英文:
golang exec.Command returns exit status 1 with bash
问题
我正在尝试使用bash -c在exec.Command中运行多个命令。当我手动运行该命令时，它没有返回错误，命令的输出为nil，但这没关系。我不知道为什么通过golang的exec.Command运行时会返回exit status 1。
以下是我的代码：
cmd := exec.Command("bash", "-c", "blkid -o device | grep -v part | grep /dev/mapper")
_ = cmd.Wait()
stdout, err := cmd.Output()
我甚至尝试了这个来自另一个问题的答案，但也没有成功。重要的是，当我在输出不为nil的虚拟机上运行命令时，命令成功执行，但当我在输出为nil的Centos上尝试时失败。
英文:
I am trying to run multiple commands using bash -c in exec.Command, when i manually run the command, it returns no error the output of command is nil but it's okay. I don't know why it returns exit status 1 when i run it through golang exec.Command.
Here is my code :
cmd := exec.Command("bash", "-c", "blkid -o device | grep -v part | grep /dev/mapper")
_ = cmd.Wait()
stdout, err := cmd.Output()
I even tried this answer from another question, but it also didn't worked out.
The important thing is that when i run command on a vm where output is not nil the command executes successfully, but when i tried this on Centos where output is nil it failed.
答案1
得分: 1
这是因为你需要将命令传递给字符串切片。使用以下代码替代：
cmd := exec.Command("bash", []string{"-c", "blkid -o device | grep -v part | grep /dev/mapper"})
stdout, err := cmd.Output()
英文:
This is because you have to pass the command in the string slice.
Use this instead -
cmd := exec.Command("bash",strings.Fields("-c blkid -o device | grep -v part | grep /dev/mapper"))
stdout, err := cmd.Output()
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