- 军军小站|张军博客

Linux cp mv rm ln 命令对于 inode 和 dentry

>>转载请注明来源：飘零的代码piao2010’sblog，谢谢！^_^>>本文链接地址：Linuxcpmvrmln命令对于inode和dentry的影响在看《unix环境高级编程》文件系统一节的时候，发现自己对文件系统相关的概念不是很清晰。首先介绍两个基本概念：第一个重要概念inode（中文名：索引节点），包含文件的大部分信息：*文件的字节数*文件拥有者的UserID*文件的GroupID*文件的读、写、执行权限*文件的时间戳，共有三个：ctime指in

系统 2019-08-12 01:32:47 2582

Python

python字符串过滤性能比较5种方法

python字符串过滤性能比较5种方法比较总共比较5种方法。直接看代码：importrandomimporttimeimportosimportstringbase=string.digits+string.punctuationtotal=100000defloop(ss):"""循环"""rt=''forcinss:ifcin'0123456789':rt=rt+creturnrtdefregular(ss):"""正则表达式"""importrert

系统 2019-09-27 17:55:00 2581

Python

浅谈Python中range和xrange的区别

range()是Python的内置函数，用于创建整数的列表，可以生成递增或者递减的数列。xrange也有相同的功能，今天来看下它们之间的不同。range函数说明：range([start,]stop[,step])，根据start与stop指定的范围以及step设定的步长，生成一个序列。range示例:>>>range(6)[0,1,2,3,4,5]>>>range(1,6)[1,2,3,4,5]>>>range(0,6,2)[0,2,4]xrange函

系统 2019-09-27 17:52:56 2581

Python

基于python实现的百度音乐下载器python pyqt改进版(附代码)

前言之前写过一个用python实现的百度新歌榜、热歌榜下载器的文章，实现了百度新歌、热门歌曲的爬取与下载。但那个采用的是单线程，网络状况一般的情况下，扫描前100首歌的时间大概得到40来秒。而且用Pyqt做的界面，在下载的过程中进行窗口操作，会出现UI阻塞的现象。前两天有时间调整了一下，做了几方面的改进：1.修改了UI界面阻塞的问题，下载的过程中可以进行其它的UI操作;2.爬虫程序采用一个主线程，8个子线程的方式快速爬取，网络状况一致的情况下，将扫描100

系统 2019-09-27 17:50:49 2581

Python

Python制作exe文件简单流程

一：什么是exe？exe是Windows环境中的文件扩展名之一，它是一个可执行文件，虽然扩展程序在一般情况下是隐藏的，但是我们可以通过取消选中资源管理器文件夹的高级设置中的“不显示已注册的扩展名”来显示它。可执行文件意味着它是一个可以由其自身执行的文件，而不是其他程序。例如，在Python程序中要执行它，在命令提示符下按如下所示编写，其中hello.py是文件名。pythonhello.py如果将其转换为可执行文件，即exe文件，则可以通过在命令提示符下按

系统 2019-09-27 17:50:02 2581

编程技术

用开源组件jcaptcha做jsp彩色验证码

原文参考这里安装Addjcaptcha-all.jar(providedinbin-distribution)andehcache.jar(notprovidedseeehcachesite)toyourapplicationclasspath,ieinyouWEB-INF/libfolder.实例一个jcaptcha服务，注意，必须是单例模式的importcom.octo.captcha.service.image.ImageCaptchaService

系统 2019-08-29 23:33:01 2581

Javascript

用fason的参数化定时器在javascript中模拟多线程

原帖子发表在http://community.csdn.net/Expert/TopicView.asp?id=4069144author:emu(黄希彤)有csdn的朋友把http://community.csdn.net/Expert/TopicView.asp?id=3191873给翻了出来，这样在javascript中模拟多线程又有了更漂亮的做法了：1emu--用fason的参数化定时器模拟多线程</title</span> <p class="auth-span"> <span class="muted"><i class="fa fa-user"></i><span class="zj-icon-text">系统</span></span> <span class="muted"><i class="fa fa-clock-o"></i><span class="zj-icon-text">2019-08-29 23:22:52</span></span> <span class="muted"><i class="fa fa-eye"></i><span class="zj-icon-text">2581</span></span>  </p> </article><article class="excerpt"> <header> <a title="编程技术" class="label label-important zj-del-target" href="/category/30">编程技术<i class="label-arrow"></i></a> <h2> <a class="zj-titles zj-del-target" href="/article/19533" title="能够操作excel的开源项目jexcelapi" target="_blank" onclick="return recordId('',)">能够操作excel的开源项目jexcelapi </a> </h2> </header> <div class="focus"> <a class="zj-del-target" href="/article/19533" target="_blank"><img style="width: 200px; height: 123px;" class="thumb" src="/Public/static/images/article/20.jpg" alt="" title=""></a> </div> <span class="note" onclick="if (jq.browser.versions.mobile) {window.location.href='/article/19533';}else{window.open('/article/19533');}" style="cursor: pointer;">点击这里使用RSS订阅本Blog：<linkrel="alternate"href="http://feed.feedsky.com/softwave"type="application/rss+xml"title="RSS2.0"><scriptlanguage="javascript"> </p> </article><article class="excerpt"> <header> <a title="编程技术" class="label label-important zj-del-target" href="/category/30">编程技术<i class="label-arrow"></i></a> <h2> <a class="zj-titles zj-del-target" href="/article/19479" title="简体良葛格学习笔记" target="_blank" onclick="return recordId('',)">简体良葛格学习笔记 </a> </h2> </header> <div class="focus"> <a class="zj-del-target" href="/article/19479" target="_blank"><img style="width: 200px; height: 123px;" class="thumb" src="/Public/static/images/article/14.jpg" alt="" title=""></a> </div> <span class="note" onclick="if (jq.browser.versions.mobile) {window.location.href='/article/19479';}else{window.open('/article/19479');}" style="cursor: pointer;">花了一些时间，作了一些繁体转简体的工作，不依赖GoogleTranslate，有兴趣的，可以至这边观看…http://caterpillar.onlyfun.net/GossipCN/index.html简体良葛格学习笔记</span> <p class="auth-span"> <span class="muted"><i class="fa fa-user"></i><span class="zj-icon-text">系统</span></span> <span class="muted"><i class="fa fa-clock-o"></i><span class="zj-icon-text">2019-08-29 23:20:01</span></span> <span class="muted"><i class="fa fa-eye"></i><span class="zj-icon-text">2581</span></span>  </p> </article><article class="excerpt"> <header> <a title="编程技术" class="label label-important zj-del-target" href="/category/30">编程技术<i class="label-arrow"></i></a> <h2> <a class="zj-titles zj-del-target" href="/article/19066" title="dwr" target="_blank" onclick="return recordId('',)">dwr </a> </h2> </header> <div class="focus"> <a class="zj-del-target" href="/article/19066" target="_blank"><img style="width: 200px; height: 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