COLLECTED BY

Organization: Internet Archive

The Internet Archive discovers and captures web pages through many different web crawls. At any given time several distinct crawls are running, some for months, and some every day or longer. View the web archive through the Wayback Machine.

Collection: Wide Crawl started March 2011

Web wide crawl with initial seedlist and crawler configuration from March 2011. This uses the new HQ software for distributed crawling by Kenji Nagahashi.

What’s in the data set:

Crawl start date: 09 March, 2011
Crawl end date: 23 December, 2011
Number of captures: 2,713,676,341
Number of unique URLs: 2,273,840,159
Number of hosts: 29,032,069

The seed list for this crawl was a list of Alexa’s top 1 million web sites, retrieved close to the crawl start date. We used Heritrix (3.1.1-SNAPSHOT) crawler software and respected robots.txt directives. The scope of the crawl was not limited except for a few manually excluded sites.

However this was a somewhat experimental crawl for us, as we were using newly minted software to feed URLs to the crawlers, and we know there were some operational issues with it. For example, in many cases we may not have crawled all of the embedded and linked objects in a page since the URLs for these resources were added into queues that quickly grew bigger than the intended size of the crawl (and therefore we never got to them). We also included repeated crawls of some Argentinian government sites, so looking at results by country will be somewhat skewed.

We have made many changes to how we do these wide crawls since this particular example, but we wanted to make the data available “warts and all” for people to experiment with. We have also done some further analysis of the content.

If you would like access to this set of crawl data, please contact us at info at archive dot org and let us know who you are and what you’re hoping to do with it. We may not be able to say “yes” to all requests, since we’re just figuring out whether this is a good idea, but everyone will be considered.

TIMESTAMPS

The Wayback Machine - https://web.archive.org/web/20110811181351/http://www.osxbook.com/software/

Software Downloads

You must read and agree to this site's terms and conditions before downloading or using any software or other material available from this site. In some cases, the software in question might include its own legalese that overrides the aforementioned default.

File Systems

MacFUSE — A mechanism for implementing user-space file systems on Mac OS X. Compatible with the FUSE (File System in User Space) API from Linux.
AncientFS—Ancient Unix file systems on Mac OS X, Linux, and FreeBSD.
UnixFS—A general-purpose layer for writing Unix-style MacFUSE-based file systems.
GrabFS—The Screenshot file system.
procfs—A MacFUSE-based process file system for Mac OS X.
sshfs—A Mac OS X port of the SSH FUSE file system from Linux.

File System Debugging and Analysis Tools

hfsdebug — A file system debugger for HFS+.
fslogger — A file system activity monitor based on the fsevents mechanism, which is also used by Spotlight.

Miscellaneous Kernel Features

XBinary — Extended Binary Format Support for Mac OS X.

Trusted Computing

TPM-Related Software — Trusted Platform Module (TPM) device driver, user-space trusted software stack, and relevant tools.
A TPM for Everyone — Software emulation of the TPM.

Kernel and User Memory

gcore — Handcrafting Process Core Dumps.
KernelMemoryAccess — A /dev/kmem device driver for Mac OS X.

Firmware

efibuildenv — Toolchain for EFI Programming on Mac OS X.

Ambient Light Sensor

LMUTracker etc. — Code for programmatically accessing the Ambient Light Sensor in Apple notebook computers.

Infrared Remote

iremoted — A daemon for receiving and displaying Apple Infrared Remote events. Also supports controlling Keynote presentations.

Sudden Motion Sensor

Note

Please note that I wrote the motion sensor software several years ago. Since then, the motion sensor hardware in Apple computers has undergone several changes. Therefore, the software may not work correctly on some computers. Section 10.7.5 of the Mac OS X Internals book describes how to retrieve accelerometer data from the motion sensor. Also see the book's accompanying source code.

AMS2HID — The Sudden Motion Sensor as a human interface device.
AMSTracker — Retrieving data from the Sudden Motion Sensor.
AMSVisualizer — A 3D visualization of the Sudden Motion Sensor.
StableWindow — A window that counters motion.
SMSRotateD — The Sudden Motion Sensor as a screen rotation trigger for automatic screen orientation based on a notebook's physical orientation (portrait or landscape).

Source Code from "Mac OS X Internals"

singh-src.tar.bz2

Jul	AUG	Sep
	11
2010	2011	2012

The Book

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