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kwh-cost
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Calculates cost of electricity.
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README.md

kwh-calc

Calculate cost of electricity.

How to use

$ kwh-calc [OPTIONS] price wattage interval [interval ..]

Options are -v, --version to show program's version; and -h, --help to show usage of a program.

price is a price per KWh. wattage is how many Watts being consumed. interval is for how long.

interval is in seconds, but you can specify a unit. Units are the following: m for minutes; h for hours; and d for days. There could be as many intervals passed as you need.

Here is an example:

$ kwh-calc 3.68 120 30d 2h

P.S.: Yeah, I pay 3.68 rubles per KWh. Which is just $0.05. :)

Installation

Manually

First run make to build a program, and then make install to copy executable in /usr/bin/. Later, use make uninstall to delete it, or just delete /usr/bin/kwh-calc.

For ArchLinux

You can take a PKGBUILD file and in a directory with it run makepkg -i.