Update README.md

README.md

@@ -12,7 +12,7 @@ This script is used to reinstall the Linux OS of a KVM-based VPS or a Hyper-V vi
 
 ## Usage
 
-    sudo bash -c "$(curl -fsSL https://github.com/bohanyang/debi/raw/master/debi.sh)" -- <OPTIONS>
+    curl -fL https://raw.githubusercontent.com/bohanyang/debi/master/debi.sh | sudo bash -s -- <OPTIONS>
 
 ## Available Options