Linux & Unix
How to reset the administrator password in ISPConfig 3
Since ISPConfig 3.2.12, the password can be reset using ispc command: Reset the password of the admin user. The command…
How to enable postfix service to start at boot on Linux
To start Postfix service at boot on a Linux system using the systemctl command, you can use the following steps.…
How to parse a .env file with PHP
Parsing a .env (dotenv) file in PHP can be done by using a dedicated library or writing a simple custom…
How to create a custom invoice template in ISPConfig 3 Billing Module
This tutorial shows how you can build your own custom template for the PDF invoices in the ISPConfig billing module.…
[SOLVED] The following signatures were invalid: EXPKEYSIG B188E2B695BD4743 DEB.SURY.ORG Automatic Signing Key
Here is the solution if you've got the following error message when updating package lists on Debian (apt-get update): The…