From d348df882a6f7b6f43c93c0a6f919e925b1942e2 Mon Sep 17 00:00:00 2001
From: Eli Ribble <eli@theribbles.org>
Date: Wed, 29 Nov 2023 17:44:13 -0700
Subject: [PATCH] Read an argument from the commandline.

---
 gongor.rs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/gongor.rs b/gongor.rs
index a8c507f..d361db9 100644
--- a/gongor.rs
+++ b/gongor.rs
@@ -2,7 +2,9 @@ use std::fs::File;
 use std::io::prelude::*;
 
 fn main() ->  std::io::Result<()>{
-    let mut file = File::create("foo.txt")?;
+    let filename = std::env::args().nth(1).expect("no filename given");
+
+    let mut file = File::create(filename)?;
     file.write_all(b"Hello, world!")?;
     Ok(())
 }