End users

How to Purge Memory in Google's Chromium browser

Since its launch, Google's Chromium browser has proved to be immensely popular. Chromium introduced many new and innovative features but it also brought along with it a familiar problem. Memory hogging. However, as Google released subsequent versions they addressed it. This short article will show you how to gain some traction over Chromium when, after prolonged browsing, it starts to seriously hog that resource.

You don't need to be a web browser developer or a coder. All you need is Chromium's built-in Task Manager and a command line switch.

Gnome-Shell 3.2: Usable--but only with Gnome 2 shell extensions

If you hated Ubuntu's Unity desktop then the shock of your first encounter with the Gnome-shell likely caused your entire digital weltanschauung to implode. Make no mistake about it, it takes you right out of your comfort zone to a strange and unfamiliar place even if you've already tried Unity and decided to throw it back or put it in the keep net. Be shocked, very shocked.

A MediaWiki workflow for screenplay development using Labeled Section Transclusion

We use a common extension for MediaWiki for managing our script-development process on "Lunatics". It works quite well, and it might not be obvious, so I thought I'd explain it here. The idea is to make it possible for the writer to work on the script in a single page while allowing the director to add shooting notes, storyboards, and other material to each scene -- and to keep everything synchronized so that we don't have two versions of the script.

Tethered Shooting with Entangle

Tethering your DSLR camera to a computer opens a whole new world of possibilities: you can instantly view your shots on a large screen, trigger your camera remotely, practice the art of time-lapse photography, and perform other clever tricks. While commercial tethering software for Windows and Mac OS X often costs serious money, you can enjoy all the advantages of tethered shooting on Linux free of charge courtesy of Entangle. This tethering software lets you control practically all camera settings, trigger the shutter from the computer, view a live preview of a scene, and automatically download captured images to the computer.

Measures on the command line

In an earlier article I promised to demonstrate more 'magic words' for the command line. All you do is open a terminal, enter the magic word, hit Enter – and cool things happen! The magic word this time is units. The GNU Units program isn't installed by default in most Linux distributions, so you'll probably need to install it from your distribution's repository. Also, until you get to know GNU Units, I recommend that you enter units -v (v for verbose) on the command line. This makes the output a little more easy to understand.

The GNU Units program converts quantities from one unit system to another.

Easy File Sync with Bitpocket

Need to keep files and documents in sync across multiple Linux machines? Bitpocket provides a no-nonsense solution to the problem. This tiny shell script uses the excellent rsync software to perform the syncing jiggery-pockery. This means that you can have one machine acting as the "main repository", and then have several "client" machines which will be able to sync with it. (This obviously means that all client machines will have the same files). Here is how you configure it.

Keep an Eye on Your GNU/Linux System with Glances

Looking for a no-nonsense command-line tool for monitoring your GNU/Linux system? Glances might be right up your alley. This neat little Python-based utility provides an overview of all key system aspects, including CPU load, disk storage, memory consumption, and network activity. More importantly, the utility does a good job of presenting monitored data in an easy-to-follow manner.

Turn Your Netbook into an Android Device with Android x86

Got an ASUS Eee PC netbook lying around gathering dust? Thanks to the Android x86 project, you can turn it into a neat little device running the latest version 4.0 Ice Cream Sandwich of the Android OS. Installing Android x86 on a regular netbook is not just a geeky way to kill time. If you want to check out the latest version of Android, and you don't feel like forking out for the latest smartphone or tablet, you can repurpose your old netbook as an Android testing platform. If you already have an Android device, but you don't want to go through the rigmarole of rooting it, running Android x86 on a netbook (or as a virtual machine using either Oracle VirtualBox or QEMU virtualization software) provides a perfect solution to the problem.

Upload Photos to Wikimedia Commons with Commonist

Sharing is caring, and there is probably no better way to share your photographic masterpieces with the world than adding them to the Wikimedia Commons pool. While Wikimedia Commons features its own web-based tool for uploading photos, a dedicated tool like Commonist can come in rather handy when you need to upload multiple photos in one fell swoop.

Create a radio station in five minutes with Airtime 2.0 on Ubuntu or Debian

Airtime is the GPLv3 broadcast software for scheduling and remote station management. It supports both soundcard output to a transmitter, and direct streaming to an Icecast or SHOUTcast server. Web browser access to the station's media archive, multi-file upload and automatic metadata import features are coupled with a collaborative on-line scheduling calendar and playlist management. The scheduling calendar is managed through an easy-to-use interface and triggers playout with sub-second precision.

RAW Processing in a Rush with GTKRawGallery

When it comes to processing and managing RAW files, many serious amateurs and professional photographers rely on applications like digiKam and Darktable. But when you need to quickly view and process a handful of RAW files, you might want to consider using a lightweight tool like GTKRawGallery.

Bulk renaming using Thunar

Thunar is a lightweight file manager that comes with Xubuntu and other Xfce-based distributions. It has several useful features not found in other popular file managers, like 'Bulk Rename'. To use this feature, select a group of files in the Thunar file pane and hit the F2 key, or choose Rename from the Edit menu. A window appears with 'before and after' views of your file names, and a drop-down list showing the renaming possibilities.

Object and Camera Path Tracking in Blender - "Monkey See Monkey Do"

Blender has a useful set of constraint-based animation tools which make it fairly simple to animate motion of objects or of the camera along controlled paths. I expect to use this a lot, so I want to make sure I understand how it works. Here I'm going to work out a simple example using the "Suzanne" monkey meshes in Blender 2.49 to demonstrate simple path and tracking constraints with a mesh and with the camera. Because everything is better with monkeys.

Backup your data in Linux with Deja Dup

Hard disks break. Really, they do. When it happens, most people are sadly unprepared: even the most experienced computer person only recovers a (big?) portion of their data after a crash. Even today, with cloud computing. The reason? Backing up is tricky. If you use GNU/Linux or Ubuntu, it's easy enough to make an incremental backup using rsync and gpg. If you have no idea what this means, don't worry: yu will be able to use them without even knowing it.

Welcome to Déjà Dup, the best backup gem I have ever seen.

Staying happy with Gnumeric: finding the leading apostrophe

In my previous article about GNUMeric , entering data with a leading apostrophe, as in '12/3, ensures that the 12/3 will be interpreted by Gnumeric as text, even when the cell is formatted 'General'.

But Gnumeric displays the 12/3 without the apostrophe. It's hidden. This can lead to unpleasant little surprises when sorting groups of cells, some of which contain hidden apostrophes and some of which don't.

Staying happy with Gnumeric: text as "text" (instead of "dates")

Gnumeric is an excellent spreadsheet application and gets a lot of use in our house. Every now and then, though, you can hear a "!Q#z$%* Gnumeric!" from me or my wife, because we didn't pay attention to cell formatting.

By default, every cell is formatted 'General', which means Gnumeric guesses what type of data you enter in that cell. Gnumeric seems to be particularly fond of dates, and strings that are definitely not dates get interpreted as dates anyway. If I enter 12/3, Gnumeric uses my Australian date format preferences and displays 12/3/2012.


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