对于分析项目代码，特别好用！ 我用了不到一天，基本上就会用了！ 试试就明白怎么用了！

scitools understand 4.0 814版本，12月9号刚刚找到

主系统为linux系统的，可以使用linux版本understand阅读代码。

In order to thoroughly understand what makes Linux tick and why it works so well on a wide variety of systems, you need to delve deep into the heart of the kernel. The kernel handles all interactions between the CPU and the external world, and determines which programs will share processor time, in what order. It manages limited memory so well that hundreds of processes can share the system efficiently, and expertly organizes data transfers so that the CPU isn't kept waiting any longer than necessary for the relatively slow disks. The third edition of Understanding the Linux Kernel takes you on a guided tour of the most significant data structures, algorithms, and programming tricks used in the kernel. Probing beyond superficial features, the authors offer valuable insights to people who want to know how things really work inside their machine. Important Intel-specific features are discussed. Relevant segments of code are dissected line by line. But the book covers more than just the functioning of the code; it explains the theoretical underpinnings of why Linux does things the way it does. This edition of the book covers Version 2.6, which has seen significant changes to nearly every kernel subsystem, particularly in the areas of memory management and block devices. The book focuses on the following topics: Memory management, including file buffering, process swapping, and Direct memory Access (DMA) The Virtual Filesystem layer and the Second and Third Extended Filesystems Process creation and scheduling Signals, interrupts, and the essential interfaces to device drivers Timing Synchronization within the kernel Interprocess Communication (IPC) Program execution Understanding the Linux Kernel will acquaint you with all the inner workings of Linux, but it's more than just an academic exercise. You'll learn what conditions bring out Linux's best performance, and you'll see how it meets the challenge of providing good system response during process scheduling, file

linux的understand5.952，替代window下的sourceinsight，阅读linux内核代码堪称神器

代码编辑工具，非常强大

understand用户使用指南2.pdf

22.硅谷高管的UIE（Understand, Identify, Execute）增长论.pdf

Understand功能完美强大： 1、支持多语言：Ada, C, C++, C#, Java, FORTRAN, Delphi, Jovial, and PL/M ，混合语言的project也支持 2、多平台： Windows/Linux/Solaris/HP-UX/IRIX/MAC OS X 3、代码语法高亮、代码折迭、交叉跳转、书签等基本阅读功能。 4、可以对整个project的architecture、metrics进行分析并输出报表。 5、可以对代码生成多种图（butterfly graph、call graph、called by graph、control flow graph、UML class graph等），在图上点击节点可以跳转到对应的源 代码位置。 6、提供Perl API便于扩展。作图全部是用Perl插件实现的，直接读取分析好的数据库作图。 7、内置的目录和文件比较器。 8、支持project的snapshot，并能和自家的TrackBack集成便于监视project的变化。 界面没有source insight漂亮，但有些功能比SI强大。尤其是画类图，函数调用图上。随便选择一个函数名，可以追溯到main到这个函数的调用过程

understand5.0.953 for linux 64位。运行方式：解压后，进入bin/linux64/，然后运行 ./understand。破解的话自己去找个码就行了，亲测可用，