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How do I include negative decimal numbers in this regular expression?
...9]|[12][0-9]|3[01])\D([1-9]|0[1-9]|1[012])\D(19[0-9][0-9]|20[0-9][0-9])$
IP v4:
^(\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5])\.(\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5]){3}$
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Command line for looking at specific port
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You can use the netstat combined with the -np flags and a pipe to the find or findstr commands.
Basic Usage is as such:
netstat -np <protocol> | find "port #"
So for example to check port 80 on TCP, you can do this: netstat -np TCP | find "80"
Which ends up giving the follo...
Apple Pay入华遇阻 只因BAT太受欢迎？ - 资讯 - 清泛网 - 专注C/C++及内核技术
...但如果支付宝只停留在这个层面上，永远都只是一种支付工具，很难和O2O乃至生态扯上关系。而为了拉拢上游商户，支付宝的动作主要体现在两个方面。
一是补贴，支付宝的补贴方案可谓不一而足，满减、交易抹零、抽奖等等...
千亿时代 网游走到十字路口 - 资讯 - 清泛网 - 专注C/C++及内核技术
...、同质化”的问题仍然大量存在，固然一些企业开始围绕IP做文章，研发精品重度游戏，但仍然不免在营销、付费等层面存在“捞一把快钱”的想法。“毕竟基于数亿手机游戏用户和强势发行渠道，赚钱的诱惑太大也太容易。况...
Find the host name and port using PSQL commands
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This doesn't work if you have multiple servers in the same cluster, unfortunately...
– Vitor Baptista
Mar 1 '13 at 22:57
3
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PHP mail function doesn't complete sending of e-mail
...applied to any PHP mailing system.
There are a variety of reasons your script appears to not be sending emails. It's difficult to diagnose these things unless there is an obvious syntax error. Without one you need to run through the checklist below to find any potential pitfalls you may be encounte...
How to set proxy for wget?
...omthing like this at command line can work:
export http_proxy=http://your_ip_proxy:port/
export https_proxy=$http_proxy
export ftp_proxy=$http_proxy
export dns_proxy=$http_proxy
export rsync_proxy=$http_proxy
export no_proxy="localhost,127.0.0.1,localaddress,.localdomain.com"
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How to check with javascript if connection is local host?
I want to have a check in my javascript if the page loading up is on my local machine.
12 Answers
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Sublime Text 3能用支持的插件推荐 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...并可自定义浏览器预览的快捷键。
安装此插件，点击工具栏的preferences > package setting > side bar > Key Building-User，键入以下代码，这里设置按Ctrl+Shift+C复制文件路径，按F1~F5分别在firefox，chrome，IE，safari，opera浏览器预览效果，当...
30岁之后，程序员该向什么方向发展？ - 杂谈 - 清泛网 - 专注C/C++及内核技术
...且我是做前端的，很多人知道，前端越来越难，新技术新工具新框架层出不穷。今天AngularJS还很热门，明天就出来个React。所谓再不学习就老了，活到老学到老，只要保持足够的热情，足够的兴趣，学习学习再学习，你就永远不...