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std::string截取字符串，截取ip:port - c++1y / stl - 清泛IT社区，为创新赋能！
std::string ip("127.0.0.1:8888");
int index = ip.find_last_of(':');
// 获取ip
ip.substr(0, index).c_str();
// 获取port
ip.substr(index + 1).c_str();
Validating IPv4 addresses with regexp
I've been trying to get an efficient regex for IPv4 validation, but without much luck. It seemed at one point I had had it with (25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?(\.|$)){4} , but it produces some strange results:
...
对外网用户的squid代理+认证 - 更多技术 - 清泛网 - 专注C/C++及内核技术
....6-STABLE12 。
服务器及网络信息：
外网网卡：em0；外网ip：221.6.117.50/255.255.255.240
内网网卡：em1；内网ip：128.0.0.4/255.255.252.0
架设过程：
一、FreeBSD的安装
1、最小化安装FreeBSD6.2RELEASE
2、配置内核：
jiulongproxynew# cd /usr/src/...
How to find SQL Server running port?
...
GO
xp_readerrorlog 0, 1, N'Server is listening on'
GO
http://www.mssqltips.com/sqlservertip/2495/identify-sql-server-tcp-ip-port-being-used/
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Add Keypair to existing EC2 instance
...eating these steps until you have it working.
Note: If you had an Elastic IP address assigned to instance A when you stopped it, you’ll need to reassociate it after starting it up again.
Remember! If your instance B was temporarily started just for this process, don’t forget to terminate it no...
How does the socket API accept() function work?
The socket API is the de-facto standard for TCP/IP and UDP/IP communications (that is, networking code as we know it). However, one of its core functions, accept() is a bit magical.
...
一体化的Linux系统性能和使用活动监控工具–Sysstat - 更多技术 - 清泛网 -...
...ersion 11.0.0
(C) Sebastien Godard (sysstat orange.fr)
在Linux系统中更新Sysstat
默认情况下，编译安装将会把软件包放在 /usr/local”目录。所以，所有的二进制/公共文件都会被安装在 “/usr/local/bin”目录。如果你已经安装了sysstat软件包，...
数据实时刷新技术，DDE or RTD？ - 其他 - 清泛IT社区，为创新赋能！
从Excel 2002开始，Excel引入了一种新的查看和更新实时数据的机制，即real-time data简称RTD函数，他是一种Push-Pull的方式，及在需要更新数据的时候，RTD给Excel Push一个消息说要更新数据，Excel在收到消息后主动拉取Pull新的数据。RTD函...
【解决】Win10/Win11家庭版不支持远程桌面？如何开启远程桌面？ - 操作系统...
...e中下载最新的版本：RDP Wrapper Library v1.6.2，此版本已停止更新，后续更新只需要更新rdpwrap.ini即可，安装步骤：
1.解压后，先管理员权限执行 install.bat.
2.然后管理员权限执行 RDPConf.exe.
3.出现下图中绿色的部份，说明...
Best way to simulate “group by” from bash?
Suppose you have a file that contains IP addresses, one address in each line:
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