diff --git a/.idea/compiler.xml b/.idea/compiler.xml
index 7d7ec2e..245a82c 100644
--- a/.idea/compiler.xml
+++ b/.idea/compiler.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="CompilerConfiguration">
-    <bytecodeTargetLevel target="11" />
+    <bytecodeTargetLevel target="1.8" />
   </component>
 </project>
\ No newline at end of file
diff --git a/.idea/misc.xml b/.idea/misc.xml
index a740c72..f102024 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -5,7 +5,7 @@
       <configuration PROFILE_NAME="Debug" CONFIG_NAME="Debug" />
     </configurations>
   </component>
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_11" default="true" project-jdk-name="11" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" default="false" project-jdk-name="11" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/build/classes" />
   </component>
   <component name="ProjectType">
diff --git a/app/src/main/java/qianmu/container/util/RootCmdUtil.java b/app/src/main/java/qianmu/container/util/RootCmdUtil.java
index 196473b..2571197 100644
--- a/app/src/main/java/qianmu/container/util/RootCmdUtil.java
+++ b/app/src/main/java/qianmu/container/util/RootCmdUtil.java
@@ -32,7 +32,7 @@ public final class RootCmdUtil {
     /**
      * 执行命令并且输出结果
      */
-    private static String execRootCmd(String cmd) {
+    public static String execRootCmd(String cmd) {
         String result = "";
         DataOutputStream dos = null;
         DataInputStream dis = null;