通向罗马之路----Reinhard's Blog: 糠皮优特

关于shell 的几本书

Wed, 07 Nov 2007 16:07:30 GMT

Shell 编程推荐书目

1. Learning Bash shell , OReilly Press 是系统的学习BASH 的一本好书，电子版多处可提供

2. Unix Hints and Hacks, Que Press, 电子版多处可提供

3. Advanced Bash-Scripting Guide

http://personal.riverusers.com/~thegrendel/abs-guide-5.0.tar.bz2

中文版也有出版。

http://www.linuxsir.org/main/?q=node/140

gzip vs. bzip2 vs. rzip

Tue, 06 Nov 2007 16:15:57 GMT

For a short article in the June issue of Linux Magazine, I needed to compare the relative performance of gzip, bzip2, and rzip.

I used a 180MB mbox file, consisting of my non-spam e-mail from last month. (I know, it's only one test and doesn't represent how the tools will work on other data sets.)

  command       cpu time      new size
  -------       --------      --------
  gzip          17.63 sec     87 MB
  gzip -9       23.26 sec     87 MB
  bzip2 -9     114.90 sec     76 MB
  rzip          57.00 sec     52 MB

It's interesting to note that gzip's default (-6) and "try hardest" (-9) resulted in less than a 1MB difference.

I won't spoil the article by telling you the rest of the story here (why you may or may not want to use a particular tool), but I thought the numbers alone were pretty interesting.

http://jeremy.zawodny.com/blog/archives/001842.html

On Software Test

Mon, 05 Nov 2007 16:18:15 GMT

软件测试推荐书目

1.Dr. Bill Hetzel（代表论著《The Complete Guide to Software Testing》
Establish confidence that a program does what it is supposed to do.
Any activities aimed at evaluating an attribut or capability of a program or system.

2.1990 IEEE/ANSI, 1990 [Std 610.12-1990]:
The process of operating a system or component under specified conditions, observing
or recording the results, and making an evaluation of some aspect of the system or component.

3. Glenford J. Myers（代表论著《The Art of Software Testing》
The process of executing a program or system with the intent of finding errors.

4. MS testing (First class)
a. Requirement Specification/Functional Design Specification/Implementation Design Specification
b. Test plan & testing case design
c. Automation test script, automatic testing
     测试的过程来看，总是先运行或执行简单用例，然后再复杂用例；
     先验证单一的基本功能，再综合的端到端的功能；先发现解决表面的，影响面大的Bug，
    再深层的，不容易重现的Bug。

5. MS testing (Second class)----Bug Bash（Bug大扫除）

6. 微软在软件测试方面有很多特有的做法，和概念上的突破，
比如“软件测试的信息服务功能”、“以用户为中心的宏观质量体系”、
“分级测试”、“项目的质量管理系统”、“Bug三方会审”、“测试自动化”
和“软件测试的软硬件—部门、团队、人和基础设施”等等

7. 软件测试行业中最难回答的问题:测试的充分性问题。
如果从测试执行的角度来看测试充分性，那么应从2个子方面来看：广度覆盖和深度覆盖

8.一个喝水的带广告图案的花纸杯
“基本功能测试”、“可用性测试”、“安全测试”、“压力测试”、“性能测试
   功能性测试case：1。能不能装水，盛水。
                   2。装水之后会不会漏。
                   3。装水、开水之后，杯子能不能拿起来，拿起来能不能喝。
                   4。纸杯有没有受污染，能否饮用。
                   5。盛水之后，能放置多久。
   feature测试case: 1. 广告图案是否正确。
                    2。纸杯的形状是否和设计的一样。