How to run MySQL command on bash?

Question

The following code works on the command line

mysql --user='myusername' --password='mypassword' --database='mydatabase' --execute='DROP DATABASE myusername;  CREATE DATABASE mydatabase;' 

However, it doesn't work on bash file on execution

#!/bin/bash user=myusername password=mypassword database=mydatabase  mysql --user='$user' --password='$password' --database='$database' --execute='DROP DATABASE $user; CREATE DATABASE $database;' 

I receive the following error:

ERROR 1045 (28000): Access denied for user '$user'@'localhost' (using password: YES)

How to make the bash file run as the command line?

Answer 1

Use double quotes while using BASH variables.

mysql --user="$user" --password="$password" --database="$database" --execute="DROP DATABASE $user; CREATE DATABASE $database;" 

BASH doesn't expand variables in single quotes.