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Plan 9 - man page for units (plan9 section 1)

UNITS(1)			     General Commands Manual				 UNITS(1)

NAME
       units - conversion program

SYNOPSIS
       units [ -v ] [ file ]

DESCRIPTION
       Units  converts	quantities  expressed  in various standard scales to their equivalents in
       other scales.  It works interactively in this fashion:

	      you have: inch
	      you want: cm
		  * 2.54
		  / 0.393701

       A quantity is specified as a multiplicative combination of units and floating  point  num-
       bers.  Operators have the following precedence:

	      + -	     add and subtract
	      * / x -:-      multiply and divide
	      catenation     multiply
	      2 3 ^	     exponentiation
	      | 	     divide
	      ( ... )	     grouping

       Most  familiar  units,  abbreviations, and metric prefixes are recognized, together with a
       generous leavening of exotica and a few constants of nature including:

	      pi,n    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

       The is a unit of mass.  Compound names are run together, e.g.  British units  that  differ
       from their US counterparts are prefixed thus: Currency is denoted etc.

       The complete list of units can be found in /lib/units.  A file argument to units specifies
       a file to be used instead of /lib/units.  The -v flag causes units  to  print  its  entire
       database.

EXAMPLE
       you have: 15 pounds force/in2
       you want: atm
	   * 1.02069
	   / .97973

FILES
       /lib/units

SOURCE
       /sys/src/cmd/units.y

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 /lib/units.

											 UNITS(1)


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