Tag: Debian

Create A New MYSQL Database and User

Here is a quick guide to creating a new MYSQL database, adding a user, and then finally a simple table. I will be using debian/ubuntu as the host system.

First create the database.

sudo mysqladmin create testdatabase

sudo mysql -u root

Create the database user.

CREATE USER `test_user`@`localhost` IDENTIFIED BY 'password';

Now grant the new user permissions on the new database.

GRANT ALL ON testdatabase.* to `test_user`@`localhost`;

Don’t forget to flush privileges!

FLUSH PRIVILEGES;

Now login to your new user/database.

mysql -u test_user -p testdatabase

Now we can create a test table.

CREATE TABLE `members` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `name` tinytext COLLATE utf8mb4_unicode_ci NOT NULL,
  `description` text COLLATE utf8mb4_unicode_ci NOT NULL,
  `address` text COLLATE utf8mb4_unicode_ci NOT NULL,
  `url` text COLLATE utf8mb4_unicode_ci NOT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

Lets get the description of the table to make sure it worked.

mysql> desc members;
+-------------+----------+------+-----+---------+----------------+
| Field       | Type     | Null | Key | Default | Extra          |
+-------------+----------+------+-----+---------+----------------+
| id          | int      | NO   | PRI | NULL    | auto_increment |
| name        | tinytext | NO   |     | NULL    |                |
| description | text     | NO   |     | NULL    |                |
| address     | text     | NO   |     | NULL    |                |
| url         | text     | NO   |     | NULL    |                |
+-------------+----------+------+-----+---------+----------------+
5 rows in set (0.00 sec)

mysql>

Finally, lets add a quick row.

mysql> INSERT INTO members(name, description, address, url) VALUES('Matt', 'Hackerman', '1234 Main St.','https://pghcpc.com');
Query OK, 1 row affected (0.01 sec)

Run a select query now to show your new row.

mysql> select * from members;
+----+------+-------------+---------------+--------------------+
| id | name | description | address       | url                |
+----+------+-------------+---------------+--------------------+
|  1 | Matt | Hackerman   | 1234 Main St. | https://pghcpc.com |
+----+------+-------------+---------------+--------------------+
1 row in set (0.00 sec)

That’s it! Have fun with your new database!

February 5, 2022

Change Timezone on Raspian / Debian / Ubuntu

Here’s a quick and easy way to change the timezone configuration on Raspian / Debian / Ubuntu server, but will probably work on other linux flavors as well.

First, lets see what our current configuration is:

timedatectl 
               Local time: Fri 2021-09-10 19:13:06 BST
           Universal time: Fri 2021-09-10 18:13:06 UTC
                 RTC time: n/a
                Time zone: Europe/London (BST, +0100)
System clock synchronized: yes
              NTP service: active
          RTC in local TZ: no

To get a list of all the supported time-zones:

timedatectl list-timezones

And something like this to grep for relevant ones:

timedatectl list-timezones | grep "America"

Next, lets set our time-zone:

sudo timedatectl set-timezone America/New_York

Finally, check to make sure the changes were applied:

timedatectl 
               Local time: Fri 2021-09-10 14:21:42 EDT
           Universal time: Fri 2021-09-10 18:21:42 UTC
                 RTC time: n/a
                Time zone: America/New_York (EDT, -0400)
System clock synchronized: yes
              NTP service: active
          RTC in local TZ: no

That’s it! Pretty simple stuff.

September 10, 2021