## Uninstalling
-Uninstalling Rust is as easy as installing it. On Linux or Mac, just run
+Uninstalling Rust is as easy as installing it. On Linux or Mac, run
the uninstall script:
```bash
The nice thing about starting with such a simple program is that you can
quickly verify that your compiler is installed, and that it's working properly.
-Printing information to the screen is also just a pretty common thing to do, so
+Printing information to the screen is also a pretty common thing to do, so
practicing it early on is good.
> Note: This book assumes basic familiarity with the command line. Rust itself
Hello, world!
```
-In Windows, just replace `main` with `main.exe`. Regardless of your operating
+In Windows, replace `main` with `main.exe`. Regardless of your operating
system, you should see the string `Hello, world!` print to the terminal. If you
did, then congratulations! You've officially written a Rust program. That makes
you a Rust programmer! Welcome.
The second important part is the `println!()` line. This is calling a Rust
*[macro]*, which is how metaprogramming is done in Rust. If it were calling a
function instead, it would look like this: `println()` (without the !). We'll
-discuss Rust macros in more detail later, but for now you just need to
+discuss Rust macros in more detail later, but for now you only need to
know that when you see a `!` that means that you’re calling a macro instead of
a normal function.
The first line, `[package]`, indicates that the following statements are
configuring a package. As we add more information to this file, we’ll add other
-sections, but for now, we just have the package configuration.
+sections, but for now, we only have the package configuration.
The other three lines set the three bits of configuration that Cargo needs to
know to compile your program: its name, what version it is, and who wrote it.
With simple projects, Cargo doesn't bring a whole lot over just using `rustc`,
but it will become useful in future. With complex projects composed of multiple
crates, it’s much easier to let Cargo coordinate the build. With Cargo, you can
-just run `cargo build`, and it should work the right way.
+run `cargo build`, and it should work the right way.
## Building for Release