diff --git a/install.sh b/install.sh
index 08a22ae..e749622 100755
--- a/install.sh
+++ b/install.sh
@@ -1,6 +1,7 @@
 #!/bin/bash
 
-echo "This shell file will check dependencies, install if necessary, and build ORORA."
+sudo echo "This shell file will check dependencies, install if necessary, and build ORORA."
+
 
 command_exists() {
     command -v "$1" >/dev/null 2>&1
@@ -80,11 +81,10 @@ if [ $? -ne 0 ]; then
     exit 1
 fi
 
-echo "orora has been installed successfully."
+echo "orora has been installed successfully!"
 echo "You can now run 'orora' from any directory."
 
 # Optional: Set up man page or help documentation
 # sudo cp orora.1 /usr/local/share/man/man1/
 # sudo mandb
 
-echo "Installation process completed."
diff --git a/src/loader/main.c b/src/loader/main.c
index eef174f..b5529d9 100644
--- a/src/loader/main.c
+++ b/src/loader/main.c
@@ -77,12 +77,13 @@ bool init_orora();
 void handle_sigint(int sig)
 {
   fprintf(stderr, "\n");
-  fprintf(stderr, DIALOGUE);
+//   fprintf(stderr, DIALOGUE);
 }
 
 void handle_sigterm(int sig)
 {
   fprintf(stderr, "\n");
+  exit(0);
 }
 
 bool INTERACTIVE_MODE = 0;
@@ -141,8 +142,8 @@ int main(int argc, char** argv)
   {
     change_interactive_mode(1);
 
-    signal(SIGINT, handle_sigint);
-    signal(SIGTERM, handle_sigterm);
+//     signal(SIGINT, handle_sigint);
+//     signal(SIGTERM, handle_sigterm);
     fflush(stdout);
 
     int port = START_PORT;
diff --git a/src/server/client.c b/src/server/client.c
index cf9fcc9..934f6c8 100644
--- a/src/server/client.c
+++ b/src/server/client.c
@@ -111,7 +111,6 @@ void run_client(int port)
         }
         else if (n == 0)
         {
-          printf("Server disconnected\n");
           return;
         }
         else if (errno != EAGAIN && errno != EWOULDBLOCK)
@@ -141,7 +140,6 @@ void run_client(int port)
         }
         else if (n == 0)
         {
-          printf("Server disconnected\n");
           free(response);
           return;
         }
diff --git a/src/server/daemon.c b/src/server/daemon.c
index bc62b9e..07f61fe 100644
--- a/src/server/daemon.c
+++ b/src/server/daemon.c
@@ -52,8 +52,8 @@ int is_end_interactive_line(Lexer* root)
 
 void run_daemon()
 {
-  signal(SIGTERM, handle_signal);
-  signal(SIGINT, handle_signal);
+//   signal(SIGTERM, handle_signal);
+//   signal(SIGINT, handle_signal);
 
   char buffer[BUFFER_SIZE];
 
@@ -79,7 +79,7 @@ void run_daemon()
     if (is_first_line)
     {
       input = malloc(num_read + 1);
-      if (input == NULL)
+      if (input == (void*) 0)
       {
         syslog(LOG_ERR, "Memory allocation failed");
         break;
@@ -92,7 +92,7 @@ void run_daemon()
     else
     {
       char *temp = realloc(input, len_input + num_read + 1);
-      if (temp == NULL)
+      if (temp == (void*) 0)
       {
         syslog(LOG_ERR, "Memory reallocation failed");
         free(input);
@@ -112,6 +112,20 @@ void run_daemon()
     *len_p = (off_t) len_input;
     
     Lexer* root = init_lexer(input, len_p);
+
+    Lexer* lexer_null_checker = malloc(sizeof(Lexer));
+    memcpy(lexer_null_checker, root, sizeof(Lexer));
+    if (lexer_get_token(lexer_null_checker) == (void*) 0)
+    {
+      free(lexer_null_checker);
+      orora_write("", ORORA_STATUS_SUCCESS);
+      continue;
+    }
+    free(lexer_null_checker);
+
+// #include "develop/develop_mode.h"
+//     printf("root_size: %d\n", root->size);
+//     print_tokens(root);
     int right_space = is_end_interactive_line(root);
     if (right_space == 0)
     {
@@ -137,7 +151,13 @@ void run_daemon()
       {
         if (new_value->type != AST_VALUE_NULL || !(ast->type == AST_FUNCTION
               || ast->type == AST_CODE
-              || (ast->type == AST_VALUE && ast->value.value_v->stack->type == AST_VALUE_CODE)))
+              || ast->type == AST_FOR
+              || ast->type == AST_WHILE
+              || ast->type == AST_CASES
+              || (ast->type == AST_VALUE && (ast->value.value_v->stack->type == AST_VALUE_CODE)
+                )
+              )
+            )
           visitor_print_function_value(new_value);
         orora_write("\n", ORORA_STATUS_SUCCESS);
       }