Linux – IT Blog

How to disable “New release available” email notifications on Ubuntu

Once I noticed that new servers running Ubuntu Server 18.04 operating systems periodically send email notifications:

Installing and using Duplicity

In this article, I will provide an example of how to install and use Duplicity. Creation of full and incremental backups to local and remote servers.

ABillS. Problem with payments between 00:00 and 01:00

In 2018, I ran into a problem when the user ran out of money on the account, at midnight he turned off the billing, the user immediately made a payment, the money was debited and the service turned on, and at 1 am it was turned off again, because the billing system tried to withdraw the monthly fee again. I’ll just post a simple script here that allows you to receive email notifications with a list of users who made a payment at night between 00:00 and 01:01, so that later you can manually correct it.

IPTables. Blocking by MAC address

In this article, I will show examples of blocking MAC addresses in IPTables.

Installing openDCIM on Ubuntu

openDCIM is a free PHP and MySQL web application for managing data center infrastructure.

Quagga. Setting up logging

I will give an example of setting up Quagga logging.

ABillS. Installing Freeradius

I will give an example of updating or installing Freeradius 3.0.21 from the source codes.
ABillS and Freeradius will work for me in the same operating system Ubuntu Server 18.04.

cPanel. Mail Import to Gmail

Let’s say we created a new email address through cPanel and want Gmail to import mail from it.

Installing and configuring Icecast & Ices

Icecast is free software for streaming digital audio broadcasting.
Official site http://www.icecast.org

Installing and configuring Aircrack-ng

Aircrack-ng is a set of programs designed to detect wireless networks, intercept traffic transmitted over wireless networks, audit WEP and WPA/WPA2-PSK encryption keys (strength test).
Official site: www.aircrack-ng.org