# dntk
[](https://travis-ci.org/nnao45/dntk)
[](https://github.com/nnao45/dntk/releases/tag/v2.1.18)
[](https://crates.io/crates/dntk)
[](https://hub.docker.com/r/nnao45/dntk/tags)
[](https://raw.githubusercontent.com/nnao45/dntk/master/LICENSE)
[](https://github.com/nnao45/dntk/releases)
dntk is command line's multi-platform ***Interactive*** calculator, [GNU bc](https://www.gnu.org/software/bc/) wrapper.
✔︎ dntk means calculator in a japanese.
✔︎ dntk is gnu bc wrapper. so, syntax is equal to gnu bc. [learn syntax more](https://www.gnu.org/software/bc/manual/html_mono/bc.html)
✔︎ dntk is a NATIVE [The Rust Programming Language](https://rust-lang.org) application.
✔︎ dntk can move cursor, can delete char, can refresh buffer.
✔︎ dntk write color means,
<table>
<tr>
<td>color</td>
<td>means</td>
</tr>
<tr>
<td>cyan</td>
<td>can caluclate & can output</td>
</tr>
<tr>
<td>megenta</td>
<td>can't caluclate, can't output</td>
</tr>
<tr>
<td>yellow</td>
<td>danger input char, output warning</td>
</tr>
<tr>
<td>green</td>
<td>clean buffer message</td>
</tr>
</table>
## ***Current dntk's version: v2.1.18***
Download Page: https://github.com/nnao45/dntk/releases/latest
## Platform
dntk support multi-platform 😊 mac, linux, freebsd, and **windows**!!!
- i686-osx
- x86_64-osx
- i686-linux
- x86_64-linux
- i686-windows
- x86_64-windows
- i686-freebsd
- x86_64-freebsd
## Install
### Mac
```bash
$ brew install nnao45/dntk/dntk
```
### Linux
```bash
$ wget https://github.com/nnao45/dntk/releases/download/v2.1.18/dntk-v2.1.18-x86_64-unknown-linux-musl.zip
$ unzip dntk-v2.1.18-x86_64-unknown-linux-musl.zip
```
### Windows
```bash
$ wget https://github.com/nnao45/dntk/releases/download/v2.1.18/dntk-v2.1.18-x86_64-pc-windows-msvc.zip
$ unzip dntk-v2.1.18-x86_64-pc-windows-msvc.zip
```
### FreeBSD
```bash
$ wget https://github.com/nnao45/dntk/releases/download/v2.1.18/dntk-v2.1.18-x86_64-unknown-freebsd.zip
$ unzip dntk-v2.1.18-x86_64-unknown-freebsd.zip
```
### Cargo
```bash
$ cargo install dntk
```
### zplug
```bash
$ zplug 'nnao45/dntk', as:command, from:gh-r
```
### Docker
Can use dntk docker image,
Look!! Very light weight!!🚀
```bash
$ docker images nnao45/dntk
REPOSITORY TAG IMAGE ID CREATED SIZE
nnao45/dntk latest 3a37b5d989b5 2 hours ago 10.5MB
```
And run,
```bash
$ docker run -it --rm nnao45/dntk:latest
```
### And...
```bash
$ echo 'alias bc=dntk' >> ~/.bashrc
$ echo 'alias bc=dntk' >> ~/.zshrc
```
All OK!! 😎
## Options
```
❯❯❯ dntk -h
Command line's multi-platform interactive calculator, GNU bc wrapper.
USAGE:
dntk [FLAGS] [OPTIONS]
FLAGS:
-h, --help Prints help information
--once Run at only once
-q, --quiet No print information message
--show-limits Print the local limits enforced by the local version of bc, and quit
-V, --version Prints version information
-w, --white Set White color in a output
OPTIONS:
-b, --bc-path <bc_path> Use a specific bc command path [default: bc]
-i, --inject <inject> Pre-run inject statement to the dntk [default: ]
-s, --scale <scale> Number of truncated after the decimal point [default: 20]
```
## Windows Support
You may install bc.exe and set PATH.
```bash
$ choco install gnuwin
$ # or
$ wget wget https://embedeo.org/ws/command_line/bc_dc_calculator_windows/bc-1.07.1-win32-embedeo-02.zip
$ unzip bc-1.07.1-win32-embedeo-02.zip
```
## Keybind
### Basic Key
<table>
<tr>
<td>key</td>
<td>feature</td>
</tr>
<tr>
<td>[, ←</td>
<td>cursor move to left</td>
</tr>
<tr>
<td>], →</td>
<td>cursor move to right</td>
</tr>
<tr>
<td>0~9</td>
<td>Sendkey this number</td>
</tr>
<tr>
<td>Ctrl+C, Enter</td>
<td>Finish dntk app</td>
</tr>
<tr>
<td>Delete, Backspace</td>
<td>Delete current char</td>
</tr>
<tr>
<td>@</td>
<td>Clean buffer</td>
</tr>
</table>
### Basic Operation
<table>
<tr>
<td>key</td>
<td>feature</td>
</tr>
<tr>
<td>+</td>
<td>plus</td>
</tr>
<tr>
<td>-</td>
<td>minus</td>
</tr>
<tr>
<td>*</td>
<td>multiplication</td>
</tr>
<tr>
<td>/</td>
<td>division</td>
</tr>
<tr>
<td>^</td>
<td>exponentiation</td>
</tr>
<tr>
<td>%</td>
<td>remainder</td>
</tr>
</table>
### Operation for Logical
<table>
<tr>
<td>key</td>
<td>feature</td>
</tr>
<tr>
<td>!</td>
<td>boolean, relational</td>
</tr>
<tr>
<td>|</td>
<td>boolean</td>
</tr>
<tr>
<td>&</td>
<td>boolean</td>
</tr>
<tr>
<td>></td>
<td>relational</td>
</tr>
<tr>
<td><</td>
<td>relational</td>
</tr>
<tr>
<td>=</td>
<td>relational</td>
</tr>
</table>
### Using Function
you can use under function.
<table>
<tr>
<td>function</td>
<td>key</td>
<td>feature</td>
</tr>
<tr>
<td>(x)</td>
<td>()</td>
<td>Simple round bracket</td>
</tr>
<tr>
<td>sin(x)</td>
<td>s()</td>
<td>Sin of trigonometric function</td>
</tr>
<tr>
<td>cos(x)</td>
<td>c()</td>
<td>Cosin of trigonometric function</td>
</tr>
<tr>
<td>atan(x)</td>
<td>a()</td>
<td>Tangent of inverse trigonometric function</td>
</tr>
<tr>
<td>log(x)</td>
<td>l()</td>
<td>Logarithm function</td>
</tr>
<tr>
<td>exp(x)</td>
<td>e()</td>
<td>Exponential function</td>
</tr>
<tr>
<td>sqrt(x)</td>
<td>sqrt()</td>
<td>Return square root of the expression function</td>
</tr>
<tr>
<td>j(n,x)</td>
<td>j()</td>
<td>The n-order Bessel function</td>
</tr>
</table>
more detail 👉 https://www.gnu.org/software/bc/manual/html_mono/bc.html
## Pipe Use...
```bash
$ echo "123 * 2" | dntk
246
```
behave, like bc ☺️
***Have a nice rust hacking days***:sparkles::wink:
## Writer & License
dntk was writed by nnao45 (WORK:Infrastructure Engineer, Twitter:@nnao45, MAIL:n4sekai5y@gmail.com).
This software is released under the MIT License, see LICENSE.