diff --git a/vendor/phangoapp/leviathanutils/src/Linux.php b/vendor/phangoapp/leviathanutils/src/Linux.php
index 4208250..883faef 100644
--- a/vendor/phangoapp/leviathanutils/src/Linux.php
+++ b/vendor/phangoapp/leviathanutils/src/Linux.php
@@ -148,7 +148,7 @@ class Linux {
         
         $str_user.=" ${username}";
         
-        Linux::shell_command([$str_user]);
+        return Linux::shell_command([$str_user]);
         
     }
     
@@ -172,19 +172,19 @@ class Linux {
         
         if($distro=='debian' || $distro=='ubuntu') {
             
-            Linux::shell_command(['sudo DEBIAN_FRONTEND="noninteractive" apt-get install -y '.$package[$distro]]);
+            return Linux::shell_command(['sudo DEBIAN_FRONTEND="noninteractive" apt-get install -y '.$package[$distro]]);
             
         }
         else if($distro=='fedora' || $distro=='almalinux' || $distro=='rocky') {
             
             //if call("sudo dnf install -y {}".format(package[linux_distro]), shell=True) > 0:
-            Linux::shell_command(['sudo dnf install -y '.$package[$distro]]);
+            return Linux::shell_command(['sudo dnf install -y '.$package[$distro]]);
             
         }
         else if($distro=='arch') {
             
             //sudo pacman -S --noconfirm 
-            Linux::shell_command(['sudo pacman -S --noconfirm '.$package[$distro]]);
+            return Linux::shell_command(['sudo pacman -S --noconfirm '.$package[$distro]]);
             
         }
         
@@ -220,7 +220,7 @@ class Linux {
             
         }
         
-        Linux::shell_command(["sudo systemctl ${action} ".$service[$distro]]);
+        return Linux::shell_command(["sudo systemctl ${action} ".$service[$distro]]);
         
     }
     
@@ -236,7 +236,7 @@ class Linux {
             
         }
         
-        Linux::shell_command($executable[$distro]);
+        return Linux::shell_command($executable[$distro]);
         
     }
     
@@ -252,7 +252,7 @@ class Linux {
             
         }
         
-        Linux::shell_command(["sudo sed -i", "\"s/".$arr_sed[$distro][0]."/".$arr_sed[$distro][1]."/g\" ".$arr_sed[$distro][2]]);
+        return Linux::shell_command(["sudo sed -i", "\"s/".$arr_sed[$distro][0]."/".$arr_sed[$distro][1]."/g\" ".$arr_sed[$distro][2]]);
         
     }
     
@@ -265,5 +265,10 @@ class Linux {
         
     }
     
+    static public function check_domain_name($domain_name) {
+        
+        return preg_match("/^(a-z\d*)(\.(a-z\d*))*$/i", $domain_name);
+        
+    }
 
 }