How to: Installing a pre-compiled binary
The pre-compiled binaries come in `tar.xz` files. To decompress them, make sure
`xz` is installed.
On Debian/Ubuntu/Mint, you can `apt install xz-utils`.
On Redhat/Fedora/CentOS, `yum -y install xz`.

A simple installer may do something like:

```bash
scversion="stable" # or "v0.4.7", or "latest"
wget -qO- "https://github.com/koalaman/shellcheck/releases/download/${scversion?}/shellcheck-${scversion?}.linux.x86_64.tar.xz" | tar -xJv
cp "shellcheck-${scversion}/shellcheck" /usr/bin/
shellcheck --version
```