如何从stdout输出到golang中的字符串 [英] How to get output from stdout into a string in golang

问题描述

我有以下代码将数据从stdout输出到文件:

I have the following code which outputs data from stdout to a file:

cmd := exec.Command("ls","lh")
outfile, err := os.Create("./out.txt")
if err != nil {
    panic(err)
}
defer outfile.Close()

stdoutPipe, err := cmd.StdoutPipe()
if err != nil {
    panic(err)
}

writer := bufio.NewWriter(outfile)
defer writer.Flush()

err = cmd.Start()
if err != nil {
    panic(err)
}

go io.Copy(writer, stdoutPipe)
cmd.Wait()

我需要将stdout的输出转换为字符串值而不是文件.我该如何实现?

I need to get the output from stdout into a string value instead of a file. How do I achieve that?

也许还有另一个函数可以让我将io.Copy行更改为io.Copy(myStringVariable，stdoutPipe)，因为我需要读取命令的输出并对其进行一些处理?

Is there perhaps another function that will allow me to change the io.Copy line to go io.Copy(myStringVariable, stdoutPipe) as I need to read the output of the command and apply some processing to it?

预先感谢

推荐答案

您不需要管道，编写器，goroutine等.只需使用

You don't need the pipe, writer, goroutine, etc. Just use Cmd.Output

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

您可以根据需要使用 string(out)

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