Saturday, November 27, 2010
Friday, November 26, 2010
Tuesday, November 23, 2010
Monday, November 22, 2010
Temple Grandin TED Talk
"The World Needs All Kinds of Minds"
http://www.youtube.com/watch?v=fn_9f5x0f1Q
http://www.youtube.com/watch?v=fn_9f5x0f1Q
Saturday, November 20, 2010
Friday, November 19, 2010
Thursday, November 18, 2010
Wednesday, November 17, 2010
Tuesday, November 16, 2010
Sunday, November 14, 2010
Email Apnoea - Linda Stone (Huffington Post)
http://www.huffingtonpost.com/linda-stone/just-breathe-building-the_b_85651.html
I notice I am also doing this when waiting for the computer to do anything ... load a webpage, compile something, do a grep or find on large sets, ... how about you?
I notice I am also doing this when waiting for the computer to do anything ... load a webpage, compile something, do a grep or find on large sets, ... how about you?
Friday, November 12, 2010
Wednesday, November 10, 2010
Stepper Motor Specs
Superior Electric
SE
SLO-SYN
Synchronous / Stepping Motor
Type
M061-FC-336
18 oz-in
200 steps per rev
24.0V 0.18A DC
SPEC 2462606/05
CONT DUTY
65degC rise
Class B INSUL
IMPEDANCE PROTECTED
The Superior Electric Company Bristol CT USA
Measured Black (common) to phases ~125ohm DC cold (~18degC?)
Phases unknown sequence at this stage
Red Blue Yellow Orange
SE
SLO-SYN
Synchronous / Stepping Motor
Type
M061-FC-336
18 oz-in
200 steps per rev
24.0V 0.18A DC
SPEC 2462606/05
CONT DUTY
65degC rise
Class B INSUL
IMPEDANCE PROTECTED
The Superior Electric Company Bristol CT USA
Measured Black (common) to phases ~125ohm DC cold (~18degC?)
Phases unknown sequence at this stage
Red Blue Yellow Orange
JeeNode Experimenters Pack
http://jeelabs.com/products/jeenode-experimenters-pack
Arduino-ish with an RF transceiver on ISM band(s) - nice
Arduino-ish with an RF transceiver on ISM band(s) - nice
Tuesday, November 9, 2010
Reverse tunneling SSH ... manual extract
-L [bind_address:]port:host:hostport
Specifies that the given port on the local (client) host is to be
forwarded to the given host and port on the remote side. This
works by allocating a socket to listen to port on the local side,
optionally bound to the specified bind_address. Whenever a con‐
nection is made to this port, the connection is forwarded over
the secure channel, and a connection is made to host port
hostport from the remote machine. Port forwardings can also be
specified in the configuration file. IPv6 addresses can be spec‐
ified with an alternative syntax:
[bind_address/]port/host/hostport or by enclosing the address in
square brackets. Only the superuser can forward privileged
ports. By default, the local port is bound in accordance with
the GatewayPorts setting. However, an explicit bind_address may
be used to bind the connection to a specific address. The
bind_address of “localhost” indicates that the listening port be
bound for local use only, while an empty address or ‘*’ indicates
that the port should be available from all interfaces.
Specifies that the given port on the local (client) host is to be
forwarded to the given host and port on the remote side. This
works by allocating a socket to listen to port on the local side,
optionally bound to the specified bind_address. Whenever a con‐
nection is made to this port, the connection is forwarded over
the secure channel, and a connection is made to host port
hostport from the remote machine. Port forwardings can also be
specified in the configuration file. IPv6 addresses can be spec‐
ified with an alternative syntax:
[bind_address/]port/host/hostport or by enclosing the address in
square brackets. Only the superuser can forward privileged
ports. By default, the local port is bound in accordance with
the GatewayPorts setting. However, an explicit bind_address may
be used to bind the connection to a specific address. The
bind_address of “localhost” indicates that the listening port be
bound for local use only, while an empty address or ‘*’ indicates
that the port should be available from all interfaces.
Monday, November 8, 2010
Sunday, November 7, 2010
How to set up a Private Centos Mirror (Nerdicism)
http://nerdicism.com/2009/04/how-to-setup-up-a-private-centos-mirror/
Seems straightforward enough ... one of the better howto's out there.
Seems straightforward enough ... one of the better howto's out there.
Saturday, November 6, 2010
Friday, November 5, 2010
Wednesday, November 3, 2010
ssh-copy-id copying ssh id (public key) to another host
From http://sysadminsjourney.com/content/2009/11/12/quicktip-make-life-easier-ssh-copy-id :
$ ssh-copy-id myhost
...enter password...
...and that's it
Handy, eh?
$ ssh-copy-id myhost
...enter password...
...and that's it
Handy, eh?
Sherlock Holmes on Knowledge
Sherlock Holmes closed his eyes and placed his elbows upon the arms of his chair, with his finger-tips together. “The ideal reasoner,” he remarked, “would, when he had once been shown a single fact in all its bearings, deduce from it not only all the chain of events which led up to it but also all the results which would follow from it. As Cuvier could correctly describe a whole animal by the contemplation of a single bone, so the observer who has thoroughly understood one link in a series of incidents should be able to accurately state all the other ones, both before and after. We have not yet grasped the results which the reason alone can attain to. Problems may be solved in the study which have baffled all those who have sought a solution by the aid of their senses. To carry the art, however, to its highest pitch, it is necessary that the reasoner should be able to utilise all the facts which have come to his knowledge; and this in itself implies, as you will readily see, a possession of all knowledge, which, even in these days of free education and encyclopaedias, is a somewhat rare accomplishment. It is not so impossible, however, that a man should possess all knowledge which is likely to be useful to him in his work, and this I have endeavoured in my case to do. If I remember rightly, you on one occasion, in the early days of our friendship, defined my limits in a very precise fashion.”
“Yes,” I answered, laughing. “It was a singular document. Philosophy, astronomy, and politics were marked at zero, I remember. Botany variable, geology profound as regards the mud-stains from any region within fifty miles of town, chemistry eccentric, anatomy unsystematic, sensational literature and crime records unique, violin-player, boxer, swordsman, lawyer, and self-poisoner by cocaine and tobacco. Those, I think, were the main points of my analysis.”
Holmes grinned at the last item. “Well,” he said, “I say now, as I said then, that a man should keep his little brain-attic stocked with all the furniture that he is likely to use, and the rest he can put away in the lumber-room of his library, where he can get it if he wants it. Now, for such a case as the one which has been submitted to us to-night, we need certainly to muster all our resources. Kindly hand me down the letter K of the American Encyclopaedia which stands upon the shelf beside you. Thank you. Now let us consider the situation and see what may be deduced from it.
Excerpt from 'The Five Orange Pips'... partial quote in Pro Git book piqued my interest. Will read the book @ some stage ... it's PD and available on Project Gutenberg
“Yes,” I answered, laughing. “It was a singular document. Philosophy, astronomy, and politics were marked at zero, I remember. Botany variable, geology profound as regards the mud-stains from any region within fifty miles of town, chemistry eccentric, anatomy unsystematic, sensational literature and crime records unique, violin-player, boxer, swordsman, lawyer, and self-poisoner by cocaine and tobacco. Those, I think, were the main points of my analysis.”
Holmes grinned at the last item. “Well,” he said, “I say now, as I said then, that a man should keep his little brain-attic stocked with all the furniture that he is likely to use, and the rest he can put away in the lumber-room of his library, where he can get it if he wants it. Now, for such a case as the one which has been submitted to us to-night, we need certainly to muster all our resources. Kindly hand me down the letter K of the American Encyclopaedia which stands upon the shelf beside you. Thank you. Now let us consider the situation and see what may be deduced from it.
Excerpt from 'The Five Orange Pips'... partial quote in Pro Git book piqued my interest. Will read the book @ some stage ... it's PD and available on Project Gutenberg
Git Quick Reference online - Scott Chacon
http://gitref.org/
By Scott Chacon - the same author as the Pro Git (Apress pub.) book
Looks very handy
By Scott Chacon - the same author as the Pro Git (Apress pub.) book
Looks very handy
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