diff --git a/step2/2.sh b/step2/2.sh
index 504ffe7..9a54f99 100644
--- a/step2/2.sh
+++ b/step2/2.sh
@@ -1,4 +1,16 @@
 #!/bin/bash
 #/bin/sbin
 cd /data/workspace/myshixun/step2/
-sh ./wenti.sh 
\ No newline at end of file
+#sh ./wenti.sh 
+# 执行学生代码文件
+
+result=$(grep -c -E "China|Mars" a.sh)
+
+if [ $result -eq 0 ];then
+        echo `sh a.sh` >/tmp/a.txt
+        python3 b.py
+
+else
+        echo "请正确编写代码,不要手动echo 差集" 
+fi
+