package mainimport (    "bufio"    "fmt"    "os"    "strings")// StringPrompt asks for a string value using the labelfunc StringPrompt(label string) string {    var s string    r := bufio.NewReader(os.Stdin)    for {        fmt.Fprint(os.Stderr, label+" ")        s, _ = r.ReadString('
')        if s != "" {            break        }    }    return strings.TrimSpace(s)}func main() {    name := StringPrompt("What is your name?")    fmt.Printf("Hello, %s!
", name)}

package mainimport (    "fmt"    "os"    "syscall"    "golang.org/x/term")// PasswordPrompt asks for a string value using the label.// The entered value will not be displayed on the screen// while typing.func PasswordPrompt(label string) string {    var s string    for {        fmt.Fprint(os.Stderr, label+" ")        b, _ := term.ReadPassword(int(syscall.Stdin))        s = string(b)        if s != "" {            break        }    }    fmt.Println()    return s}func main() {    password := PasswordPrompt("What is your password?")    fmt.Printf("Oh, I see! Your password is %q
", password)}

package mainimport (    "bufio"    "fmt"    "os"    "strings")// YesNoPrompt asks yes/no questions using the label.func YesNoPrompt(label string, def bool) bool {    choices := "Y/n"    if !def {        choices = "y/N"    }    r := bufio.NewReader(os.Stdin)    var s string    for {        fmt.Fprintf(os.Stderr, "%s (%s) ", label, choices)        s, _ = r.ReadString('
')        s = strings.TrimSpace(s)        if s == "" {            return def        }        s = strings.ToLower(s)        if s == "y" || s == "yes" {            return true        }        if s == "n" || s == "no" {            return false        }    }}func main() {    ok := YesNoPrompt("Dev.to is awesome!", true)    if ok {        fmt.Println("Agree!")    } else {        fmt.Println("Huh?")    }}

package mainimport (    "fmt"    "strings"    "github.com/AlecAivazis/survey/v2")func Checkboxes(label string, opts []string) []string {    res := []string{}    prompt := &survey.MultiSelect{        Message: label,        Options: opts,    }    survey.AskOne(prompt, &res)    return res}func main() {    answers := Checkboxes(        "Which are your favourite programming languages?",        []string{            "C",            "Python",            "Java",            "C++",            "C#",            "Visual Basic",            "JavaScript",            "PHP",            "Assembly Language",            "SQL",            "Groovy",            "Classic Visual Basic",            "Fortran",            "R",            "Ruby",            "Swift",            "MATLAB",            "Go",            "Prolog",            "Perl",        },    )    s := strings.Join(answers, ", ")    fmt.Println("Oh, I see! You like", s)}

$ echo "Petr" | go run main.goWhat is your name? Hello, Petr!

package mainimport (    "fmt"    "syscall"    "golang.org/x/term")func main() {    if term.IsTerminal(int(syscall.Stdin)) {        fmt.Println("Terminal is interactive! You're good to use prompts!")    } else {        fmt.Println("Terminal is not interactive! Consider using flags or environment variables!")    }}

$ echo "Hello" | go run main.goTerminal is not interactive! Consider using flags or environment variables!$ go run main.goTerminal is interactive! You're good to use prompts!