diff --git a/scripts/zsh_cleanup.sh b/scripts/zsh_cleanup.sh
index c12deae..79c84b1 100755
--- a/scripts/zsh_cleanup.sh
+++ b/scripts/zsh_cleanup.sh
@@ -9,11 +9,18 @@ openAIConfigPath="$CODEX_CLI_PATH/src/openaiapirc"
 zshrcPath="$HOME/.zshrc"
 
 # 1. Remove settings in .zshrc
-sed -i '' '/### Codex CLI setup - start/,/### Codex CLI setup - end/d' $zshrcPath
+# Check if the current system is Darwin (i.e. MacOS)
+if [[ "$OSTYPE" == "Darwin" ]]; then
+    # Command to execute on MacOS
+    sed -i '' '/### Codex CLI setup - start/,/### Codex CLI setup - end/d' $zshrcPath
+else
+    # Command to execute on Linux
+    sed -i '/### Codex CLI setup - start/,/### Codex CLI setup - end/d' $zshrcPath
+fi
 echo "Removed settings in $zshrcPath if present"
 
 # 2. Remove opanaiapirc in /.config
 rm -f $openAIConfigPath
 echo "Removed $openAIConfigPath"
 
-echo "Codex CLI clean up completed. Please open a new zsh to continue."
\ No newline at end of file
+echo "Codex CLI clean up completed. Please open a new zsh to continue."
diff --git a/scripts/zsh_setup.sh b/scripts/zsh_setup.sh
index 312fc0f..30465ce 100755
--- a/scripts/zsh_setup.sh
+++ b/scripts/zsh_setup.sh
@@ -43,7 +43,15 @@ validateSettings()
 configureZsh()
 {
     # Remove previous settings
-    sed -i '' '/### Codex CLI setup - start/,/### Codex CLI setup - end/d' $zshrcPath
+    
+    # Check if the current system is Darwin (i.e. MacOS)
+    if [[ "$OSTYPE" == "Darwin" ]]; then
+        # Command to execute on MacOS
+        sed -i '' '/### Codex CLI setup - start/,/### Codex CLI setup - end/d' $zshrcPath
+    else
+        # Command to execute on Linux
+        sed -i '/### Codex CLI setup - start/,/### Codex CLI setup - end/d' $zshrcPath
+    fi
     echo "Removed previous settings in $zshrcPath if present"
 
     # Update the latest settings
@@ -116,4 +124,4 @@ echo -e "*** Setup complete! ***\n";
 echo "***********************************************"
 echo "Open a new zsh terminal, type '#' followed by"
 echo "your natural language command and hit Ctrl + G!"
-echo "***********************************************"
\ No newline at end of file
+echo "***********************************************"