added -f for foreground

Cargo.toml

@@ -75,6 +75,7 @@ depends = "$auto"
 assets = [ 
     # executable
     ["target/release/punchnet", "usr/local/punchnet/punchnet", "755"],
+    ["punchnet.service", "etc/systemd/system/punchnet.service", "755"],
     # lib
     ["libtuntap.so", "usr/lib/", "755"],
 ]

src/bin/punchnet/main.rs

@@ -315,6 +315,7 @@ fn main() {
     let cmd = CommandLineInput2::parse();
     // println!("port is {}", cmd.port);
 
+    let mut should_daemonize = true;
     match &cmd.cmd {
         Commands::Login(user) => {
             let rt = Runtime::new().unwrap();
@@ -402,12 +403,21 @@ fn main() {
             });
             process::exit(0);
         }
+        Commands::AutoRun(runinfo) => {
+            if runinfo.foreground {
+                should_daemonize = false;
+            }
+        }
+        Commands::Start(startinfo) => {
+            if startinfo.foreground {
+                should_daemonize = false;
+            }
+        }
         _other => {
             // just fall through to next code
         }
     }
 
-    let should_daemonize = true;
 
     #[cfg(not(target_os = "windows"))]
     if should_daemonize {

src/utils/command.rs

@@ -67,6 +67,9 @@ pub struct StartArguments {
     // take over dns or not if change /etc/resolv.conf
     #[arg(long)]
     pub take_dns: bool,
+
+    #[arg(short)]
+    pub foreground: bool,
 }
 
 #[derive(Args, Debug)]
@@ -110,6 +113,9 @@ pub struct AutoRunArgument {
     // take over dns or not if change /etc/resolv.conf
     #[arg(long)]
     pub take_dns: bool,
+
+    #[arg(short)]
+    pub foreground: bool,
 }
 
 #[derive(Args, Debug)]