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But we are proud to say that Dave Cohen contributed 46 entries already.
If you’re trying to learn System Administration, Software Development, or any other complex technical skill, you’re probably going about it in the wrong way: lots of theory study, and very little practical work. In this article, I’ll show you the right way: a faster and more effective way to learn, backed by the latest scientific research […]
If you’re spending a lot of time looking at a screen, you’ll probably want to turn down the blues, to give your eyes a chance: http://jonls.dk/redshift/. To install, just use your operating system’s package manager (apt, pkg, pacman, etc.) to install redshift. On Ubuntu and Debian, this would be: apt-get install redshift Try a few […]
If you care about your data, you should care about filesystems (the operating system/software abstraction over your storage hardware). If you care about filesystems, you will end up at ZFS: the Zettabyte FileSystem. It’s basically an incredible piece of technology that can do just about anything that you might need from a storage system: instant […]
A while back, I did a YouTube series on Linux Containers (LXC). If you are (or want to be) a sysadmin or software developer, you need to know about Linux Containers, and understand how to use them. I’ve just written a ~45-page guide to getting started with this useful skill — check it out here! For […]
I spent some time migrating an application from sqlite3 to Postgres today, and wanted to write down a few notes for next time. Here they are!
If you use ZFS, you already know that it completely knocks the socks off of other filesystems. It prevents and corrects data corruption, gives you incredible flexibility, and basically gives you everything you could ever want from a filesystem. If you use OpenZFS on several systems already, you probably know about the ‘send’ and ‘receive’ […]
It’s been a really long time since the last batch of sysadmin links, so it’s time to get started again. Lots of great stuff to share from the last few months. An insanely funny (sarcastic) post about skill training for system administration: https://www.reddit.com/r/sysadmin/comments/12hogn/rsysadmins_i_envy_your_jobs_how_can_i_a_college/ A really nice explanation of how a Distributed Denial-of-Service attack works, in a single […]
Did you know that Kim Jong Un, the glorious, fearless, and immaculately rotund leader of North Korea, loves Mac OS X (and possibly Madonna)? If not, you’ll want to check out this video about Red Star OS, the operating system which the North Korean government has put together for their citizens.
I’ve just released the first tutorialinux ebook. For those of you who want a sneak-peek, this post is basically a command-line-instructions only version of the practical content from the e-book. These instructions will get you a working configuration for serving HTTPS traffic to your website visitors. Disclaimer: This post leaves out most of the background, theory, explanations, security and performance […]
Most aspiring tech people make a critical mistake when evaluating ideas for a career. They approach the problem from a 30,000-foot view, saying to themselves, “I might like a career in finance.” Then, they try to work out a more detailed niche, before making plans for getting there. This can work sometimes, but if you find […]