feat: ability to disable backup thread

src/main.rs

@@ -39,8 +39,8 @@ struct Cli {
     /// How many backups to keep
     #[arg(short = 'n', long, default_value_t = 7)]
     max_backups: u64,
-    /// How frequently to perform a backup, in minutes
-    #[arg(short = 't', long, default_value_t = 720)]
+    /// How frequently to perform a backup, in minutes; 0 to disable.
+    #[arg(short = 't', long, default_value_t = 0)]
     frequency: u64,
 }
 
@@ -69,8 +69,10 @@ fn main() {
         .max_backups(cli.max_backups);
     let counter = Arc::new(Mutex::new(cmd.spawn().expect("Failed to start server.")));
 
+    if cli.frequency > 0 {
         let clone = Arc::clone(&counter);
         std::thread::spawn(move || backups_thread(clone, cli.frequency));
+    }
 
     let stdin = io::stdin();
     let input = &mut String::new();