How to add line number for output, prompt for line, then act based on input?

Question

I wrote a shell script like this:

#! /bin/sh ... ls | grep "android" ... 

and the output is :

android1  android2 xx_android ... 

I want to add a number in each file, like this:

    1 android1      2 android2     3 XX_android     ...     please choose your dir number: 

and then wait for the user input line number x, the script reads the line number back then process the corresponding dir. How can we do this in shell ? Thanks !

Answer 1

nl prints line numbers:

ls | grep android | nl