term% cat index.txt 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 numbers. Operators have the following precedence:
+ - add and subtract
* / à ÷ 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,Ï 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: Cur‐
rency 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 up‐
dated /lib/units.
UNITS(1)