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 NAME     
 |  |  |  | units – conversion program 
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 SYNOPSIS     
 DESCRIPTION     
 |  |  |  | Units converts quantities expressed in various standard scales
    to their equivalents in other scales. It works interactively in
    this fashion: 
 A quantity is specified as a multiplicative combination of units
    and floating point numbers. Operators have the following precedence:|  |  |  | you have: inch you want: cm
 
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 Most familiar units, abbreviations, and metric prefixes are recognized,
    together with a generous leavening of exotica and a few constants
    of nature including:|  |  |  | + −           add and subtract * / x ÷         multiply and divide
 catenation        multiply
 ² ³ ^           exponentiation
 |             divide
 ( ... )          grouping
 
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 The pound is a unit of mass. Compound names are run together,
    e.g. lightyear. British units that differ from their US counterparts
    are prefixed thus: brgallon. Currency is denoted belgiumfranc,
    britainpound, etc. 
    
    
    The complete list of units can be found in /usr/lib/plan9/lib/units.
    A file argument to units specifies a file to be used instead of
    /usr/lib/plan9/lib/units. The −v
    flag causes units to print its entire database.|  |  |  | pi,π     ratio of circumference to diameter c       speed of light
 e       charge on an electron
 g       acceleration of gravity
 force    same as g
 mole     Avogadro’s number
 water    pressure head per unit height of water
 au       astronomical unit
 
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 EXAMPLE     
 |  |  |  | you have: 15 pounds force/in² you want: atm
 
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 FILES     
 SOURCE     
 BUGS     
 |  |  |  | Since units does only multiplicative scale changes, it can convert
    Kelvin to Rankine but not Centigrade to Fahrenheit. 
    
    
    Currency conversions are only as accurate as the last time someone
    updated the database. 
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