Commit | Line | Data |
---|---|---|
cab7a51b | 1 | .\" @(#)units.1 6.1 (Berkeley) %G% |
8b472826 | 2 | .\" |
cab7a51b | 3 | .TH UNITS 1 "" |
8b472826 KM |
4 | .AT 3 |
5 | .if n .ds / / | |
6 | .if t .ds / \z/\h'\w'*'u' | |
7 | .SH NAME | |
8 | units \- conversion program | |
9 | .SH SYNOPSIS | |
10 | .B units | |
11 | .SH DESCRIPTION | |
12 | .I Units | |
13 | converts quantities expressed | |
14 | in various standard scales to | |
15 | their equivalents in other scales. | |
16 | It works interactively in this fashion: | |
17 | .PP | |
18 | .I " You have:" | |
19 | inch | |
20 | .br | |
21 | .I " You want:" | |
22 | cm | |
23 | .br | |
24 | .I " * 2.54000e+00 | |
25 | .br | |
26 | .I " \*/ 3.93701e\-01 | |
27 | .PP | |
28 | A quantity is specified as a multiplicative combination of | |
29 | units optionally preceded by a numeric multiplier. | |
30 | Powers are indicated by suffixed positive integers, | |
31 | division by the usual sign: | |
32 | .PP | |
33 | .I " You have:" | |
34 | 15 pounds force/in2 | |
35 | .br | |
36 | .I " You want:" | |
37 | atm | |
38 | .br | |
39 | .I " * 1.02069e+00" | |
40 | .br | |
41 | .I " \*/ 9.79730e\-01" | |
42 | .PP | |
43 | .I Units | |
44 | only does multiplicative scale changes. | |
45 | Thus it can convert Kelvin to Rankine, but not Centigrade to | |
46 | Fahrenheit. | |
47 | Most familiar units, | |
48 | abbreviations, and metric prefixes are recognized, | |
49 | together with a generous leavening of exotica | |
50 | and a few constants of nature including: | |
51 | .PP | |
52 | .nf | |
53 | pi ratio of circumference to diameter | |
54 | c speed of light | |
55 | e charge on an electron | |
56 | g acceleration of gravity | |
57 | force same as g | |
58 | mole Avogadro's number | |
59 | water pressure head per unit height of water | |
60 | au astronomical unit | |
61 | .PP | |
62 | .fi | |
63 | `Pound' is a unit of | |
64 | mass. | |
65 | Compound names are run together, e.g. `lightyear'. | |
66 | British units that differ from their US counterparts | |
67 | are prefixed thus: `brgallon'. | |
68 | Currency is denoted `belgiumfranc', `britainpound', ... | |
69 | .PP | |
70 | For a complete list of units, `cat /usr/lib/units'. | |
71 | .SH FILES | |
72 | /usr/lib/units | |
73 | .SH BUGS | |
74 | Don't base your | |
75 | financial plans on the currency conversions. |