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Archives For November 30, 1999

How to Install Jitsi Video Chat and Add Its Repository in Ubuntu

Last updated: July 30, 2013

This simple tutorial will show you how to install the Jitsi Video Calls and Chat & add its repository in Ubuntu 13.04 Raring, 12.04 Precise and 12.10 Quantal.

Jitsi call window

As you may know, Jitsi is an audio/video Internet phone and instant messenger written in Java. It supports some of the most popular instant messaging and telephony protocols such as SIP, Jabber/XMPP (and hence Facebook and Google Talk), AIM, ICQ, MSN, Yahoo! Messenger.

Install Jitsi:

The official download page provides the latest Deb installer for Ubuntu users

Press Ctrl+Alt+T on your keyboard to open terminal. When it opens, run below command to download it:

For 32-bit system:

wget https://download.jitsi.org/jitsi/debian/jitsi_2.2-latest_i386.deb

For 64-bit system:

wget https://download.jitsi.org/jitsi/debian/jitsi_2.2-latest_amd64.deb

Both 32-bit & 64-bit run below command to install the Deb:

sudo dpkg -i jitsi_2.2-latest_*.deb

It installs Jitsi as well as adds its repository to your system so that you’ll receive updates when a new release comes out.

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How to Install yEd Graph Editor in Ubuntu, Linux Mint

Last updated: October 27, 2014

This simple tutorial shows you how to install the yEd Graph Editor in Ubuntu 12.04 Precise, 12.10 Quantal, 13.04 Raring, 13.10 Saucy and Linux Mint.

yEd is a powerful desktop application that can be used to quickly and effectively generate high-quality diagrams. Create diagrams manually, or import your external data for analysis. The automatic layout algorithms arrange even large data sets with just the press of a button.

Install yEd

The official website provides the yEd installer script for 32-bit /64-bit Linux systems, which includes a suitable JRE.

To download this script, press Ctrl+Alt+T on your keyboard to open terminal. When it opens, run below command (check 32-bit or 64-bit via System Settings -> Details):

For 32-bit system:

wget http://www.yworks.com/products/yed/demo/yEd-3.13_64-bit_setup.sh

For 64-bit system:

wget http://www.yworks.com/products/yed/demo/yEd-3.13_64-bit_setup.sh

Before running this script, run below command in previous terminal to give its executable permission.

chmod +x yEd-3.13_*-bit_setup.sh

Finally run the script to bring up setup wizard:

./yEd-3.13_*-bit_setup.sh

Follow the setup wizard. When done, you’ll be able to open yEd Graph Editor in Unity Dash.

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Kernel 3.10.4 is Ready, Install / Upgrade in Ubuntu 13.04, 12.14

Last updated: July 29, 2013

The latest stable Linux Kernel 3.10.4 has been released. This simple tutorial will show you how to install / upgrade this kernel in Ubuntu 13.04 Raring, 12.10 Quantal and 12.04 Precise.

Linux kernel 3.10.4 is an important release, which brings many improvements to IPv4 and IPv6 protocols, as well as many updated drivers and ARM fixes. All users of the 3.10 kernel series are urged to upgrade as soon as possible. See official announcement.

To get started, press Ctrl+Alt+T to open a terminal window, copy and paste below command into terminal and run to download the kernel:

for 32-bit system:

wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.10.4-saucy/linux-headers-3.10.4-031004-generic_3.10.4-031004.201307282043_i386.deb http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.10.4-saucy/linux-headers-3.10.4-031004_3.10.4-031004.201307282043_all.deb http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.10.4-saucy/linux-image-3.10.4-031004-generic_3.10.4-031004.201307282043_i386.deb

for 64-bit system:

wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.10.4-saucy/linux-headers-3.10.4-031004-generic_3.10.4-031004.201307282043_amd64.deb http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.10.4-saucy/linux-headers-3.10.4-031004_3.10.4-031004.201307282043_all.deb http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.10.4-saucy/linux-image-3.10.4-031004-generic_3.10.4-031004.201307282043_amd64.deb

After that, both 32-bit and 64-bit run below command to install the kernel

sudo dpkg -i linux-headers-3.10.4-*.deb linux-image-3.10.4*.deb

Finally apply changes to grub boot loader:

sudo update-grub

You can remove the downloaded packages after the kernel is properly installed.

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How to Install Komodo Edit on Ubuntu 13.04, 12.04, 12.10

Last updated: July 25, 2013

This simple tutorial shows how to install latest Komodo edit on Ubuntu 13.04 Raring, 12.10 Quantal, 12.04 Precise via ppa repository.

Komodo Edit, based on the award-winning Komodo IDE, offers sophisticated support for all major scripting languages, including in-depth autocomplete and calltips, multi-language file support, syntax coloring and syntax checking, Vi emulation, Emacs key bindings. It provides dynamic language expertise for Perl, PHP, Python, Ruby, and Tcl, plus JavaScript, CSS, HTML, and XML, and template languages like RHTML, Template-Toolkit, HTML-Smarty and Django.

Install Komodo Edit

A PPA repository has been created for Ubuntu users. So far it supports Ubuntu 13.04, 12.04 and 12.10.

To add the repository, press Ctrl+Alt+T on your keyboard to open terminal. When it opens, run below commands:

sudo add-apt-repository ppa:mystic-mirage/komodo-edit

After that, update your package lists and install this tool via command below:

sudo apt-get update; sudo apt-get install komodo-edit

Once installed, open it by running komodo command. You may need to manually create launcher shortcut

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Install RawTherapee 4.0.11 on Ubuntu 13.04, 12.04, 12.10

Last updated: September 11, 2019

This simple tutorial shows you how to install the latest RawTherapee 4.0.11 on Ubuntu 13.04 Raring, 12.10 Quantal, 12.04 Precise using PPA repository.

RawTherapee is a cross-platform raw image processing program written in C++, using a GTK+ front-end and a patched version of dcraw for reading raw files. It is notable for the advanced control it gives the user over the demosaicing and developing process.

“The 4.0.11 release includes a number of new features which you can read about below, but just as importantly it contains a large number of speed improvements and bug fixes, so we recommend you update straight away!”

New features:

  • CIECAM02 “Adaptation scene luminosity” now calculated automatically
  • CIECAM02 hot/bad pixel fixer to prevent bright pixels from appearing
  • The Defringe tool is now able to target a range of specific colors without touching others
  • New bundled processing profiles
  • New keyboard shortcuts to apply rank and color labels and a new direct popup menu for color labels, all in the File Browser
  • “Profile Fill Mode” button controls whether to replace missing processing profile values with default ones or not
  • Keyboard shortcuts to open the next/previous image and to synchronize the File Browser strip with the currently opened image
  • New demosaicing algorithms for noisy photos:
    • LMMSE
    • IGV
  • More zoom levels
  • Redesigned save window
  • New functionality of the minima/maxima control points curves editor, see the RawTherapee Manual
  • Support for TIFFfiles with alpha channels
  • Support for 32-bit TIFF files (HDR)
  • Preferences/Batch processing options: all to ‘Add’ and all to ‘Set’
  • Support for
    • Nikon D5200
    • Nikon D7100
    • Nikon COOLPIX A
    • Panasonic Lumix DMC-G5

Install RawTherapee:

The latest release is available for Ubuntu 13.04 Raring, 12.10 Quantal, Ubuntu 12.04 Precise from the ppa repository.

To add the ppa, press Ctrl+Alt+T on your keyboard to open a terminal window. When it opens, run below command:

sudo add-apt-repository ppa:dhor/myway

Then update package lists and install via Synaptic Package Manager. Or you can run below command instead:

sudo apt-get update; sudo apt-get install rawtherapee

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DiffImg: Simple Image Comparison Tool for Ubuntu Linux

Last updated: July 24, 2013

DiffImg is a simple image comparison tool which take two images with the same size as input. Some statitics are computed and the positions where pixel differ are displayed as a color mask.

There are very few image difference tools for Ubuntu Linux. DiffImg is one of them which has a user friendly GUI. It uses OpenCV as backend so it can read and compare 8/16/24/32 bits images without problem but only single channel and RGB image has been take into account, so alpha channel isn’t supported.

Because DiffImg is written with Qt, it runs on Windows and Linux (MacOSX isn’t tested yet) and OS/2. It can read basic formats as BMP, PNG, JPG but also Tiff and OpenExR.

Current Features:

  • Image difference display : a yellow/red mask can overlay the original/modified images.
  • Single/Dual panels mode.
  • Statistic computation: Mean error, RMS error and min/max are computed.
  • Several metrics can be used for computing image difference.
  • Histogram of error.
  • “Slideshow” : DiffImg can compare directory of image, so you can switch to the previous/next comparison if you have two folders with the same image list.
  • Supported files :DifffImg uses Qt plugins to load images, so by default it can read basic formats as BMP, PNG, JPG and OpenCV supported formats (Tiff, OpenExR).
  • Basic batch mode

Install DiffImg:

A PPA repository has been created to make it easy to install for Ubuntu and Linux Mint users. So far, it supports Ubuntu 13.04 Raring, 12.10 Quantal, 12.04 Precise and Linux Mint 13 Maya, 14 Nadia, 15 Olivia.

To add the ppa, press Ctrl+Alt+T on your keyboard to open terminal. When it opens, run below commands:

sudo add-apt-repository ppa:dhor/myway

Then you can update package lists and install the tool via Synaptic Package Manager, or run below command:

sudo apt-get update; sudo apt-get install diffimg

That’s it.

For other systems, Diffimg source code and exe file can be download from SourceForge.

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HotShots 1.2.0 Released: Install it on Ubuntu 13.04, 12.04, 12.10

Last updated: July 24, 2013

The HotShots screenshot tool 1.2.0 has been released. This simple tutorial shows you how to install or upgrade to this version on Ubuntu 13.04 Raring, 12.04 Precise and 12.10 Quantal.

HotShots is an application for capturing screens and saving them in a variety of image formats as well as adding annotations and graphical data (arrows, lines, texts, …). Because HotShots is written with Qt, it runs on Windows and Linux

The new release has some layout changes. The editor has multi-selection, the ability to select shadows on each item, the ability to edit some items (polygon, polyline, and curve) more easily, and the ability to add post-effects to the image background. The uploader adds a user field to define the output template for FTP uploader. The ability to send a document directly to the printer has been added. Slovak, Turkish, Russian, Sinhala, Serbian, Czech, Vietnamese, Basque, Spanish, and Chinese translations have been added.

Install HotShots:

A PPA repository has been created to make it easy to install for Ubuntu and Linux Mint users. So far it supports Ubuntu 13.04 Raring Ringtal, 12.10 Quantal Quetzal, and Ubuntu 12.04 LTS Precise Pangolin.

Press Ctrl+Alt+T on your keyboard to open terminal. When it opens, run below commands to add the ppa:

sudo add-apt-repository ppa:dhor/myway

After that, update package lists and install HotShots screenshot tool via below command:

sudo apt-get update; sudo apt-get install hotshots

Once installed, you can open it from the Unity Dash.

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