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9个常用iptables配置实例 - 更多技术 - 清泛网 - 专注C/C++及内核技术
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iptables -A INPUT -i eth0 -p tcp -s 192.168.100.0/24 --dport 22 -m state --state NEW,ESTABLESHED -j ACCEPT
iptables -A OUTPUT -o eth0 -p tcp --sport 22 -m state --state ESTABLISHED -j ACCEPT
若要支持由本机通过SSH连接其他机器，由于在本机端口建立连接，因而还...
How can I reload .emacs after changing it?
How can I get Emacs to reload all my definitions that I have updated in .emacs without restarting Emacs?
18 Answers
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What are free monads?
I've seen the term Free Monad pop up every now and then for some time, but everyone just seems to use/discuss them without giving an explanation of what they are. So: what are free monads? (I'd say I'm familiar with monads and the Haskell basics, but have only a very rough knowledge of cat...
How to set a default value with Html.TextBoxFor?
Simple question, if you use the Html Helper from ASP.NET MVC Framework 1 it is easy to set a default value on a textbox because there is an overload Html.TextBox(string name, object value) . When I tried using the Html.TextBoxFor method, my first guess was to try the following which did not work...
Why do we check up to the square root of a prime number to determine if it is prime?
To test whether a number is prime or not, why do we have to test whether it is divisible only up to the square root of that number?
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Is there a (repeat-last-command) in Emacs?
Frequently, I've dug into apropos and docs looking for something like the following only to give up to get back to the task at hand:
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How can I convert comma separated string into a List
This doesn't work cause the split method returns a string[]
11 Answers
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The first day of the current month in php using date_modify as DateTime object
I can get the Monday of this week with:
11 Answers
11
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How to find the last day of the month from date?
How can I get the last day of the month in PHP?
28 Answers
28
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How to have an automatic timestamp in SQLite?
I have an SQLite database, version 3 and I am using C# to create an application that uses this database.
7 Answers
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