A change in PHP's default_charset php.ini setting causes HTML output to break if you try to set a different charset in your HTML head. It also might break functions like htmlentities() and htmlspecialchars().
Learn how to turn off swap in Bash, because when a swap partition is enabled Linux starts swapping, which may degrade (MySQL) system performance
Here is how to install software packages during a Windows Deployment Services (WDS) deployment, without Microsoft Deployment Workbench (available in the Microsoft Deployment Toolkit, or MDT).