Code Post: 302860671

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The Lounge What is on Your Mind? Code Post 302860671 by jim mcnamara on Monday 7th of October 2013 03:48:05 AM

10-07-2013

Registered User

Computer systems use binary numbers. That is: the number "two" times itself.

2x2x2x2x2x2x2x2x2x2 = 1024 = 1 K (2^10)

2x2x2x2x2x2x2x2x2x2X2x2x2x2x2x2x2x2x2x2 = 1048576 = M (2^20)

So one Kb (or KB) is 1024 bytes of data in a file
One MB is 1048576 bytes of data in a file.

Since the computer uses only numbers to represent everything, the alphabet and other characters are assigned a number. Capital A=65, 0 (zero number character) = 49.

The definitions exist for EVERY character you can type, including the <enter> key.
The definition of these characters is a world-wide standard, it is called ASCII. When you set your computer to use languages that have complicated sets of glyphs, the new rules (numbers for each glyph) are stored in locale settings. These are special, not ASCII usually.

The default locale is named "C". After the computer language C. That locale uses ASCII.

Computers are all about numbers and number crunching, so everything boils down to how numbers are stored in memory - they are stored as base2 numbers - binary - only ones and zeroes are allowed.

jim mcnamara

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LEARN ABOUT SUNOS

dumpcs

dumpcs(1)							   User Commands							 dumpcs(1)

NAME

       dumpcs - show codeset table for the current locale

SYNOPSIS

       dumpcs [-0123vw]

DESCRIPTION

       dumpcs  shows a list of printable characters for the user's current locale, along with their hexadecimal code values. The display device is
       assumed to be capable of displaying characters for a given locale. With no option, dumpcs displays the entire list of printable	characters
       for the current locale.

       With one or more numeric options specified, it shows EUC codeset(s) for the current locale according to the numbers specified, and in order
       of codeset number. Each non-printable character is represented by an asterisk "*" and enough ASCII space character(s) to  fill  that  code-
       set's column width.

OPTIONS

       -0	Show ASCII (or EUC primary) codeset.

       -1	Show EUC codeset 1, if used for the current locale.

       -2	Show EUC codeset 2, if used for the current locale.

       -3	Show EUC codeset 3, if used for the current locale.

       -v	"Verbose".  Normally,  ranges of non-printable characters are collapsed into a single line. This option produces one line for each
		non-printable character.

       -w	Replace code values with corresponding wide character values (process codes).

ENVIRONMENT VARIABLES

       The environment variables LC_CTYPE and LANG control the character classification throughout dumpcs. On entry to dumpcs,	these  environment
       variables  are  checked in that order. This implies that a new setting for LANG does not override the setting of LC_CTYPE. When none of the
       values is valid, the character classification defaults to the POSIX.1 "C" locale.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       |Availability		     |SUNWcsu			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       localedef(1), attributes(5)

NOTES

       dumpcs can only handle EUC locales.

SunOS 5.10							    20 Dec 1996 							 dumpcs(1)