# Crystal

## Installation

Crystalをインストールする.

```bash
$ curl -fsSL https://crystal-lang.org/install.sh | $ sudo bash
```

## Version

```bash
$ crystal --version
Crystal 1.14.0 [dacd97bcc] (2024-10-09)

LLVM: 18.1.6
Default target: x86_64-unknown-linux-gnu
```

## Example

````{tab} Code
`hello.cr`:

```cr
puts "Hello, World!"
```
````

````{tab} Terminal
```bash
$ crystal hello.cr
Hello, World!
```
````