled/siteNameVirtualHost *:80 ServerName site.com# sites-enabled/proxy #ServerName not important ProxyRequests OnWhen using Debian style sites-enabled, make sure Pro

#!/bin/bashOD=outputURL=http://www.ug.it.usyd.edu.au/~ygao6590/# T: threadst=( 1 2 3 )#t=( 1 )# F: filesf=( "50k" "100k" "200k" )#f=( "50k" )# S: timeout (secs)s=( 5 10 15 20 25 )#s=( 5 )

Group reflections and conclusionLimitations in terms of functionalityThe app is able to perform its main tasks to deliver and discover information on campus. However there are still limitation

OS X 10.8 by default comes with python 2.7.2.For using iPython Notebook (http://ipython.org/notebook.html) I usually install anaconda (http://continuum.io/downloads) in my home dir right away so I h

When using PostgreSQL and POINT type / GIST indexing for location queries, "LIMIT" clause is required for correctly utilizing the GIST index.CREATE TABLE points ( name varchar(40) NOT NULL, ty

Building an WSGI app with Flask with LinkedIn API access. The app runs fine in local dev environment but when put behind Nginx reverse proxy with HTTPS, all redirections and LinkedIn callbacks fails w

class count1: def GET(self): s.session.count += 1 return str(s.session.count)class count2: def GET(self): s.session.count += 1 yield str(s.session.count)With above two handlers diffe

Q: How to test session based scenarios (login, logout, @authenticated)?A: Need to handle cookie: parse Set-Cookie response headers and provide Cookie request headers.https://gist.github.com/wolf04

Answered one question regarding how to setup Django / PHP to run on top / behind Apache frontend. I did the setup of Django using proxy_scgi. There are other ways like mod_wsgi but using proxy_* at

Value of one of the thread-argument variable has changed at some place, which is only detected when the program crashes.(gdb) p *a$7 = { host = 0x0, port = 0, h_ent = 0x7fff5fbf6f10, r

So recently I've been writing HTTP/1.1 client side protocol parsing stuff. Twice.When I went through RFC2616, even shallow like I was doing (merely picking bits that I need to know to get my stuff

Building an HTTP client for some performance testing purposes. Multiple sockets, I/O multiplexing, two threads. One sender pushing pipelined requests and one receiver dragging all server responses.

Tornado is known for its capability of handling concurrent connections with help of OS event triggering mechanisms like epoll and kqueue.Web.py is a web framework for Python. It relies on other serv

WARNING: BAD PRACTICE!Here we go.Edit /etc/pam.d/common-passwordfind the linepassword [success=1 default=ignore] pam_unix.so obscure sha512The "obscure" option here disables sim

Group reflections and conclusionLimitations in terms of structure, design, implementationThe design and structure of this app generally fulfills its requirements, capable of providing informatio

#!/bin/sh[ -z "$HOST" ] && HOST=localhostIP="`ping -c1 $HOST | egrep -o ([0-9]{1,3}.){3}([0-9]{1,3}) | head -n1`"# 清除前次设置的 NAPTiptables -t nat --flush# 将本机80映射到之前 $HOST 指定的服务器 80 上/sbin/iptables -

这几天在 Laptop XP 和 Ubuntu server 上各装了 VMware Server。。实在是很酷的东西。不知道还有谁记得当年的 coLinux 没——或者这个东西现在还很流行，只是我不知道？VMware Server 至少已经非常简单地达到了我当初用 coLinux 没有做到的事情。 ——同时使用两个系统。不用 VMware Player 的原因： VMwar

34.9 线程与信号处理-- 函数： int pthread_sigmask (int HOW, const sigset_t *NEWMASK, sigset_t *OLDMASK)pthread_sigmask 依照 HOW 和 NEWMASK 的指示改变调用线程的信号掩码（signal mask）。如果 OLDMASK 不是 NULL，则之前的信号掩码将被保存在 OLDMASK 指向的位

34.2 线程属性线程具有一系列属性；这些属性可以在线程创建的时候指定。只需要创建并填充一个 pthread_attr_t 类型的线程属性对象 ATTR，并将其作为第二个参数传递给 pthread_create 就可以指定新创建线程的属性。如传递 NULL 作为第二个参数，则等价于传递一个所有属性均为默认值的属性对象。仅当创建新线程的时候线程属性对象才被参考。同一个线程对象可用于创建多个线

mmap vs read : read requires one syscall for each operation while mmap doesnt.

目前本人熟悉的、特定适用于父子进程之间的 IPC 方式有三种：pipe、匿名 FIFO（Unix domain socket）和共享内存。现在将使用方法总结一下。1、管道Pipe 的特点：单向传递。在管道创建的时候，数据只能从读处读，从写处写，属于单向流动。相关文章已经太多了，小弟不多废话，贴一段代码提示记忆。CODE:[Copy to clipboard]$ cat -n pipe.c     

先看看状况（小心头疼）client.c 编译得到 client；在 client 的 main 中用 dlopen( "./liba.so", RTLD_LAZY|RTLD_GLOBAL) 打开 liba.so，并调用 liba.so 中的 start 函数；在 liba.so 的 start 函数中通过 dlopen( 0, RTLD_GLOBAL|RTLD_LAZY ) 得到的句柄尝试调用 c

|-------|-------|-------|-------012345670123456701234567012345670       1       2       3在这个范围执行 对于值 (int)abcd 而言，在x86平台上，必须经过反序（htonl）才能得到与(int*)"abcd"相同的内存排布。Rock - 晨星 说:“byte”内还是左移，只是处理那个“溢出位”是给了

这两天复习分布式系统，顺便看了一下 Linux 下的 futex(2) 同步机制。简单来说，futex(2) 是一个新的同步机制，在作用方面与一般的 mutex 比较相似。使用 futex(2) 进行同步的两个执行体必须通过一段共享的内存空间关联起来——这段内存空间可以具有相同或者不同的进程中地址，只要它们映射到同一块核心中内存地址即可——因此，线程和进程（通过 sysvshm 关联）都可以利用

包含了原书第一、第二章的内容，修复了少量错误。欢迎提出宝贵意见或建议。新下载地址：http://www.lidaibin.com/alp1.pdf

Project Announcement项目通告Project: LibPML, the Protocol Markup Language Library项目名: LibPML, 协议标记语言与解析库Motivation: Network applications are growing rapidly nowadays. By the same way, the protocol family

$ cat 1.cvoid *malloc ( unsigned sz ) { return 0; }$ gcc -shared 1.c -o libmyc.so$ cat 2.c#include int main () {  void *p = malloc ( 3 );  return p == NULL;}$ gcc 2.c$ ./a.out$ echo $?0$ LD_PRELOAD="l