fix: 解决网站设置用户/组报错的问题 (#710)

backend/utils/cmd/cmd.go

@@ -88,3 +88,14 @@ func Execf(cmdStr string, a ...interface{}) (string, error) {
 	}
 	return stdout.String(), nil
 }
+
+func HasNoPasswordSudo() bool {
+	cmd := exec.Command("sudo", "-v")
+	err := cmd.Run()
+	if err != nil {
+		return false
+	}
+	cmd2 := exec.Command("sudo", "-n", "ls")
+	err2 := cmd2.Run()
+	return err2 == nil
+}