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centos 用户指定目录访问

在linux系统中，比如有这样一个场景，abc/a、abc/b、abc/c三个目录，用户user1,user2分别隶属于A组和B组.控制：用户user1只能访问abc/a和abc/b目录，而用户user2可以访问这三个所有目录。现在用了一个比较笨的办法，将三个目录的权限设置chmod770abc/achmod770abc/bchmod770abc/c第一个7代表该目录的所属者，第二个7代表该目录的所属组，第三个7代表该目录的其它组或用户，改0将控制其它组和

系统 2019-08-12 01:33:32 2852

编程技术

在Fedora 14 alpha 下测试Kvm情况(视频)

今天刚忙完，便抽空做了fc14下的虚拟机的测试，总体感觉在2.6.35的kernel下启动和配置虚拟机的速度比原来要快乐许多，下面就带着各位体验一下吧。（硬件测试环境：IBMR52，2g内存，物理机配置较低毕竟是几年前的，呵呵。艰苦吧！）迁移虚拟机650)this.width=650;"border="0"alt="在Fedora14alpha下测试Kvm情况(视频)_第1张图片"src="http://img.it610.com/image/produc

系统 2019-08-12 01:33:11 2852

编程技术

spring ContextUtils

importjava.io.IOException;importorg.springframework.context.support.ClassPathXmlApplicationContext;publicclassContextUtils{publicstaticfinalClassPathXmlApplicationContextcontext=newClassPathXmlApplicationContext("applicationContex

系统 2019-08-12 01:32:34 2852

Python

Python3.5以上版本lxml导入etree报错的解决方案

在python中安装了lxml-4.2.1，在使用时发现导入etree时IDE中报错Unresolvedreference其实发现，不影响使用，可以正常运行，对于我这种要刨根问底的人不搞明白怎么能罢休了，要保证代码不红就研究了下源码，通过源码中可以发现，html中继承了etree看下图这里也是为啥前面出红但还是能顺利执行了那么我们使用的时候就得变换下了：如下使用,哎谁让etree是二进制文件了，希望下一个版本会有好的改善，通过github看源码，发现是cp

系统 2019-09-27 17:48:57 2851

CSS

WEB2.0标准教程：第七天 CSS入门

Oracle

PL/SQL developer远程连接oracle服务器

一、配置oracle服务器的监听器listener修改<安装目录>/network/admin/目录下的listener.ora和tnsnames.ora两个文件。其中listener文件大致如下：#listener.oraNetworkConfigurationFile:/oracle/app/product/10.1.0/db_1/network/admin/listener.ora#GeneratedbyOracleconfigurationtool

系统 2019-08-29 22:57:49 2851

Android

Android 画图之抗锯齿

在画图的时候，图片如果旋转或缩放之后，总是会出现那些华丽的锯齿。其实Android自带了解决方式。方法一：给Paint加上抗锯齿标志。然后将Paint对象作为参数传给canvas的绘制方法。Java代码paint.setAntiAlias(true);方法二：给Canvas加上抗锯齿标志。有些地方不能用paint的，就直接给canvas加抗锯齿，更方便。Java代码canvas.setDrawFilter(newPaintFlagsDrawFilter(0

系统 2019-08-29 22:32:24 2851

Java

java中关于时间日期操作的常用函数

1.计算某一月份的最大天数Calendartime=Calendar.getInstance();time.clear();time.set(Calendar.YEAR,year);time.set(Calendar.MONTH,i-1);//注意,Calendar对象默认一月为0intday=time.getActualMaximum(Calendar.DAY_OF_MONTH);//本月份的天数注：在使用set方法之前，必须先clear一下，否则很多信

系统 2019-08-29 22:31:47 2851

编程技术

怎样申请 Google Map apiKey

转载自：http://blog.csdn.net/linshutao/archive/2010/07/20/5750458.aspxhttp://blog.sina.com.cn/s/blog_48b61dc70100ivrv.htmlhttp://veright.blog.163.com/blog/static/28345389201043121542107/Google官方：http://code.google.com/intl/zh-CN/andro

系统 2019-08-29 22:18:43 2851

CSS

仿iPhone开关式按钮(jQuery+CSS3)

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