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Advertising terminology on the Internet

Brand, brand name, and branding: A brand is a product, service, or concept that is publicly distinguished from other products, services, or concepts so that it can be easily communicated and usually marketed. A brand name is the name of the distinctive product, service, or concept. Branding is the process of creating and disseminating the brand name. Branding can be applied to the entire corporate identity as well as to individual product and service names. In Web and other media advertising, it is recognized that there is usually some kind of branding value whether or not an immediate, direct response can be measured from an ad or campaign. Companies like Proctor and Gamble have made a science out of creating and evaluating the success of their brand name products.CPM: CPM is "cost per thousand" ad impressions, an industry standard measure for selling ads on Web sites. This measure is taken from print advertising. The "M" has nothing to do with "mega" or million. It's taken from the Roman numeral for "thousand."

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AWK

In the past I have covered grep and sed. This section discusses AWK, another cornerstone of UNIX shell programming. There are three variations of AWK: AWK - the original from AT&T NAWK - A newer, improved version from AT&T GAWK - The Free Software foundation's version Originally, I didn't plan to discuss NAWK, but several UNIX vendors have replaced AWK with NAWK, and there are several incompatibilities between the two. It would be cruel of me to not warn you about the differences. So I will highlight those when I come to them. It is important to know than all of AWK's features are in NAWK and GAWK. Most, if not all, of NAWK's features are in GAWK. NAWK ships as part of Solaris. GAWK does not. However, many sites on the Internet have the sources freely available. If you user Linux, you have GAWK. Why is AWK so important? It is an excellent filter and report writer. Many UNIX utilities generates rows and columns of information. AWK is an excellent tool for processing these rows and columns, and is easier to use AWK than most conventional programming languages. It can be considered to be a pseudo-C interpretor, as it understands the same arithmatic operators as C. AWK also has string manipulation functions, so it can search for particular strings and modify the output. AWK also has associative arrays, which are incredible useful, and is a feature most computing languages lack. Associative arrays can make a complex problem a trivial exercise. I won't exhaustively cover AWK. That is, I will cover the essential parts, and avoid the many variants of AWK. It might be too confusing to discuss three different versions of AWK. I won't cover the GNU version of AWK called "gawk." Similarly, I will not discuss the new AT&T AWK called "nawk." The new AWK comes on the Sun system, and you may find it superior to the old AWK in many ways. In particular, it has better diagnostics, and won't print out the infamous "bailing out near line ..." message the original AWK is prone to do. Instead, "nawk" prints out the line it didn't understand, and highlights the bad parts with arrows. If you find yourself needing a feature that is very difficult or impossible to do in AWK, I suggest you either use NAWK, or convert your AWK script into PERL using the "a2p" conversion program which comes with PERL. PERL is a marvelous language, and I use it all the time, but I do not plan to cover PERL in these tutorials. Having made my intention clear, I can continue with a clear conscience. Many UNIX utilities have strange names. AWK is one of those utilities. It is not an abbreviation for awkward. In fact, it is an elegant and simple language. The work "AWK" is derived from the initials of the language's three developers: A. Aho, B. W. Kernighan and P. Weinberger.

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Binary Prefixes

Prefixes for binary multiples Factor Name Symbol Origin Derivation 210 kibi Ki kilobinary: (210)1 kilo: (103)1 220 mebi Mi megabinary: (210)2 mega: (103)2 230 gibi Gi gigabinary: (210)3 giga: (103)3 240 tebi Ti terabinary: (210)4 tera: (103)4 250 pebi Pi petabinary: (210)5 peta: (103)5 260 exbi Ei exabinary: (210)6 exa: (103)6 Examples and comparisons with SI prefixes one kibibit 1 Kibit = 210 bit = 1024 bit one kilobit 1 kbit = 103 bit = 1000 bit one mebibyte 1 MiB = 220 B = 1 048 576 B one megabyte 1 MB = 106 B = 1 000 000 B one gibibyte 1 GiB = 230 B = 1 073 741 824 B one gigabyte 1 GB = 109 B = 1 000 000 000 B

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