This tutorial explains how to install Apache, how to install MySQL, how to change the root MySQL password, how to install PHP, and how to see what libraries are available. LAMP stack is a group of open source software used to get web servers up and running. The acronym stands for Linux, Apache ( the web server) , MySQL (the database), and PHP (the language). This tutorial is written for Debian.
🟢 Low ⏱ 5–15 min Last verified: 25 May 2026 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read • Source: Ubuntu Security Notice USN-5659-1 Related CVEs: CVE-2020-35605 CVE-2022-41322 Upstream summary: Stephane Chauveau discovered that kitty incorrectly handled image filenames with special characters in error messages. A remote attacker could possibly use this to […]
Introduction How to Configure RAID with mdadm on Debian 11 is a fundamental operation for any administrator maintaining a Debian 11 Bullseye server. Debian 11 Bullseye ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian 11. […]
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read • Source: Ubuntu Security Notice USN-5547-1 Related CVEs: CVE-2022-31607 CVE-2022-31608 CVE-2022-31615 CVE-2022-21813 CVE-2022-21814 Upstream summary: Le Wu discovered that the NVIDIA graphics drivers did not properly perform input validation in some situations. A local user […]
After completing this tutorial, you’ll have created Nagios Plugins with Bash on an Ubuntu 12.10 virtual server.
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: CentOS Stream 9 📖 ~4 min read • Source: AlmaLinux/RHEL advisory ALSA-2023:2502 Related CVEs: CVE-2022-2928 CVE-2022-2929 CVE-2021-25220 Upstream summary: The Dynamic Host Configuration Protocol (DHCP) is a protocol that allows individual devices on an IP network to get their own network configuration […]
Adding and deleting users are basic tasks that you will have to preform on most servers. Granting sudo privileges to allow users to perform administrative functions is another common requirement. In this article, we will discuss how to create and delete users and assign administrative privileges on a Debian server.
🟠 High ⏱ 15–60 min Last verified: 25 May 2026 Affected versions: FreeBSD 13 📖 ~4 min read • Source: FreeBSD VuXML VuXML topic: NSS — Memory corruption Related CVEs: CVE-2009-3555 CVE-2010-0173 CVE-2010-0174 CVE-2010-0175 CVE-2010-0176 CVE-2010-0177 CVE-2010-0178 CVE-2010-0179 +12 more Upstream summary: The Mozilla project reports: Memory corruption in NSS via DER-encoded DSA and […]
CSS media queries are the most powerful way to create responsive layouts and designs on the web. Get a quick refresher with this post.
Relational database management systems allow you to control what data gets added to a table with constraints. A constraint is a special rule that applies to one or more columns — or to an entire table — that restricts what changes can be made to a table’s data. This article will go over in detail what constraints are and how they’re used in relational databases. It will also walk through each of the five constraints defined in the SQL standard and explain their respective functions.
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