diff --git a/mariadb-103.sh b/mariadb-103.sh
index 7b9f325..35987f4 100644
--- a/mariadb-103.sh
+++ b/mariadb-103.sh
@@ -1,12 +1,14 @@
+#!/bin/bash
+
 output(){
-    echo -e '\e[36m'$1'\e[0m';
+    echo -e '\e[36m'"$1"'\e[0m';
 }
 
 mariadb_root_reset(){
     service mysql stop
     mysqld_safe --skip-grant-tables >res 2>&1 &
     sleep 5
-    rootpassword=`cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 32 | head -n 1`
+    rootpassword=$(/dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 32 | head -n 1)
     Q1="UPDATE user SET plugin='';"
     Q2="UPDATE user SET password=PASSWORD('$rootpassword') WHERE user='root';"
     Q3="FLUSH PRIVILEGES;"
diff --git a/mariadb-104-legacy.sh b/mariadb-104-legacy.sh
index 8b97ca9..8bbdb55 100644
--- a/mariadb-104-legacy.sh
+++ b/mariadb-104-legacy.sh
@@ -1,9 +1,11 @@
+#!/bin/bash
+
 output(){
-    echo -e '\e[36m'$1'\e[0m';
+    echo -e '\e[36m'"$1"'\e[0m';
 }
 
 mariadb_root_reset(){
-    rootpassword=`cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 32 | head -n 1`  
+    rootpassword=$(/dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 32 | head -n 1)
     Q1="SET PASSWORD FOR root@localhost = PASSWORD('$rootpassword');"
     Q2="FLUSH PRIVILEGES;"
     SQL="${Q1}${Q2}"
diff --git a/mariadb-104.sh b/mariadb-104.sh
index 15926aa..4e7427e 100644
--- a/mariadb-104.sh
+++ b/mariadb-104.sh
@@ -1,9 +1,11 @@
+#!/bin/bash
+
 output(){
-    echo -e '\e[36m'$1'\e[0m';
+    echo -e '\e[36m'"$1"'\e[0m';
 }
 
 mariadb_root_reset(){
-    rootpassword=`cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 32 | head -n 1`  
+    rootpassword=$(/dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 32 | head -n 1)
     Q0="SET old_passwords=0;"
     Q1="SET PASSWORD FOR root@localhost = PASSWORD('$rootpassword');"
     Q2="FLUSH PRIVILEGES;"
@@ -12,4 +14,4 @@ mariadb_root_reset(){
     output "Your MariaDB root password is $rootpassword"
 }
 
-mariadb_root_reset
+mariadb_root_reset
\ No newline at end of file