diff --git a/README.md b/README.md
index 4060a3a..b8b7027 100644
--- a/README.md
+++ b/README.md
@@ -94,7 +94,22 @@ $ rvm install 2.1.2
 $ rvm install 2.1.10
 $ rvm --default use 2.1.10
 ```
-
+## 若以上安裝RVM失敗可用另一種方式安裝RVM和ruby
+```sh
+$ sudo apt-get install software-properties-common
+$ sudo apt-add-repository -y ppa:rael-gc/rvm
+$ sudo apt-get update
+$ sudo apt-get install rvm
+$ echo 'source "/etc/profile.d/rvm.sh"' >> ~/.bashrc
+$ source "/etc/profile.d/rvm.sh"
+$ rvm install 2.1.2
+$ rvm install 2.1.10
+$ rvm --default use 2.1.10
+```
+## 安裝screen
+```sh
+$ sudo apt-get install screen
+```
 ## 安裝 R4.5
 ### 一、建立 ssh key pair
 ```sh