As you’ve probably seen in the comments to your question, the cronjobs in
/etc/cron.hourly (and the other, similar directories) are executed by
run-parts is a little picky about filenames. By default it doesn’t execute files whose filenames contain anything other than (all of those from ASCII)
- uppercase letters
- lowercase letters
- dashes (“minus signs”)
So if your script has a filename of for example “myscript.sh”, it just is ignored, because
run-parts does not like the dot.
Source: Why putting a script in /etc/cron.hourly is not working? – Ask Ubuntu
In this tutorial, we will see how to use the terminal to clean up unused memory that was not released properly after being used by your system. No need to use any third-party software, just a few commands will do the job pretty easily.
Source: How to Free up Unused Memory in Ubuntu/Linux Mint
Have a little problem with a server freezing which might be memory related. This simple tutorial was very helpful.
You can free up unused memory under Ubuntu/Linux Mint using this command:
sudo sysctl -w vm.drop_caches=3
“We’re producing an experience where content and services come directly to the screen in an unfragmented way,” says Cristian Parrino, VP of Mobile at Canonical. “It makes for a much richer and faster user experience
via The First Ubuntu Phone Won’t Rely On Apps. Here’s Why That’s Brilliant | Fast Company | Business + Innovation.
Developed in large part by now defunct Willow Garage, ROS was designed for collaborative, open source robotics development. ROS is a collection of tools and libraries that simplify the task of creating and programming robotic platforms and applications. ROS is not a real-time OS, but it can be integrated with RTOSes, as well as Linux. As of earlier this year, Android support was added.
The default install for ROS is Ubuntu Linux. Core ROS components include message passing, message recording and playback, remote procedure calls, and a distributed parameter system. In addition to these core middleware components, ROS offers more robotics-specific features like a Unified Robot Description Format (URDF), a remote geometry library, preemptable remote procedure calls, and diagnostics. It also offers ready-built packages for common robotics problems like mobile navigation, pose estimation, and building a map and having the robot self-localize on it.
via Robot OS to support Linux and Android on Snapdragon · LinuxGizmos.com.
The Utilite can have the processor configured up to 1.2GHz, up to 4GB of DDR3 RAM, up to a 512GB mSATA SSD, up to a 128GB Micro-SD SDXC, and two display ports — HDMI 1.4 and DVI-D — up to 1920×1200 resolution at 60Hz. The specs of the GPU aren’t listed, but rather what is listed is what it supports: OpenGL ES 1.1 and 2.0, OpenVG 1.1 and OpenCL EP, multi-stream 1080p H.264, VC1, RV10, and DivX HW decoding. What seems static on the Utilite, at least, is Bluetooth 3.0, two Gigabit Ethernet ports, 802.11b/g/n WiFi, stereo line-out and in, four USB 2.0 ports, a micro-USB OTG connector, and two RS232 serial ports.
via $99 ARM-based Utilite gives the Raspberry Pi some competition | ExtremeTech.
To keep the balance between the integrity of our trademarks and the ability to to use and promote Ubuntu, we’ve tried to define a reasonable Intellectual Property Policy. You can read the full policy at http://www.canonical.com/intellectual-property-policy. As you can see from our policy, to use the Ubuntu trademarks and and Ubuntu word in a domain name would require approval from Canonical.
via Canonical shouldn’t abuse trademark law to silence critics of its privacy decisions | micah.f.lee.
Update: From Canonical Blog.
In the case of fixubuntu.com, we were concerned that the use of the trademark implied a connection with and endorsement from the Ubuntu project which didn’t exist. The site owner has already agreed to remove the Ubuntu logo and clarified that there is no connection; from our perspective the situation has been resolved, and we have no issue with the site or the criticism it includes. In fact, far from an trying to silence critics, our trademark policy actually calls out parody and criticism and other uses as being allowed when the marks are used appropriately. (Please make the parodies funny – we need a good laugh as much as anyone!)
From Mark Shuttleworth:
This was a bit silly on our part, sorry. Our trademark guidelines specifically allow satire and critique (‘sucks sites’) and we should at most have asked him to state that his use of the logo was subject to those guidelines.
In 2011, the Gendarmerie added 20,000 Ubuntu desktops, and in 2012 added another 10,000. This year, it added 2000 so far. Between March and June of 2013, the police force also performed an update of Ubuntu, upgrading to version 12.04 from 10.04, over its network. “This January, the last constraints will disappear, and we will replace the last proprietary desktop PCs by Ubuntu.”
via French Gendarmerie: “Open source desktop lowers TCO by 40%” | Joinup.
The Linux version of Steam will likely be at the core of Valve’s upcoming plans for living room-based “Steam Box” hardware, building off the recently unveiled Big Picture mode. The move to Linux also gives Valve more flexibility in working around Microsoft’s Windows 8, which co-founder Gabe Newell has called “a catastrophe for everyone in the PC space.”
via Valve officially launches Steam for Linux with massive sale | Ars Technica.
The laptop comes with Ubuntu Linux 12.04 LTS plus a few additions. Dell worked closely with Canonical and the various peripheral manufacturers to ensure that well-written, feature-complete drivers are available for all of the laptop’s hardware. Out of the box the laptop will just work. They also have their own PPA if you want to pull down the patches separately, either to reload the laptop or to use on a different machine.
via Dell releases powerful, well-supported Linux Ultrabook | Ars Technica.
In a presentation at Ubuntu Developer Summit currently going on in Denmark, Drew Bliss from Valve said that Linux is more viable than Windows 8 for gaming. Windows 8 ships with its own app store and it is moving away from an open platform model.
via Valve: Linux More Viable Than Windows 8 for Gaming ~ Ubuntu Vibes | Daily Ubuntu Linux Updates.
Ubuntu is preferred platform as it has a large user base and good community support with a strong company like Canonical behind it.