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```shell
rustup target add wasm32-wasi
```
```shell
cargo build --target=wasm32-wasi
```
```shell
$ ls target/
debug wasm32-wasi
```
运行时Runtime
运行这个文件需要一个运行时Runtime。你也可以把这个理解成一个“容器”“虚拟机”什么的都行。但是准确的叫法是运行时。
目前常见的运行时有 wasmtimewasmer 等。
我们这次用 wasmtime 来运行吧。
`curl https://wasmtime.dev/install.sh -sSf | bash`
or download from:
https://github.com/bytecodealliance/wasmtime/releases
```
$ wasmtime --dir=. target/wasm32-wasi/debug/wasi.wasm
Hello, world!
```
https://mp.weixin.qq.com/s/VYkUvD1NpRdx_qoIdCCq8w - _【Rust每周一知】Rust, wasm, wasi 试玩儿_