dsen53898 2017-03-20 09:31
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想要通过使用Go程序运行具有标志和参数的二进制文件

I want to run a binary file with flags. If i directly run the binary it will be like following inside a golang program.

./test --flag1 arg1 --flag2 arg2

I was trying to run by the use of os.exec.

code: reslt ,err:= exec.Command("./test","--flag1", "arg1", "--flag2", "arg2").Output

It is giving error:

Exit status 2

Can anyone help on this?

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  • dongtuo1482 2017-03-20 11:00
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    output, err := exec.Command("./test","flag1", "arg1", "flag2", "arg2").Output()

    Output returns both a slice of bytes and an error. As indicated by the error, you are only expecting a single return value, whereas Output returns two.

    EDIT: As for debugging your second problem, get the stderr from the command:

    cmd := exec.Command("./test","flag1", "arg1", "flag2", "arg2")
    var stderr bytes.Buffer
    cmd.Stderr = &stderr  
    err := cmd.Run()
    if err != nil {
        fmt.Println(stderr.String())
        return
    }
    
    本回答被题主选为最佳回答 , 对您是否有帮助呢?
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