Q. How do you close all open graphs in Igor Pro?

A. There is no default way to do this, but a clever Japanese man (or woman, i don't know) came up with the following short trick to do the job (see above). The actual text is posted in the comment section for your copying ability.

 Key ??

Q. What is the keyboard command for the 'command' symbol in Mac OSX?

A. There isn't one.

alt + shift + k =  but the only way to get the command symbol is to use the character palette. To use it in HTML the code is "⌘"

& #x2318 without the space between the & and the #

Driving Torque?

Q. Is torque a function of speed?
Q. How do you calculate the torque of a ball screw assembly?

A.

Q: Matlab - How do you get numbers to format with zeros?

i.e. I have a bunch of file names that look like 0001, 0002 .... 0237 and so on. To create strings in order to load the files, I have to do something like

Filenumber = 1:237;

for x = Filenumber

Name = num2str(x)

eval('load(' Name ')')

end

but that doesn't work because I need the Filenumber to be '0001' not just '1'. :(

A. Use num2str(20,'%04i')

Q. How do you make Spotlight search for system files by default?

A. The published solution below will require you to use Command+F in finder to activate, but its nice because now you have the choice. Normal spotlight will act.. normally. Command+f will include all system files.

http://www.macosxhints.com/article.php?story=20080229204517495&query=finder%2Bsearch

Q. What does ~/ mean when describing folders on a mac?

A. The tilda refers to the users home directory.

i.e. ~'/Library' = 'jlross/Library' for me

Challenge!

This is a challenge to any and all computer hackers, wizards, geeks
and guru's out there. Below is a link to a LATEX file that was
corrupted by Time Machine. I have an entire hard drive full of files
just like this. If you can decrypt the mess that this file is, I am
offering a $100 reward (assuming the decryption allows me to decrypt
other files on my computer as well) Hey, its not much money, but i'm
a grad student so what can you expect?

Good luck!

Tex File