rust国内安装

安装，官方源国内一般连不上，需要使用镜像安装，有三个安装选项，默认就好。
会安装到当前用户下，不需要root用户或者sudo权限。
https://rustup.rs/#

[postgres@pg12 ~]$ export RUSTUP_DIST_SERVER=https://mirrors.ustc.edu.cn/rust-static
[postgres@pg12 ~]$ export RUSTUP_UPDATE_ROOT=https://mirrors.ustc.edu.cn/rust-static/rustup
[postgres@pg12 ~]$ export PATH="$HOME/.cargo/bin:$PATH"
[postgres@pg12 ~]$ curl https://sh.rustup.rs -sSf | sh



Rust is installed now. Great!

To get started you may need to restart your current shell.
This would reload your PATH environment variable to include
Cargo's bin directory ($HOME/.cargo/bin).

To configure your current shell, run:
source "$HOME/.cargo/env"

安装后，会自动添加环境变量，不需要手动添加
~/.bash_profile

. "$HOME/.cargo/env"

当前shell会话可以手动设置环境变量，或者重新登陆shell

source "$HOME/.cargo/env"

配置国内仓库，类似于Go 的 https://goproxy.cn

[postgres@pg12 ~]$ cat ~/.cargo/config
[source.crates-io]
registry = "git://mirrors.ustc.edu.cn/crates.io-index"

[postgres@pg12 ~]$ rustc --version
rustc 1.73.0 (cc66ad468 2023-10-03)
[postgres@pg12 ~]$ cargo --version
cargo 1.73.0 (9c4383fb5 2023-08-26)
[postgres@pg12 ~]$ rustup --version
rustup 1.26.0 (5af9b9484 2023-04-05)
info: This is the version for the rustup toolchain manager, not the rustc compiler.
info: The currently active `rustc` version is `rustc 1.73.0 (cc66ad468 2023-10-03)`

卸载的方法

rustup self uninstall

hello world

[postgres@pg12 ~]$ mkdir rustlearn
[postgres@pg12 ~]$ cd rustlearn/
/home/postgres/rustlearn
[postgres@pg12 rustlearn]$ cargo new --bin hello
     Created binary (application) `hello` package

编译运行

[postgres@pg12 hello]$ cargo run
   Compiling hello v0.1.0 (/home/postgres/rustlearn/hello)
    Finished dev [unoptimized + debuginfo] target(s) in 0.46s
     Running `target/debug/hello`
Hello, world!

[postgres@pg12 hello]$ ./target/debug/hello
Hello, world!

清理

[postgres@pg12 hello]$ cargo clean

目录结构

[postgres@pg12 rustlearn]$ ll -a hello
total 8
drwxrwxr-x 4 postgres postgres  65 Oct 13 06:38 .
drwxrwxr-x 3 postgres postgres  19 Oct 13 06:38 ..
-rw-rw-r-- 1 postgres postgres 174 Oct 13 06:38 Cargo.toml
drwxrwxr-x 6 postgres postgres 103 Oct 13 06:38 .git
-rw-rw-r-- 1 postgres postgres   8 Oct 13 06:38 .gitignore
drwxrwxr-x 2 postgres postgres  21 Oct 13 06:38 src
[postgres@pg12 rustlearn]$ tree hello
hello
├── Cargo.toml
└── src
    └── main.rs

初始化文件

[postgres@pg12 rustlearn]$ cat hello/Cargo.toml
[package]
name = "hello"
version = "0.1.0"
edition = "2021"

# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

[dependencies]
[postgres@pg12 rustlearn]$ cat hello/src/main.rs
fn main() {
    println!("Hello, world!");
}

cargo会自动初始化git，相当于
git init

[postgres@pg12 rustlearn]$ cat hello/.git/config
[core]
        bare = false
        repositoryformatversion = 0
        filemode = true
        logallrefupdates = true
[postgres@pg12 rustlearn]$ cd hello/
[postgres@pg12 hello]$ git status
# On branch master
#
# Initial commit
#
# Untracked files:
#   (use "git add <file>..." to include in what will be committed)
#
#       .gitignore
#       Cargo.toml
#       src/
nothing added to commit but untracked files present (use "git add" to track)

参考文献
Rust安装及国内加速