If you are on a GNU/Linux operating system, regardless of its distribution, and you are also developing a Rust-based application that requires handling user keyboard input in raw mode (without the need to press Enter), then this article can help you address that:

We add k_board to the project.

cargo add k_board

We implement the logic:

use k_board::{Keyboard, Keys};

fn main() {
    for key in Keyboard::new() {
        match key {
            Keys::Ctrl('s') => //paste,
            Keys::Ctrl('c') => //copy,
            Keys::Enter => break,
            _ => {}
        }
    }
}