如何包装交互式命令 [英] How wrap a command that is interactive

问题描述

我正在构建一个ftp包装器，在生成之前它会做一些事情，我可以很容易地在shell脚本中完成它，但是想知道如何在运行中完成它

I am building an ftp wrapper that does some stuff before I spawn, I could easily do it in a shell script but wondering how I could do it in go

exec.Command适用于简单命令.

While exec.Command works for simple commands.

out, err := exec.Command("ls").Output() // Works

如何包装交互式命令，例如ftp

How do I wrap commands that are interactive e.g., ftp

out, err := exec.Command("ftp").Output()

它刚刚退出.我该如何处理stdin?

It just exits. How do I deal with stdin ?

例如bash等效项:

> ./t.sh 
Welcome to myftp 

ftp> open blahblah.com

> cat t.sh 
#!/bin/bash
echo "Welcome to myftp "
#extra commands such as auth/authoriz.. etc.,
shift
echo "$@"
ftp

相当于c ++:

int main() {
    system("ftp");
    return 0;
}

推荐答案

我可能会做这样的事情，它更本地化并且不涉及外部程序包

I would probably do something like this which is more native and doesn't involve an external package

package main
import (
    "os"
    "os/exec"
)

func main() {

    cmd := exec.Command("ls")
    // redirect the output to terminal
    cmd.Stdout = os.Stdout
    cmd.Stderr = os.Stderr

    cmd.Run()

}

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