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搜索[windows]，共10000篇文章
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windows目录\在实际开发中使用/代替

#include <boost\shared_ptr.hpp>尽量不要使用\，而是使用/，这样子方面移植代码到Linux 环境下 代码如下： #include "stdafx.h" #include <iostream> #include <fstream> #include <string> using namespace std; int _tmain(int argc, _TCHAR* argv[]) { char utfBuffer[256] = {0}; ifstream utffile("E:/doc/Android/Makefile");//OK //ifstream utffile("E:\doc\Android\Makefile");//ERROR //ifstream utffile("E:\\doc\\Android\\Makefile");//OK utffile.getline(utfBuffer, 100); size_t inLen = strlen(utfBuffer); return 0; } 总结： 第一种方案采用和Unix系统一样的斜杠，方便在以后的开发中移植到Linux平台，毕竟头文件include中斜杠的修改比较麻烦。 第三种方法采用双反斜杠，告诉编译器前面的反斜杠不是用来屏蔽转义的，而是实实在在存在的。 第二种错误方案，详细分析： 拆分字符串： char utfBuffer[256] = {0}; char szPathName[256] ={"E:\doc\Android\Makefile"}; ifstream utffile(szPathName); utffile.getline(utfBuffer, 100); size_t inLen = strlen(utfBuffer); return 0; 通过单步调试szPathName的实际内容变成："E:docAndroidMakefile" 编译器认为\是用来禁止转义用的，而没有想到用户实际上是作为反斜杠，因此将其清除，导致读取文件路径失败 本文转自fengyuzaitu 51CTO博客，原文链接：http://blog.51cto.com/fengyuzaitu/1953537，如需转载请自行联系原作者
2017-11-07
优秀的个人博客,低调大师

Hadoop on Windows with Eclipse -04- Setup SSH daemon

Setup SSH daemon Both Hadoop scripts and Eclipse plug-in need password-less SSH to operate. This section describes how to set it up in the Cygwin environment. Configure ssh daemon Open the Cygwin command prompt. Execute the following command: ssh-host-config When asked if privilege separation should be used, answerno. When asked if sshd should be installed as a service, answeryes. When asked about the value of CYGWIN environment variable, enterntsec. Here is an example session of this command. Note that the input typed by the user is shown in pink and output from the system is shown in gray. Example of using ssh-host-config Start SSH daemon here FindMy Computericon either on your desktop or in the start-up menu, right-click on it and selectManagefrom the context menu. OpenServices and Applicationsin the left-hand panel then select theServicesitem. Find theCYGWIN sshditem in the main section and right-click on it. SelectStartfrom the context menu. Start SSHD service A small window should pop-up indicating the progress of the service start-up. After that window disappears the status of CYGWIN sshd service should change toStarted. Setup authorization keys Eclipse plug-in and Hadoop scripts require ssh authentication to be performed through authorization keys rather than passwords. The following steps describe how authorization keys are set up. here Open cygwin command prompt Execute the following command to generate keys ssh-keygen When prompted for filenames and pass phrases press ENTER to accept default values. After the command has finished generating keys, enter the following command to change into your .ssh directory: cd ~/.ssh Check if the keys were indeed generated by executing the following command: ls -l You should see two filesid_rsa.pubandid_rsawith recent creation dates.These files contain authorization keys. To register the new authorization keys enter the following command (note the sharply-angled double brackets -- they are very important): cat id_rsa.pub >> authorized_keys Setting up authorization keys Now check if the keys were set up correctly by executing the following command: ssh localhost Since it is a new ssh installation, you will be warned that authenticity of the host could not be established and will be asked whether you really want to connect. Answeryesand press ENTER. You should see the Cygwin prompt again, which means that you have successfully connected. Now execute the command again: ssh localhost This time you should not be prompted for anything.
2017-10-10
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Hadoop on Windows with Eclipse -06- Unpack Hadoop Installation

Unpack Hadoop Installation The next step is to unpack the downloaded and copied package. here To unpack the package follow these steps: Open a new Cygwin window. After the new Cygwin window appears, execute the following command: tar -xzf hadoop-0.19.1.tar.gz This will start unpacking the Hadoop distribution. After several minutes you should see a new Cygwin prompt again as shown in the screenshot below: When you see the new prompt, execute the following command: ls -l This command will list the contents of your home directory. You should see a newly created directory calledhadoop-0.19.1 Next execute the following commands: cd hadoop-0.19.1 ls -l If you get output similar to the following, everything was unpacked correctly and you can go to the next step.
2017-10-10
优秀的个人博客,低调大师

Hadoop on Windows with Eclipse -03- Set Environment Variables

Set Environment Variables The next step is to set up the PATH environment variable so that Eclipse IDE can access Cygwin commands here To set environment variables follow these steps: Find "My Computer" icon either on the desktop or in the start menu, right-click on it and selectPropertiesitem from the menu. When you see the Properties dialog box, click on theEnvironment Variablesbutton as shown below WhenEnvironment Variablesdialog shows up, click on thePathvariable located in theSystem Variablesbox and then click theEditbutton. WhenEditdialog appears append the following text to the end of theVariable valuefield: ;c:\cygwin64\bin;c:\cygwin64\usr\sbin Note: If you installed cygwin in the non-standard location, correct the above value accordingly. Close all three dialog boxes by pressing OK button of each dialog box.
2017-10-09

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