UNITS(1)UNITS(1)NAMEunits - conversion program
SYNOPSISunits [ -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
/ 0.3937008
A quantity is specified as a multiplicative combination of units and
floating point numbers. Operators have the following precedence:
+ - add and subtract
* / × ÷ 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,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
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
* 1.020689
/ 0.9797299
FILES
/lib/units
SOURCE
/appl/cmd/units.y
/appl/cmd/units.b
BUGS
Since units does only multiplicative scale changes, it can convert
Kelvin to Rankine but not Centigrade to Fahrenheit, except that the
latter is handled as a special case.
Currency conversions are only as accurate as the last time someone
updated /lib/units.
UNITS(1)