Part of keeping systems safe and secure involves keeping them properly patched. This can be quite a chore when you need to manage many systems. One way of easing this burden is to let each system automatically apply some or all updates and patches.
This is easy to set up on Ubuntu systems.
Note: All . . . → Read More: Configuring automatic upgrades on Ubuntu
Maxima is a free and open source software system for manipulation of symbolic and numeric expressions, high-precision numeric computations, and plotting in two and three dimensions. Maxima is a descendant of Macsyma, the computer algebra system developed in the 1960s at MIT that inspired commercial systems, such as Maple and Mathematica. Maxima was maintained . . . → Read More: Introduction to Maxima
The Electronic Frontier Foundation is working hard to defend bloggers’ legal rights. If you post or share information online, you should check out EFF’s Legal Guide for Bloggers.
Planet Four is a cool, citizen science project in the Zooniverse, where ordinary people can help scientists identify and measure features on the surface of Mars.
Image: NASA/JPL/University of Arizona
Currently, the Planet Four project scientists are asking for help finding and marking “fans” and “blotches” on the Martian surface. It is believed that these . . . → Read More: Planet Four
So, you need to create a short clip from a longer video. Sure, you could launch your favorite GUI video editor, like OpenShot or Kdenlive, and manipulate your video. But, why not use the command-line for such a simple edit?
This is where the Libav or FFmpeg project comes in handy. Both projects provide tools . . . → Read More: Clipping videos from the command-line
OpenShot is a free, open-source, non-linear video editor currently available for Linux. OpenShot has an impressive feature list.
The creators of OpenShot want to bring their product to other operating systems, including Mac OS X and Windows, and they’re trying to fund this effort through a KickStarter campaign. As we’ve discussed here and here, KickStarter . . . → Read More: OpenShot Video Editor KickStarter Campaign
This article is not intended as a full treatment of this topic. There are far too many options and considerations to do it justice in one article.
First, we need some definitions …
Originally, a watermark was a faint impression on paper. This idea is carried over to digital videos as a . . . → Read More: Watermarking a video from the command-line
SpaceX checks off another success for its vertical takeoff and vertical landing (VTVL) vehicle, the Grasshopper. This is a demonstration of technology that enables a rocket to land intact, rather than burning up in the atmosphere on re-entry.
On 07 March 2013, SpaceX‘s Grasshopper succeeded in leaping vertically 80.1 meters (about 24 stories), hovering for . . . → Read More: Well done, Grasshopper
SSH or Secure Shell is a cryptographic, network protocol for secure communications originally developed by Tatu Ylönen, a researcher at Helsinki University of Technology in 1995. He was motivated by a password-sniffing attack on the university network, where protocols like rlogin, telnet, and rsh failed to provide strong encryption. The original implementation was released as . . . → Read More: OpenSSH
“We’ve arranged a global civilization in which most crucial elements profoundly depend on science and technology. We have also arranged things so that almost no one understands science and technology. This is a prescription for disaster. We might get away with it for a while, but sooner or later this combustible . . . → Read More: Quote: Carl Sagan