Sunday, December 17, 2006

I Took The Red Pill

Only it was chewable, and slightly bigger than average. I didn't know what to expect, really. Well, to be perfectly honest, I was expecting Cherry but got Cinnamon instead (which added to the effect of surprise). Seems like the Matrix universe got upgrades again, even after most people have forgotten about it and gone on with what they perceive to be reality.

OK, actually what happened is this... I've moved my Blog (again) without warning (again) to (this time) Wordpress, so all future blog posts will be at Hopefully reality will continue twisting itself into an incomprehensible yet still enjoyable pretzel there.

By the way, the Blue Pill is now chewable, too (so I hear), but I'll never get to know what it tasted like.

Thursday, December 14, 2006

man 7 units

In Ubuntu Linux, and probably in most Linux systems, you should be able to read the following man(ual) page on "Units." In my case, I enter the command "man 7 units" to pull up the following page, which has a lot of helpful and very relevant information on the use of digital measuring units in the computer industry. Read it and see for yourself.

UNITS(7) Linux Programmer’s Manual UNITS(7)

units, kilo, kibi, mega, mebi, giga, gibi - decimal and binary prefixes

Decimal prefixes
The SI system of units uses prefixes that indicate powers of ten. A kilometer is 1000 meter, and a megawatt is 1000000 watt. Below the standard prefixes.

Prefix Name Value
y yocto 10^-24 = 0.000000000000000000000001
z zepto 10^-21 = 0.000000000000000000001
a atto 10^-18 = 0.000000000000000001
f femto 10^-15 = 0.000000000000001
p pico 10^-12 = 0.000000000001
n nano 10^-9 = 0.000000001
u micro 10^-6 = 0.000001
m milli 10^-3 = 0.001
c centi 10^-2 = 0.01
d deci 10^-1 = 0.1
da deka 10^ 1 = 10
h hecto 10^ 2 = 100
k kilo 10^ 3 = 1000
M mega 10^ 6 = 1000000
G giga 10^ 9 = 1000000000
T tera 10^12 = 1000000000000
P peta 10^15 = 1000000000000000
E exa 10^18 = 1000000000000000000
Z zetta 10^21 = 1000000000000000000000
Y yotta 10^24 = 1000000000000000000000000

The symbol for micro is the Greek letter mu, often written u in an ASCII context where this Greek letter is not available. See also

Binary prefixes
The binary prefixes resemble the decimal ones, but have an additional ’i’ (and "Ki" starts with a capital ’K’). The names are formed by taking the first syllable of the names of the decimal prefix with roughly the same size, followed by "bi" for "binary".

Prefix Name Value
Ki kibi 2^10 = 1024
Mi mebi 2^20 = 1048576
Gi gibi 2^30 = 1073741824
Ti tebi 2^40 = 1099511627776
Pi pebi 2^50 = 1125899906842624
Ei exbi 2^60 = 1152921504606846976

See also

Before these binary prefixes were introduced, it was fairly common to use k=1000 and K=1024, just like b=bit, B=byte. Unfortunately, the M is capital already, and cannot be capitalized to indicate binary-ness.
At first that didn’t matter too much, since memory modules and disks came in sizes that were powers of two, so everyone knew that in such contexts "kilobyte" and "megabyte" meant 1024 and 1048576 bytes, respectively. What originally was a sloppy use of the prefixes "kilo" and "mega" started to become regarded as the "real true meaning" when computers were involved. But then disk technology changed, and disk
sizes became arbitrary numbers. After a period of uncertainty all disk manufacturers settled on the standard, namely k=1000, M=1000k, G=1000M.

The situation was messy: in the 14k4 modems, k=1000; in the 1.44MB diskettes, M=1024000; etc. In 1998 the IEC approved the standard that defines the binary prefixes given above, enabling people to be precise and unambiguous.

Thus, today, MB = 1000000B and MiB = 1048576B.

In the free software world programs are slowly being changed to conform. When the Linux kernel boots and says

hda: 120064896 sectors (61473 MB) w/2048KiB Cache

the MB are megabytes and the KiB are kibibytes.

Linux 2001-12-22 UNITS(7)

Technology Exists To Short-Circuit Christian Sanctification

Yes, it does. I'm convinced of that now. I bought a 2 gigabyte flash memory drive, tried to install Ubuntu Linux on it, and failed miserably (in more ways than just technologically). Seems like my flash drive chokes on transferring really huge files for some reason, which precludes its use as a bootable Live Ubuntu drive.


It's very interesting, though, and if I could ever get it to work, a source of personal techno-saavy Joy. Oh well, this develops character and reminds me the process of my sanctification is nowhere near finished (and is probably in the very early stages at that!).

Sunday, December 03, 2006

Beverly Hillbillies

One of my all-time favorite Weird Al videos can be viewed for free on Google video.

Virus Bulletin: Independent Malware Advice

Anyone with a computing device more sophisticated than an abacus and having an internet connection or some contact with the outside should know about this site. Independent ratings of vendor anti-malware programs are available here after a one-time and free registration. Go there. Now. And register.

For free antivirus programs, I know of two excellent choices. - Home of the AVG Free Antivirus - Home of Avast Antivirus (download page)

I've known about these three sites for a while, but somehow never got around to bookmarking or blogging them.

Saturday, December 02, 2006

Fedora Live CDs

Yes, Virginia. There are Fedora Live CDs. And I'm blogging this just in time for Christmas, what a coincidence. These Live CDs are downloadable only through Bit Torrent, which probably will not change any time soon. If you want them, grab a bittorrent client and fire it up on these.

The Linux Documentation Project

I don't want to admit that I didn't really know about this until now. Oops. Too late. Anyway, if you're in the same situation, and are interested in Linux, head on over there. It's a great site with a lot of good information. I would appreciate comments with links to other good sites with similar information available.