go执行windows或Linux下的cmd命令

//根据端口号查进程pid
func PortToPid(port int) int {
res := -1
var outBytes bytes.Buffer
var cmd *exec.Cmd
goos := runtime.GOOS
switch goos {
case "windows":
cmdStr := fmt.Sprintf("netstat -ano -p tcp | findstr %d", port)
cmd = exec.Command("cmd", "/c", cmdStr)
break
case "linux":
cmdStr := fmt.Sprintf("lsof -i:%d", port)
cmd = exec.Command("bash","-c",cmdStr)
fmt.Println(cmdStr)
fmt.Println(cmd)
break
}
cmd.Stdout = &outBytes
cmd.Run()
resStr := outBytes.String()
r := regexp.MustCompile(`sd+s`).FindAllString(resStr, -1)
if len(r) > 0 {
pid, err := strconv.Atoi(strings.TrimSpace(r[0]))
if err != nil {
res = -1
} else {
res = pid
}
}
return res
}

最后

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