diff --git a/src/main.rs b/src/main.rs
index 7f1bc9a..9a1cb9d 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -3,18 +3,41 @@ mod loaders;
 
 use crate::loaders::sources::{load_sources, save_sources_to_toml};
 use crate::loaders::packages::{get_installed_packages, save_packages_to_toml};
+use clap::Parser;
+
+#[derive(Parser)]
+struct Cli {
+    #[arg(long, required = true)]
+    main_option: String,
+}
 
 fn main() -> Result<(), Box<dyn std::error::Error>> {
-    // Sources
+    let cli = Cli::parse();
+
+    let user_option = cli.main_option;
+
+    match user_option.as_str() {
+        "load" => sources_fn()?,
+        "sync" => packages_sync_fn()?,
+        _ => println!("Invalid option"),
+    }
+    Ok(())
+}
+
+fn sources_fn() -> Result<(), Box<dyn std::error::Error>>{
+        // Sources
     let sources = load_sources("/etc/apt/sources.list")?;
     save_sources_to_toml(&sources, "sources.toml")?;
     println!("Saved sources to sources.toml");
 
-    // Packages
+    Ok(())
+}
+
+fn packages_sync_fn() -> Result<(), Box<dyn std::error::Error>> {
+        // Packages
     let packages = get_installed_packages()?;
     save_packages_to_toml(&packages, "packages.toml")?;
     println!("Saved packages to packages.toml");
 
     Ok(())
 }
-