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Intermediate Linux / Unix System Administrator Tutorials

These tutorials assumes that you have strong understanding of Unix like operating systems and very comfortable with most aspects of the Unix/Linux operating system. Familiar with fundamental networking/distributed computing environments is required. ( rss feed )

How to find out AES-NI (Advanced Encryption) Enabled on Linux System

The Intel Advanced Encryption Standard (AES) or New Instructions (AES-NI) engine enables extremely fast hardware encryption and decryption for openssl, ssh, vpn, Linux/Unix/OSX full disk encryption and more. How do I check support for Intel or AMD AES-NI is loaded in my running Linux in my Linux based system including openssl?
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FreeBSD Install Rsnapshot Filesystem Snapshot Backup Utility

How do I install rsnapshot a filesystem snapshot utility based on rsync on my FreeBSD server to backup my local/remote Linux and Unix-based desktop, server and laptop system?
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How To Install FreeBSD on Raspberry Pi 2 Model B

How do I install FreeBSD 10 or FreeBSD 11 (current) on Raspberry Pi 2 Model B? How do I flash the SD Card using Linux, OS X, FreeBSD or Unix-like operating system?
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How To Wakeup Backup Nas Server and Mirror Files Using Rsync in Linux

I've a critical data stored on my small home server. I backup my Desktop, Laptop and a remote VPS server to my home nas server powered by Debian Linux using rsnapshot backup utility. In the event that my main nas server has a hardware (hard disk failure) problem, having mirrored files provides some sort of peace of mind. How do I mirror /backups/personal (total 100GB and growing everyday) to a secondary nas Linux server located in my network?
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Linux and Unix Test Disk I/O Performance With dd Command

How can I use dd command on a Linux to test I/O performance of my hard disk drive? How do I check the performance of a hard drive including the read and write speed on a Linux operating systems?
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Debian 8 and Ubuntu 14.04 LTS Install Suhosin PHP Extension To Protect Your Server

Suhosin is an advanced protection system for PHP installations. It was designed to protect servers and users from known and unknown flaws in PHP applications and the PHP core. How can I install suhosin extension on a Debian v8.x or Ubuntu Linux 14.04 LTS server?
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How to update Debian or Ubuntu Linux containers (lxc) VM

I'm using LXC (Linux Containers) a virtualization system running on a Ubuntu LTS. How can I update all my Ubuntu or Debian Linux based guests containers VM from host operating system?
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