demo terminal app

terminal.go

package xyz

import (
	"io"
	"os"
	"golang.org/x/crypto/ssh/terminal"
)

type readerWriter struct {
	io.Reader
	io.Writer
}

func run(stdin *os.File, stdout io.Writer) (err error) {
	term := terminal.NewTerminal(readerWriter{stdin, stdout}, "$> ")

	stdinFD := int(stdin.Fd())
	stdinState, err := terminal.MakeRaw(stdinFD)
	if err != nil {
		return err
	}
	defer func() {
		terminal.Restore(stdinFD, stdinState)
	}()

	for {
		prompt := "$> "
		term.SetPrompt(prompt)
		line, err := term.ReadLine()
		if err != nil {
			return err
		}
		//TODO: handle the line
		_ = line
	}
	return nil
}

Thanks!