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NetBSD 6.1.5 - man page for ching (netbsd section 6)

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CHING(6)				 BSD Games Manual				 CHING(6)

NAME
     ching -- the book of changes and other cookies

SYNOPSIS
     ching [hexagram]

DESCRIPTION
     The I Ching or Book of Changes is an ancient Chinese oracle that has been in use for cen-
     turies as a source of wisdom and advice.

     The text of the oracle (as it is sometimes known) consists of sixty-four hexagrams, each
     symbolized by a particular arrangement of six straight (---) and broken (- -) lines.  These
     lines have values ranging from six through nine, with the even values indicating the broken
     lines.

     Each hexagram consists of two major sections.  The Judgement relates specifically to the
     matter at hand (e.g., ``It furthers one to have somewhere to go.'') while the Image
     describes the general attributes of the hexagram and how they apply to one's own life
     (``Thus the superior man makes himself strong and untiring.'')

     When any of the lines have the values six or nine, they are moving lines; for each there is
     an appended judgement which becomes significant.  Furthermore, the moving lines are inher-
     ently unstable and change into their opposites; a second hexagram (and thus an additional
     judgement) is formed.

     Normally, one consults the oracle by fixing the desired question firmly in mind and then
     casting a set of changes (lines) using yarrow-stalks or tossed coins.  The resulting hexa-
     gram will be the answer to the question.

     Using an algorithm suggested by S. C. Johnson, the UNIX oracle simply reads a question from
     the standard input (up to an EOF) and hashes the individual characters in combination with
     the time of day, process id and any other magic numbers which happen to be lying around the
     system.  The resulting value is used as the seed of a random number generator which drives a
     simulated coin-toss divination.  The answer is then piped through nroff(1) for formatting
     and will appear on the standard output.

     For those who wish to remain steadfast in the old traditions, the oracle will also accept
     the results of a personal divination using, for example, coins.  To do this, cast the change
     and then type the resulting line values as an argument.

     The impatient modern may prefer to settle for Chinese cookies; try fortune(6).

DIAGNOSTICS
     The great prince issues commands,

     Founds states, vests families with fiefs.

     Inferior people should not be employed.

SEE ALSO
     It furthers one to see the great man.

BUGS
     Waiting in the mud

     Brings about the arrival of the enemy.

     If one is not extremely careful,

     Somebody may come up from behind and strike him.

     Misfortune.

BSD					   May 31, 1993 				      BSD
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