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wasmtime/docs/cli.md
Dan Gohman ac0ee271b1 Log to stderr by default. (#1266)
Change the default from file-per-thread-logger to pretty-env-logger,
which is more common in Rust projects, and change the option from `-d`
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Using the wasmtime CLI

In addition to the embedding API which allows you to use Wasmtime as a library, the Wasmtime project also provides a wasmtime CLI tool to conveniently execute WebAssembly modules from the command line.

This section will provide a guide to the wasmtime CLI and major functionality that it contains. In short, however, you can execute a WebAssembly file (actually doing work as part of the start function) like so:

$ wasmtime foo.wasm

Or similarly if you want to invoke a "start" function, such as with WASI modules, you can execute

$ wasmtime --invoke _start foo.wasm

For more information be sure to check out how to install the CLI, the list of options you can pass, and how to enable logging.