[SPG_Active_Members] Software Archeology Experiment

Ward Cunningham ward at c2.com
Tue Nov 27 08:45:42 PST 2007


Randall -- Interesting stats. I repeated the experiment and found this  
result (included as image to preserve formatting)

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I found a total of 498 distinct sufixes.

Some differences should be noted. These are combined stats for several  
machines so there is often 3x to 5x duplication. PC, Mac and Linux are  
represented. Also I'm only counting files found in directories that I  
consider my own. I've collapsed the case so that, for example, JPG and  
jpg are combined.

Best regards. -- Ward


On Nov 26, 2007, at 10:00 PM, Randall Neff wrote:

> I ran an experiment to count the number of different file suffix
> extensions on my Windows XP PC,
> to determine how much file format documentation would be required to
> 'understand' my data.
>
> Summary:  1542 different suffixes, and 11512 files with no suffixes in
> 237,000 files ( 141 Gigabytes).
>
> Two page report is attached.
>
> Randall.
> <file-suffix- 
> report.pdf>_______________________________________________
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