Question

I built a tiny menu to use in a bash terminal with multiple options to select via number keys.

#!/bin/bash
PS3='Teleport to ... '
options=("→ option 1" "→ option 2" "Quit")
select opt in "${options[@]}"
do
    case $opt in
        "→ option 1")
            echo "option 1"
            break
            ;;
        "→ option 2")
            echo "option 2"
            break
            ;;
        "Quit")
            break
            ;;
        *) echo invalid option
            break
            ;;
    esac
done

At the moment I still need to confirm the selection by pressing enter. Is it possible to make the script respond to the input of the first pressed key directly?

Answer 1

read -n 1 reads one character. You cannot use select with it, though, so you have to write the while loop yourself.