在Go中执行二进制文件时获取输入

Question

I am using below code snippet :-

command:= exec.Command("./"+order)

out, err := command.Output()
if err != nil {
   log.Println(err)
}

fmt.Println(string(out))

here, "order" is the variable with name of binary in the current directory. When I run this code it doesn't ask for input and run through the binary till the end of it printing output statement. How do I get input for my binary executable while running it?

I have tried using python in go also but to no effect.

Answer 1

This code asks for your name and then passes it to ./hello binary which reads first argument and outputs the first argument.

package main

import (
    "bufio"
    "fmt"
    "log"
    "os"
    "os/exec"
)

func main() {
    reader := bufio.NewReader(os.Stdin)
    fmt.Print("What's your name: ")
    name, _ := reader.ReadString('
')
    command := exec.Command("./hello", name)

    out, err := command.Output()
    if err != nil {
        log.Println(err)
    }
    fmt.Println(string(out))
}

hello.go:

package main

import (
    "fmt"
    "os"
)

func main() {
    fmt.Println(fmt.Sprintf("hello %s", os.Args[1]))
}