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Internet Resources for Chapter 18
Filters: Counting and Formatting
Filters
http://en.wikipedia.org/wiki/Filter_%28Unix%29
How Unix uses tabs
http://www.xmission.com/~comphope/unix/utabs.htm
(tabs command)
http://www.opengroup.org/onlinepubs/009695399/utilities/stty.html
Setting tabs with ttty:
For horizontal tabs, search for tab0; for vertical tabs, search for vt0
expand, unexpand
http://www.computerhope.com/unix/uexpand.htm
Formatting text: fold, fmt, pr
http://pangea.stanford.edu/computerinfo/unix/formatting/
Punch cards
http://en.wikipedia.org/wiki/Punch_card
#Computer_programming_in_the_punch_card_era
http://www-db.stanford.edu/pub/voy/museum/pictures/
display/2-2-ElecKeyPunch.htm
Herman Hollerith and his inventions
http://www.britannica.com/eb/article-9040802/Herman-Hollerith
http://www.britannica.com/eb/art-19206
(drawings of tabulator)
http://www.computer-museum.org/main/collections/hollerith.shtml
History of U.S. banknotes
http://en.wikipedia.org/wiki/United_States_one-dollar_bill
http://www.ronscurrency.com/rhist.htm
History of IBM
http://www-03.ibm.com/ibm/history/history/decade_1910.html
nanorc files
http://www.nano-editor.org/dist/v1.3/nano.html#Nanorc-Files
Line printers
http://en.wikipedia.org/wiki/Line_printer
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