- Unix to Unix Copy program - UUCP
- file transfer over dial-up lines
- first implemented as a Bourne shell script
- periodically check a file
- if updated since last check, send it out via UUCP
- 1980 rewrite UUCP in C to make it faster

- free under Unix license
- "poor man's ARPANET"
- 1981, over 50 sites
- today nearly 100,000 newsgroups

 20 Year Usenet Archive (4)

1. Martin Campbell-Kelly and William Aspray. Computer: A History of the Information Machine (Basic Books, 1996).

2. Paul E. Ceruzzi. A History of Modern Computing (MIT Press, 2000).

3. Josh Poage.  Weekly Report IX, UT CS378-W History of Computing, Oct 28, 2002.

http://www.columbia.edu/~hauben/netbook/
http://www.ou.edu/research/electron/internet/use-soft.htm
http://www.uucp.org/history/uucp-map-1981.html

4. Josh Poage.  archived newsgroups.  Email, Oct 30, 2002.