转载请注明出处，未经同意严禁用于商业用途

功能：从交换机输出中读取各个端口的速率。

交换机上sh inter输出如下：

FastEthernet0/47 is up, line protocol is up (connected)
  Hardware is Fast Ethernet, address is 0018.7397.eeb1 (bia 0018.7397.eeb1)
  MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  Full-duplex, 100Mb/s, media type is 10/100BaseTX
  input flow-control is off, output flow-control is unsupported
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input 29w3d, output 00:00:01, output hang never
  Last clearing of 'show interface' counters never
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: fifo
  O

走tc的nfmark不行，到/usr/src/linux/net/sched/cls_fw.c

中的代码fw_classify中时发现nfmark是0，所以得另外添加一个成员变量比如a

然后在fw_classify中

将a赋值给nfmark就可以了

本文链接: http://www.php-oa.com/2009/06/23/linux_tc.html

公司一台服务器，网络环境太高，那台服务器和源服务器连接下载，就跑到400M-500M，为了控制一下，所以研究了一下TC。来做流量控制.给他控制到小点，不要让这一台占了所有的网络。TC很是强大啊,很多所谓的硬件路由器，都是基于这个做的。

TC介绍

在linux中，TC有二种控制方法CBQ和HTB.HTB是设计用来替换CBQ的。它是一个层次式的过滤框架.

TC包括三个基本的构成块： 队列规定qdisc（queueing discipline ）、类（class）和分类器（Classifiers）

队列(queueing discipline):用来实现控制网络的收发速度.通过队列,linux可以将网络数据包缓存起来,然后根据用户的设置,在尽量不中断连接(如 TCP)的

转：http://student.csdn.net/space.php?uid=91306&do=blog&id=7605

写的很明晰，对于我这样写了4年代码的人来说，看了之后仍有一种醍醐灌顶之感，敬佩！

Find a road to avoid snakes with C/C++ (This program should be compiled
and tested with C/C++ compiler)

Frank Buck wishes to cross a 1000x1000 square field. A number
of snakes are on the field at various positions, and each snake can
strike a particular distance in any direction. Can Buck make the
trip without being bitten?

Assume that the southwest corner of the field is at (0,0) and
the northwest corner at (0,1000). The input consists of a line
containing n <= 1000, the number of snakes. A line follows
for each snake, containing three real numbers: the (x,y) location
of the snake and its strike distance. The snake will bite anything
that passes closer than this distance from its location.

Buck must enter the field somewhere between the southwest and northwest
corner and must leave somewhere between the southeast and northeast
corners.
If Buck can complete the trip, giv

多学知识，多积累，总有一天每个学到的知识点都会被联通起来，构成一幅美丽的图画！！！

and now, netfilter, netlink, ice, mysql, php and jpgraph are connected..........

著作权私有，如有转载，请注明出处！

参考文章:
http://bbs2.chinaunix.net/thread-708846-1-1.html

实验中的oracle的安装目录是/opt/oracle

首先需要修改 dbstart脚本
打开文件/opt/oracle/product/10g/bin/dbstart
(1):
把
ORATAB=/etc/oratab
改为
RATAB=/opt/oracle/product/10g/install/oratab
(注意 RATAB=/opt/oracle/product/10g/install/oratab是我 find /opt/oracle -name oratab搜到的)
(2)
把文件
/opt/oracle/product/10g/install/oratab
中的内容(ge01为实例名称)
ge01:/opt/oracle/product/10g:N
改为
ge01:/opt/oracle/product/10g:Y
保存
(3)修改文件dbstart中的
ORACLE_HOME_LISTNER=/ade/vikrkuma_new/oracle
为
ORACLE_HOME_LISTNER=/opt/oracle/product/10g
保存退出

其次，在/opt/orac

转载请著名出处，用于商业用途须经过作者同意

入库时如果字符串中含有单引号',SQL会认为是转义字符，而把'去掉，并且报告后面的字符错误

解决办法是，在每个单引号后面添加一个单引号，这样第一个单引号去掉，第二个保留，入库中的数据

正好是我们期望入库的。写了个小函数来实现这个功能。

#include <stdio.h>
#include <string.h>

char* replace_str(char * strData)
{
        static char szRet[2048] = {0};
        const char* p = strData;
        char* pFind = NULL;
        memset(szRet, 0, 2048);
        while((pFind = strchr(p, '\'')))
        {