System & Network Admin

When a file is deleted, its contents may still be left in the filesystem, unless explicitly overwritten with something else. The wipe command can securely erase files, but does not seem to allow er...

Lots of different programs, such as Darik's Boot and Nuke, let you write over a hard drive multiple times under the guise of it being more secure than just doing it once. Why?

DDI Guru provides DNS, DHCP and IPAM consulting, engineering and development professional services

DNS has a number of mechanisms for redundancy and high availability. More often than not, clients will have a primary and secondary nameserver to talk to. However, if the primary nameserver fails for whatever reason, then the queries to the primary usually need to timeout before attempting queries to the secondary. Also the speed of general web browsing can often be dictated by how long it takes to receive a valid DNS response to the query.

The #1 source of Palm OS apps on the internet since 2018

Nginx is a free, open-source and powerful web server that was developed with speed and scalability in mind. It is capable of serving hundreds of thousands of clients simultaneously. Nginx uses the PHP…

Updated for 2021 !!! Update: I’ve recently added a Thunderbolt 3 PCIe card for easy 40 Gbps connectivity. Why another NAS/DAS article?There are a lot resources online for building your own DIY DAS

Presenting the LSI 9202-16e host bus adapter: Dual SAS controllers and an x16 interface mean 5,250MB/Second throughput and 725,000 IOPS in ONE PCIe slot!

In this Linux command line tutorial, you'll learn the logrotate command in Linux through command line examples and frequently used options.

logrotate is designed to ease administration of systems that generate large numbers of log files. It allows automatic rotation, compression, removal, and ...

Logs can be a pain to deal with but they are also lifesavers when you need to find out what went wrong on a system. Find out how to set up this essential service on your systems.

CDN makes it easy to build your own Content Delivery Network. It’s a complete solution for private CDN and service provider CDN.

Save time by having your Windows PC do the work for you.

Unleash the power of a security-first, AI-powered network to accelerate line of business outcomes and elevate end-user and IT experiences.

DML uses INSERT, UPDATE, DELETE and MERGE to add, update, and delete data in SQL.

Why WAL files accumulate in Postgres and what to do about them

Use declarative language to build simpler, faster, scalable and flexible data pipelines

Home is where the heart is. Or, if you're running Linux, it's where you mount the home directory. Here's how.