clearcase是什么东西?能不能给讲一讲?

it is a configuration management system:

from http://www.rational.com/products/softdev.jsp

Rational ClearCase gives you the power to manage all the changes your projects encounter. This comprehensive software configuration management (SCM) solution provides version control, workspace management, process configurability, and build management. With Rational ClearCase, your development team gets a scalable, best-practices-based development process that simplifies change management – shortening your development cycles, ensuring the accuracy of your releases, and delivering reliable builds and patches for your previously shipped products.

是不是和CVS比较象呀？

是基于 Unix 上的。如果是小项目的话，VSS就足够了。
crack? 应该是用不着。

谢谢，散分，别嫌分少

我为什么发不了言？