Diff on linux with lots of files

This is a post to record difference methods on linux or wherever for large numbers of files (3m to 4m)

https://stackoverflow.com/questions/4997693/given-two-directory-trees-how-can-i-find-out-which-files-differ

A utility that is useful for such compares is xargs.  A tutorial is below

http://www.linuxplanet.com/linuxplanet/tutorials/6522/1

Microdata 1600 compatable parts

THIS PART CAME FROM A FULLY FUNCTIONAL, PERFECTLY RUNNING MIYANO JNC-35/45T CNC LATHE THAT WE DISMANTLED. WE HAVE THE VIDEO OF THE MACHINE RUNNING.

search ebay for miyano JNC-35/45T CNC

Cincinnati Milacron Acramatic clone of some sort

30

gpio for various applications raspberry pi, usb, etc.

Land products, 128 I/O

http://land-boards.com/blwiki/index.php?title=DIGIO-128

RtK USB dongle for Raspberry pi GPIOs.  Supported by USB connection to a host with python drivers.

Any python access to GPIO's on RPI will work with the RtK

Original Kickstarter
https://www.kickstarter.com/projects/ryanteckltd/rtkgpio-a-usb-raspberry-pi-compatible-gpio-header
Sale page
https://www.modmypi.com/raspberry-pi/iousbanalogue-expansion-1028/interfacing-1080/ryanteck-rtk.gpio

Bitbucket library site
https://bitbucket.org/ryanteckltd/rtk-gpio-python-side

original site, shut down
http://ryanteck.uk/
https://web.archive.org/web/*/http://ryanteck.uk/