pub fn print_help() {
    println!(r##"{} v{} - {}

Show help:
$ runrs -h|--help

Show template:
$ runrs -t|--template [--output script.rs]

Show scriptions:
$ runrs -l|--list

Install script:
$ runrs -i|--install <script.rs>

Run script:
$ runrs <script.rs> [arguments]

Binaries dir:
~/Library/Caches/rust-script/binaries/release/

Environment variables:
┌──────────────────────┬────────────────────────────────────────────────┐
│ Variable             │ Description                                    │
├──────────────────────┼────────────────────────────────────────────────┤
│ HOME                 │ User home, default from OS system              │
│ RUNRS_SKIP_CACHE     │ Skip compiled cached file, `bool`              │
│ RUNRS_REBUILD        │ Force rebuild, `bool`                          │
│ RUNRS_SILENT_BUILD   │ Build new binary in silent mode, `bool`        │
│ RUNRS_RUST_SCRIPT    │ `rust_script` command line bin file            │
│ RUNRS_MAX_SCRIPT_LEN │ Max script length, default 1MB                 │
└──────────────────────┴────────────────────────────────────────────────┘
> Type `bool`: `true`, `yes`, `on` or `1` for true, otherwise false
"##,
             env!("CARGO_PKG_NAME"),
             env!("CARGO_PKG_VERSION"),
             env!("CARGO_PKG_DESCRIPTION")
    );
}