From: "Joe Barr" 

http://www.linuxworld.com/2003/0127.barr.html

 The story of how BitKeeper has come to be Linus Torvalds' (and many other
 kernel hackers) tool of choice in maintaining the Linux development tree
 is worthy of a book. Here's the Cliff Note's version of McVoy's
 contribution to Linux kernel development, BitKeeper, and countless hours
 of flaming on the role of open source and proprietary software.

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