Linux知識培訓(xùn)哪家好 千鋒教你在鍵盤上彈鋼琴

確保系統(tǒng)已經(jīng)安裝了 Rust 編程語言。若還未安裝，運行下面命令來安裝它。

curl https://sh.rustup.rs -sSf | sh

（LCTT 譯注：這種直接用 curl 執(zhí)行遠(yuǎn)程 shell 腳本是一種非常危險和不成熟的做法。）

安裝程序會問你是否默認(rèn)安裝還是自定義安裝還是取消安裝。我希望默認(rèn)安裝，因此輸入1（數(shù)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 2018-10-12, rust version 1.21.0 (3b72af97e 2018-10-09)

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 2018-10-09)

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

登出然后重啟系統(tǒng)來將 cargo 的 bin 目錄納入 PATH變量中。

校驗 Rust 是否正確安裝：

$ rustc --version

rustc 1.21.0 (3b72af97e 2018-10-09)

太棒了！Rust 成功安裝了。是時候構(gòu)建 piano-rs 應(yīng)用了。

使用下面命令克隆 Piano-rs 倉庫：

git clone https://github.com/ritiek/piano-rs

上面命令會在當(dāng)前工作目錄創(chuàng)建一個名為piano-rs的目錄并下載所有內(nèi)容到其中。進入該目錄：

cd piano-rs

末了，運行下面命令來構(gòu)建 Piano-rs：

cargo build --release

編譯過程要花上一陣子。

編譯完成后，在piano-rs目錄中運行下面命令：

./target/release/piano-rs

這就是我們在終端上的鋼琴鍵盤了！可以開始彈指一些音符了。按下按鍵可以彈奏相應(yīng)音符。使用左/右方向鍵可以在彈奏時調(diào)整音頻。而，使用上/下方向鍵以在彈奏時調(diào)整音長。

Piano-rs 使用與 multiplayerpiano.com一樣的音符和按鍵。另外，你可以使用這些音符來學(xué)習(xí)彈指各種流行歌曲。

要查看幫助。輸入：

$ ./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)

我必須承認(rèn)這是個超級酷的項目。那些手頭比較緊卻想玩鋼琴的同學(xué)，很適合使用這款應(yīng)用。