diff --git a/app.js b/app.js
index e0747b8..a7445b7 100644
--- a/app.js
+++ b/app.js
@@ -45,12 +45,15 @@ function buildCmd() {
         if (document.getElementById("extMod").checked === true) {
             script += "git clone https://github.com/google/ngx_brotli.git\n" +
             "git clone https://github.com/openresty/headers-more-nginx-module.git\n" +
-            "cd ngx_brotli/ && git submodule update --init && cd ../" + extractNginxVersion(nginxStr).replace(/\.tar\.gz$/, '') + "/\n";
+            "cd ngx_brotli/\n" +
+            "git submodule update --init\n" +
+            "cd ../" + extractNginxVersion(nginxStr).replace(/\.tar\.gz$/, '') + "/\n";
         } else {
             script += "cd " + extractNginxVersion(nginxStr).replace(/\.tar\.gz$/, '') + "\n";
         }
         script += "cp -r conf /etc/nginx\n" +
-        "mkdir /var/cache/nginx && chown www-data:www-data /var/cache/nginx\n" +
+        "mkdir /var/cache/nginx\n" +
+        "chown www-data:www-data /var/cache/nginx\n" +
         getConfigureStr() + "\n" +
         "make\n" +
         "make install\n" +