BSD 4_3_Tahoe development
[unix-history] / usr / man / cat1 / units.0
UNITS(1) UNIX Programmer's Manual UNITS(1)
N\bNA\bAM\bME\bE
units - conversion program
S\bSY\bYN\bNO\bOP\bPS\bSI\bIS\bS
u\bun\bni\bit\bts\bs
D\bDE\bES\bSC\bCR\bRI\bIP\bPT\bTI\bIO\bON\bN
_\bU_\bn_\bi_\bt_\bs converts quantities expressed in various standard
scales to their equivalents in other scales. It works
interactively in this fashion:
_\bY_\bo_\bu _\bh_\ba_\bv_\be: inch
_\bY_\bo_\bu _\bw_\ba_\bn_\bt: cm
* _\b2._\b5_\b4_\b0_\b0_\b0_\be+_\b0_\b0
/ _\b3._\b9_\b3_\b7_\b0_\b1_\be-_\b0_\b1
A quantity is specified as a multiplicative combination of
units optionally preceded by a numeric multiplier. Powers
are indicated by suffixed positive integers, division by the
usual sign:
_\bY_\bo_\bu _\bh_\ba_\bv_\be: 15 pounds force/in2
_\bY_\bo_\bu _\bw_\ba_\bn_\bt: atm
* _\b1._\b0_\b2_\b0_\b6_\b9_\be+_\b0_\b0
/ _\b9._\b7_\b9_\b7_\b3_\b0_\be-_\b0_\b1
_\bU_\bn_\bi_\bt_\bs only does multiplicative scale changes. Thus it can
convert Kelvin to Rankine, but not Centigrade to Fahrenheit.
Most familiar units, abbreviations, and metric prefixes are
recognized, together with a generous leavening of exotica
and a few constants of nature including:
pi 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
`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', ...
For a complete list of units, `cat /usr/lib/units'.
F\bFI\bIL\bLE\bES\bS
/usr/lib/units
Printed 7/9/88 April 29, 1985 1
UNITS(1) UNIX Programmer's Manual UNITS(1)
B\bBU\bUG\bGS\bS
Don't base your financial plans on the currency conversions.
Printed 7/9/88 April 29, 1985 2