How To Guides

A virtual machine or VM is a virtual environment that works as a virtual computer system with its own processor, memory, network interface, and storage created ...

Collabora is an amazing open-source software platform that’s essentially Microsoft Office Online with collaboration. It provides powerful on-premise office su...

Your server has broken and just won’t appear to do what you need it to do. As a sysadmin you should always be looking for the root cause. So you need to do th...

Being a Linux administrator is a largely thankless position where you’ll be responsible for a lot of hardware, software, and data. And monitoring and protecti...

SMTP is a simple mail transfer protocol that’s a communication protocol for email transmission. It’s an internet standard that was defined in 1982 by RFC 82...

Every now and again you’re going to need to do some troubleshooting and that will sometimes mean some debugging is needed too. Any server can suffer from hard...

Syslog also includes an assigned severity level. If you’re running an increasingly larger and complex web server hosting operation then you should perhaps con...

Zip is a near-ubiquitous universal file archive commonly used on Windows, macOS, and Linux. You can create a zip archive, zip compressed volume, unzip files, an...

Well, that's what’s supposed to happen. Bad actors have a number of ways of subverting and hijacking that and that’s why it’s important to maintain update...

Postfix originally started life as a mail server created by Wietse Venema, at IBM Research. It was developed and used as an alternative to the widely-used Sendm...