The Latest

It's Easier to Ask Forgiveness...

...than to understand Linux permissions! Honestly though, that's not really true. Linux permissions are simple and elegant, and once you understand them, they're easy to work with. Octal notation gets a little funky, but even that makes sense once you understand why it exists.

Users and Groups: more>>

diff -u: What's New in Kernel Development

One ongoing question kernel developers face is the best way to delete data so no one else can recover it. Typically there are simple tools to undelete files that are deleted accidentally, although some filesystems make this easier than others. more>>

Chrome-Colored Parakeets

I personally like Google's Chrome interface. It's simple, fast, elegant and did I mention fast? Unfortunately, I don't like how locked down the Chrome OS is on a Chromebook, nor do I like its total dependence on Google. I also don't like the lack of ability to install Chrome easily on generic hardware. Thankfully, Budgie is here to help. more>>

Mumblehard--Let's End Its Five-Year Reign

Linux has a well deserved reputation as being one of the most secure platforms for individuals and businesses. This is largely due to the way security is integrated into the system, but there is a great risk in being too complacent. Recent events serve to remind us that there is no such thing as an uncrackable system. more>>

An Easy Way to Pay for Journalism, Music and Everything Else We Like

Some of us work for money. Some of us work for love. Some of us work for both, or just because we feel compelled or obliged. more>>

When Official Debian Support Ends, Who Will Save You?

With a new version of Debian recently released, it's an exciting time for users who long for newer applications and cutting-edge features. But for some users, the new release is a cause for concern. more>>

May 2015 Issue of Linux Journal: Cool Projects

Robotic Sharks with Laser Eyes

I love the Cool Projects issue. more>>

Ubuntu Ditches Upstart

On April 23, 2015, Ubuntu version 15.04 (code-named Vivid Vervet) was released. This is an important release, although superficially it looks much the same as the previous version. The real difference is "under the skin", as Ubuntu switches from the Upstart init system to systemd. more>>

Video On Demand: 8 Signs You're Beyond Cron

Our latest free webinar is now available on demand! more>>

Picking Out the Nouns

A reader wrote a letter to me (oh happy day!), and although I'm still not entirely sure what she's trying to accomplish, it's an interesting puzzle to try to tackle anyway. Here's what she asked: more>>

Android Candy: Intercoms

Ever since my "tiny $20 tablet" project (see my Open-Source Classroom column in the March 2015 issue), I've been looking for more and more cool things to do with cheap Android devices. more>>

"No Reboot" Kernel Patching - And Why You Should Care

As Linux version 4.0 was released on 15 April, one of the most discussed new features to be included in this release is "no reboot" kernel patching. more>>

Return of the Mac

In a previous article, I talked about vim macro basics. In that article, I described how to record a custom macro, assign it to a key and then use it to make automated edits to a BIND zone. I also teased that I would cover more advanced uses of macros, like nested macros, in a future issue. more>>

DevOps: Better Than the Sum of Its Parts

Most of us longtime system administrators get a little nervous when people start talking about DevOps. It's an IT topic surrounded by a lot of mystery and confusion, much like the term "Cloud Computing" was a few years back. Thankfully, DevOps isn't something sysadmins need to fear. more>>

Play for Me, Jarvis

Elon Musk is known to be particularly apprehensive about artificial intelligence. Although many of us are both excited and worried about the potential future of AI, most don't need to fear computers taking over in the creative realms of society.

Or do we? more>>

Drupageddon: SQL Injection, Database Abstraction and Hundreds of Thousands of Web Sites

Drupal is a very widely used open-source content management system. It initially was released in 2001, and recent statistics show Drupal as the third-most popular content management system, with just less than 800,000 Web sites utilizing Drupal as a content management system. more>>

Non-Linux FOSS: .NET?

No, really! While on a normal day, the word "Microsoft" can be used as an antonym for "Open", the world of .NET seems to be going legitimately open source. more>>

JavaScript All the Way Down

There is a well known story about a scientist who gave a talk about the Earth and its place in the solar system. more>>

Designing Foils with XFLR5

For any object moving through a fluid, forces are applied to the object as the fluid moves around it. A fluid can be something like water, or even something like the air around us. When the object is specifically designed to maximize the forces that the fluid can apply, you can designate these designs as airfoils. A more common name that most people would use is a wing. more>>