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“历史遗留”漏洞:浅析新型SSL/TLS漏洞FREAK - 创意 - 清泛网 - 专注C/C++及内核技术

...钥需要出动超级电脑。而今天,我们只需要花费7小时+约100美金,就可以轻松搞定这种加密机制。 如果用户正在使用一个含有漏洞的设备,我们可以尝试利用FREAK漏洞对它进行攻击。现在像安卓、苹果手机,以及运行OS X系统的...
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awk without printing newline

... awk '{sum+=$3}; END {printf "%f",sum/NR}' ${file}_${f}_v1.xls >> to-plot-p.xls print will insert a newline by default. You dont want that to happen, hence use printf instead. share | ...
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How to wait for several Futures?

...lt;- func2.concurrently f3 <- func3.concurrently } yield for { v1 <- f1 v2 <- f2 v3 <- f3 } yield (v1,v2,v3) }.future f.onFailure { case t => println("future failed $t") } In the example above, f1,f2 and f3 will run concurrently and if any fail in any order the futu...
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What is the best way to detect a mobile device?

... 100 Why not: if( screen.width <= 480 ) { // is mobile } – andrewrjones Jan 20 '13 at 1:05 ...
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App Inventor 2 能否实现后台推送通知?源码级深度调研 - App应用开发 - 清...

...App Inventor 2 现有组件源码分析 2.1 FirebaseDB 组件 源码位置:components/src/com/google/appinventor/components/runtime/FirebaseDB.java 使用库:firebase.jar(旧版 Firebase 客户端 SDK,@UsesLibraries(libraries = "firebase.jar")) 结论:使用的是 F...
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深入理解 x86/x64 的中断体系 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术

...间低端,实际上等于 ROM 被映射到地址空间最高端和低端位置。 此时在系统的内存里其实并不存在 BIOS 代码,ROM BIOS 的一部分职责是负责安装 BIOS 代码进入系统内存。 jmp far f000:e05b 典型是这条指令就是 0xFFFFFFF0 处...
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How to clone all remote branches in Git?

...-a * master remotes/origin/HEAD remotes/origin/master remotes/origin/v1.0-stable remotes/origin/experimental If you just want to take a quick peek at an upstream branch, you can check it out directly: $ git checkout origin/experimental But if you want to work on that branch, you'll need to...
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创业公司倒闭大潮 教你正确烧钱速度? - 资讯 - 清泛网 - 专注C/C++及内核技术

...标是投资工程师团队保持产品领先、投资新办公室/地理位置(提前抢占市场)、投资市场(抢先吸引顾客),而所有这些事经常需要在你赚钱前就大量花钱。不过如果你使用这一策略,很大程度将必须依赖下面我要讲的第3点。 资金...
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Index all *except* one item in python

...at if variable is list of lists, some approaches would fail. For example: v1 = [[range(3)] for x in range(4)] v2 = v1[:3]+v1[4:] # this fails v2 For the general case, use removed_index = 1 v1 = [[range(3)] for x in range(4)] v2 = [x for i,x in enumerate(v1) if x!=removed_index] v2 ...
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linux 下巧妙使用squid代理服务器 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...下载加速服务: 四、Web缓存的类型和特点: Web缓存的位置可以有三种,一是可以防止在客户端,二是放在服务器,三是放在客户端与服务器之间的某个网络节点上,这个网络节点就是web代理服务器。 1 客户端缓存 2 代理服务...