diff --git a/install_linux.sh b/install_ubuntu.sh
similarity index 100%
rename from install_linux.sh
rename to install_ubuntu.sh
diff --git a/touch_env.sh b/touch_env.sh
index 06dc864d..01b243ba 100755
--- a/touch_env.sh
+++ b/touch_env.sh
@@ -6,7 +6,6 @@ DEFAULT_RTT_PACKAGE_URL=https://github.com/RT-Thread/packages.git
 
 env_dir=$HOME/.env
 if ! [ -d $env_dir ]; then
-    echo 1
     package_url=${RTT_PACKAGE_URL:-$DEFAULT_RTT_PACKAGE_URL}
     mkdir $env_dir
     mkdir $env_dir/local_pkgs
@@ -17,3 +16,9 @@ if ! [ -d $env_dir ]; then
     git clone https://github.com/RT-Thread/env.git $env_dir/tools/scripts
     echo 'export PATH=$HOME/.env/tools/scripts:$PATH' > $env_dir/env.sh
 fi
+
+RTT_ROOT=$HOME/rt-thread
+# you can download rt-thread to another directory by changing RTT_ROOT
+if ! [ -d $RTT_ROOT ]; then
+    git clone https://github.com/RT-Thread/rt-thread.git $RTT_ROOT
+fi