diff --git a/keyout.ts b/keyout.ts
index d41403c..93b6281 100644
--- a/keyout.ts
+++ b/keyout.ts
@@ -5,10 +5,21 @@ import { prepareSecretKey } from "./util/secret.ts";
 export const key_out_cmd = new Command();
 key_out_cmd.name("keyout")
 .description("Output the secret key.")
-.action(async () => {
+.option("-f, --file <file:string>", "The file to output the key to. (default: stdout)")
+.option("--dotenv", "Output the key in dotenv format.")
+.action(async ({file, dotenv}) => {
     const key = await prepareSecretKey();
-    const out = await crypto.subtle.exportKey("jwk", key);
-    console.log(JSON.stringify(out));
+    const keyout = await crypto.subtle.exportKey("jwk", key);
+    let out = JSON.stringify(keyout);
+    if (dotenv){
+        out = [`SECRET_KEY='${out}'`].join("\n");
+    }
+
+    if (file){
+        await Deno.writeTextFile(file, out);
+    } else {
+        console.log(out);
+    }
 });
 
 if ( import.meta.main ){