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Create: 2022-05-26 Update: 2025-07-09 18:03:24

Вчера писал про единицы измерения, которые обязательно нужно помнить и писать правильно. В комментариях получил подсказку на утилиту командной строки Linux - units. Она умеет делать конвертацию одних единиц измерения в другие. Не знал и не слышал про неё ранее.

Живет в системных репах, так что ставится стандартно:
# apt install units
# dnf install units

Я попользовался ей немного. Выглядит удобно. Как минимум, не нужны сторонние конвертеры. В консоли всё делается намного быстрее. Вот мой пример с мебибайтами из прошлой заметки:
# units "10 mebibyte" megabits
* 83.88608
/ 0.011920929
10 мебибайт = 83,89 мегабит. Первое число - результат прямой конвертации 10 мебибайт в мегабиты, второе - коэффициент, с помощью которого может быть выполнена обратная конвертация.

Переводим 100 Мбит в Мбайт:
# units "100 megabit" megabyte
* 12.5
/ 0.08
100 мегабит = 12,5 мегабайт.
Подобную конвертацию часто приходится делать, так что для популярных скоростей я уже и так помню числа. Хотя тут всё просто. Надо делить на 8.

Units умеет конвертировать не только единицы измерения хранения данных, но и многие другие. Понимает при этом только английский язык. Так что если пользоваться регулярно, то ещё и правильное написание быстро запомнится.

Ниже бытовой пример, который может пригодиться. Перевод литров в кубические метры:
# units "100 litres" m^3
* 0.1
/ 10
100 литров = 0,1 кубический метр.

# units "1 m^3" "10 litres"
1 полный куб воды на даче вмещает 100 вёдер для полива огорода 👨‍🌾

Переводим мили в километры:
# units "60 mile" kilometre
* 96.56064
/ 0.010356187

Чего только в консоли нет. Не удивлюсь, если в стандартных репах можно найти прогноз погоды или курсы валют. А также расчёт силы всемирного тяготения.

#terminal #linux

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Вчера писал про единицы измерения

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