diff --git a/01_phase_rust_src/sv/src/executor.rs b/01_phase_rust_src/sv/src/executor.rs
index 7c738f8..91ad357 100644
--- a/01_phase_rust_src/sv/src/executor.rs
+++ b/01_phase_rust_src/sv/src/executor.rs
@@ -4,8 +4,26 @@ use std::fs;
 use std::path::Path;
 use std::env::set_current_dir;
 
-pub fn execute(svdir_var: String, svwait_var: i32, verbose: i8, command: &str, services: Vec<String>){
-    // TODO: Return the exec code.
+fn sent_signal(exit_code: i32, svwait_var: i32, verbose: i8, command: &str, sv: String) -> i32 {
+    
+    // Check if supervise/ok exist.
+    let supervise_ok = Path::new("supervise/ok");
+    if ! supervise_ok.exists() {
+        println!("warning: {}: unable to open supervise/ok: file does not exist", sv.clone());
+        if exit_code < 99 {
+            return exit_code + 1;
+        } else {
+            return exit_code;
+        }
+    }
+    // TODO
+    // sent the proper signal to supervise/control
+    //
+    // if verbose = 1, wait for the service to reach the proper state or timeout.
+    return exit_code;
+}
+
+pub fn execute(svdir_var: String, svwait_var: i32, verbose: i8, command: &str, services: Vec<String>) -> i32{
     println!("execute in exec");
     dbg!(svdir_var.clone());
     dbg!(svwait_var);
@@ -35,9 +53,8 @@ pub fn execute(svdir_var: String, svwait_var: i32, verbose: i8, command: &str, s
         let path_to_sv = Path::new(&path);
 
         if set_current_dir(path_to_sv).is_ok() {
-            println!("Set path okay.");
-            // TODO: make a function which do what's next.
-            // It will be called, sent_signal, will return 0 if no error, and 1 if an error.
+            // Call the change in the service.
+            exit_code = sent_signal(exit_code, svwait_var, verbose, command, sv);
         } else {
             println!("fail: {}: unable to change to service directory: file does not exist", sv);
             if exit_code < 99 {
@@ -45,15 +62,8 @@ pub fn execute(svdir_var: String, svwait_var: i32, verbose: i8, command: &str, s
             }
         }
 
-        // TODO
-            // 2. Check if supervise/ok exist
-            //
-            // if not, error => increase by one the exit code and print a beatifull message in Err
-            // standard.
-            //
-            // if yes, sent the proper signal to supervise/control
-            //
-            // if verbose = 1, wait for the service to reach the proper state or timeout.
     }
 
+    return exit_code
+
 }
diff --git a/01_phase_rust_src/sv/src/main.rs b/01_phase_rust_src/sv/src/main.rs
index b1498d0..1cad543 100644
--- a/01_phase_rust_src/sv/src/main.rs
+++ b/01_phase_rust_src/sv/src/main.rs
@@ -26,10 +26,6 @@ fn main() {
 
     let mut verbose: i8 = 0;
 
-    //dbg!(svdir_var);
-    //dbg!(svwait_var);
-
-
     // run the parser
     let args: Vec<String> = env::args().collect();
 
@@ -46,7 +42,6 @@ fn main() {
         if i == 0 {
             if val == "-v" {
                 verbose = 1;
-                //dbg!(verbose);
             }
             else if val == "-w" {
                 i = 3;
@@ -70,25 +65,25 @@ fn main() {
             }
         }
         else if i == 1 {
+            // Set the command as first arguments.
             command = val;
-            //dbg!(command);
             i += 1;
         }
         else if i == 2 {
-            // case services to control.
-            //dbg!(val);
+            // add services to control.
             services.push(val.to_string());
         }
         else if i == 3 {
+            // change svwait after flag -w
             svwait_var = match val.parse::<i32>() {
                 Ok(val) => val,
                 Err(..) => svwait_var,
             };
-            //dbg!(svwait_var);
             i = 0;
         }
     }
-
-    executor::execute(svdir_var, svwait_var, verbose, command, services);
+    
+    // Exit after all services are correctly executed.
+    exit(executor::execute(svdir_var, svwait_var, verbose, command, services));
 
 }