【rust】rust安裝，運行第一個Rust 程序 （1）

安裝 Rust

在 Unix 類系統如 Linux 和 macOS 上，打開終端並輸入：

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

回車后安裝過程出現如下顯示：

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:


  /root/.cargo/bin


This path will then be added to your PATH environment variable by modifying the
profile files located at:


  /root/.profile
  /root/.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

選擇 1 ，回車繼續；

這樣會下載一個腳本並開始安裝。如果一切順利，你將會看到：

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'
334.4 KiB / 334.4 KiB (100 %) 191.0 KiB/s ETA:   0 s
info: latest update on 2019-05-14, rust version 1.34.2 (6c2484dc3 2019-05-13)
info: downloading component 'rustc'
 85.3 MiB /  85.3 MiB (100 %) 172.7 KiB/s ETA:   0 s       
info: downloading component 'rust-std'
 56.1 MiB /  56.1 MiB (100 %) 182.4 KiB/s ETA:   0 s       
info: downloading component 'cargo'
  4.3 MiB /   4.3 MiB (100 %) 188.8 KiB/s ETA:   0 s
info: downloading component 'rust-docs'
 10.2 MiB /  10.2 MiB (100 %) 169.4 KiB/s ETA:   0 s
info: installing component 'rustc'
 85.3 MiB /  85.3 MiB (100 %)  12.8 MiB/s ETA:   0 s
info: installing component 'rust-std'
 56.1 MiB /  56.1 MiB (100 %)  13.3 MiB/s ETA:   0 s
info: installing component 'cargo'
info: installing component 'rust-docs'
 10.2 MiB /  10.2 MiB (100 %)   1.2 MiB/s ETA:   0 s
info: default toolchain set to 'stable'

  stable installed - rustc 1.34.2 (6c2484dc3 2019-05-13)


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

如上顯示代表安裝完成；

 

 

rust卸載

卸載 Rust 跟安裝它一樣容易：

rustup self uninstall

 

 

 

第一個Rust程序

依據慣例，打印hello,world

編輯創建文件main.rs

fn main() {
    println!("Hello, world!");
}

 

編譯（類似於C語言的gcc編譯）：

rustc  main.rs

 

運行：

./main

 

輸出：

Hello, world!