diff --git a/run.sh b/run.sh
index 0b0f004..7bb6b7c 100755
--- a/run.sh
+++ b/run.sh
@@ -1,5 +1,5 @@
 #/bin/sh
-cargo run "$@" > blog-tmp.html
+cargo run -- "$@" > blog-tmp.html
 sed template.html -e '/INSERT_HERE/{
     r blog-tmp.html
     d
diff --git a/src/main.rs b/src/main.rs
index 314de82..243b244 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -3,24 +3,32 @@ use markdown::to_html;
 use rss::{Channel, Item, ItemBuilder};
 
 fn main() -> io::Result<()> {
-    // takes directory of markdown files as only argument, outputs
-    // html output into stdout (TODO make )
-    let mut channel = Channel::default();
-    channel.title = "MDF blog huge".to_string();
-    channel.link = "rakarake.xyz".to_string();
-    channel.description = "morbius text wow".to_string();
-    channel.items = std::env::args().skip(1).map(|f| {
-        let contents = std::fs::read_to_string(f.clone())?;
-        let html = to_html(&contents);
-        // TODO get the title from the document, read other metadata
-        Ok(ItemBuilder::default()
-            .title(f)
-            .description(html)
-            .build()
-        )
-    }).collect::<Result<Vec<Item>, io::Error>>()?;
-    println!("{}", channel.to_string());
+    let posts = std::env::args().skip(2).map(|f| {
+            let contents = std::fs::read_to_string(f.clone())?;
+            Ok(to_html(&contents))
+    }).collect::<Result<Vec<String>, io::Error>>()?;
 
+    if let Some(mode) = std::env::args().skip(1).next() {
+        match mode.as_str() {
+            "rss" => {
+                let mut channel = Channel::default();
+                channel.title = "MDF blog huge".to_string();
+                channel.link = "rakarake.xyz".to_string();
+                channel.description = "morbius text wow".to_string();
+                channel.items = posts.iter().enumerate().map(|(i, p)| {
+                    ItemBuilder::default()
+                        .title(format!("Blog post {i}"))
+                        .description(Some(p.clone()))
+                        .build()                   
+                }).collect();
+                print!("{}", channel);
+            },
+            "html" => {
+                print!("{}", posts.iter().map(|p| format!("<div>{p}</div>")).collect::<Vec<String>>().concat())
+            },
+            _ => eprintln!("need to specify 'rss' or 'html'"),
+        }
+    }
     Ok(())
 }