TranslateProject/translated/tech/20171028 Let Us Play Piano In Terminal Using Our PC Keyboard.md

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让我们使用 PC 键盘在终端演奏钢琴
======
厌倦了工作?那么来吧,让我们弹弹钢琴!是的,你没有看错。谁需要真的钢琴啊?我们可以用 PC 键盘在命令行下就能弹钢琴。向你们介绍一下 **Piano-rs** - 这是一款用 Rust 语言编写的,可以让你用 PC 键盘在终端弹钢琴的简单工具。它免费,开源,而且基于 MIT 协议。你可以在任何支持 Rust 的操作系统中使用它。
### Piano-rs使用 PC 键盘在终端弹钢琴
#### 安装
确保系统已经安装了 Rust 编程语言。若还未安装,运行下面命令来安装它。
```
curl https://sh.rustup.rs -sSf | sh
```
安装程序会问你是否默认安装还是自定义安装还是取消安装。我希望默认安装,因此输入 **1** (数字一)。
```
info: downloading installer
Welcome to Rust!
This will download and install the official compiler for the Rust programming
language, and its package manager, Cargo.
It will add the cargo, rustc, rustup and other commands to Cargo's bin
directory, located at:
/home/sk/.cargo/bin
This path will then be added to your PATH environment variable by modifying the
profile files located at:
/home/sk/.profile
/home/sk/.bash_profile
You can uninstall at any time with rustup self uninstall and these changes will
be reverted.
Current installation options:
default host triple: x86_64-unknown-linux-gnu
default toolchain: stable
modify PATH variable: yes
1) Proceed with installation (default)
2) Customize installation
3) Cancel installation
**1**
info: syncing channel updates for 'stable-x86_64-unknown-linux-gnu'
223.6 KiB / 223.6 KiB (100 %) 215.1 KiB/s ETA: 0 s
info: latest update on 2017-10-12, rust version 1.21.0 (3b72af97e 2017-10-09)
info: downloading component 'rustc'
38.5 MiB / 38.5 MiB (100 %) 459.3 KiB/s ETA: 0 s
info: downloading component 'rust-std'
56.7 MiB / 56.7 MiB (100 %) 220.6 KiB/s ETA: 0 s
info: downloading component 'cargo'
3.7 MiB / 3.7 MiB (100 %) 173.5 KiB/s ETA: 0 s
info: downloading component 'rust-docs'
4.1 MiB / 4.1 MiB (100 %) 224.0 KiB/s ETA: 0 s
info: installing component 'rustc'
info: installing component 'rust-std'
info: installing component 'cargo'
info: installing component 'rust-docs'
info: default toolchain set to 'stable'
stable installed - rustc 1.21.0 (3b72af97e 2017-10-09)
Rust is installed now. Great!
To get started you need Cargo's bin directory ($HOME/.cargo/bin) in your PATH
environment variable. Next time you log in this will be done automatically.
To configure your current shell run source $HOME/.cargo/env
```
登出然后重启系统来将 cargo 的 bin 目录纳入 PATH 变量中。
校验 Rust 是否正确安装:
```
$ rustc --version
rustc 1.21.0 (3b72af97e 2017-10-09)
```
太棒了Rust 成功安装了。是时候构建 piano-rs 应用了。
使用下面命令克隆 Piano-rs 仓库:
```
git clone https://github.com/ritiek/piano-rs
```
上面命令会在当前工作目录创建一个名为 "piano-rs" 的目录并下载所有内容到其中。进入该目录:
```
cd piano-rs
```
最后,运行下面命令来构建 Piano-rs
```
cargo build --release
```
编译过程要花上一阵子。
#### Usage
编译完成后,在 **piano-rs** 目录中运行下面命令:
```
./target/release/piano-rs
```
这就我们在终端上的钢琴键盘了!可以开始弹指一些音符了。按下按键可以弹奏相应音符。使用 **左/右** 方向键可以在弹奏时调整音频。而,使用 **上/下** 方向键可以在弹奏时调整音长。
[![][1]][2]
Piano-rs 使用与 [**multiplayerpiano.com**][3] 一样的音符和按键。另外,你可以使用[**这些音符 **][4] 来学习弹指各种流行歌曲。
要查看帮助。输入:
```
$ ./target/release/piano-rs -h
```
```
piano-rs 0.1.0
Ritiek Malhotra <ritiekmalhotra123@gmail.com>
Play piano in the terminal using PC keyboard.
USAGE:
piano-rs [OPTIONS]
FLAGS:
-h, --help Prints help information
-V, --version Prints version information
OPTIONS:
-c, --color <COLOR> Color of block to generate when a note is played (Default: "red")
-d, --duration <DURATION> Duration to play each note for, where 0 means till the end of note (Default: 0)
-s, --sequence <SEQUENCE> Frequency sequence from 0 to 5 to begin with (Default: 2)
```
我必须承认这是个超级酷的项目。对于那些买不起钢琴的人,很推荐使用这款应用。
祝你周末愉快!!
此致敬礼!
--------------------------------------------------------------------------------
via: https://www.ostechnix.com/let-us-play-piano-terminal-using-pc-keyboard/
作者:[SK][a]
译者:[lujun9972](https://github.com/lujun9972)
校对:[校对者ID](https://github.com/校对者ID)
本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译,[Linux中国](https://linux.cn/) 荣誉推出
[a]:https://www.ostechnix.com/author/sk/
[1]:data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7
[2]:http://www.ostechnix.com/wp-content/uploads/2017/10/Piano.png ()
[3]:http://www.multiplayerpiano.com/
[4]:https://pastebin.com/CX1ew0uB