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Archives For November 30, 1999

How to losslessly compress JPG in Ubuntu Linux via wxPackJPG

Last updated: October 5, 2013

wxPackJPG is a simple tool to losslessly compress JPG image files. It can be used to backup image files in the JPEG format. They use about 20% less space, but can be restored to bit-identical files.

wxPackJPG is the GUI for the command-line tool PackJPG. There is already a DotNet-GUI called “PackJPG Options”, but this only runs on Windows and does not use more than one core.

Features of wxPackJPG:

  • It losslessly compresses JPEG image files. For this it uses the library packJPGlib. That means, the resulting files are 100% compatible to packJPG
  • Multithreading: wxPackJPG will use every core to compress JPEG files, if multiple files are selected
  • Multiplatform: Binaries for Windows 32/64 bit (with and without installers) and OS X are provided, source code is available for compilation on Linux and other Unixes.
  • There is a portable version which stores nothing in ini-files or in the registry

wxPackJPG jpg compression tool

Install wxPackJPG via PPA:

The image compression tool is available in PPA for Ubuntu 13.04 Raring, Ubuntu 12.04 Precise, Ubuntu 12.10 Quantal and their derivatives such as Linux Mint, Elementary OS, etc.

To get started, press Ctrl+Alt+T on your keyboard to open terminal. When it opens, run command to add the PPA:

sudo add-apt-repository ppa:dhor/myway

Then update package lists and install the jpg compressor:

sudo apt-get update

sudo apt-get install wxpackjpg

If you don’t want to add the PPA, download the Deb from launchpad.net

For Windows and Mac OS installers, go to Sourceforge. Enjoy!

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A Qt-based Facebook Desktop App for Ubuntu Linux

Last updated: March 21, 2019

This tutorial is going to show you a simple and stylish Facebook browser for your PC. This app provides native Facebook experience in a Facebook styled window plus a system tray icon for providing notifications. This app doesn’t disturbs you by popping out notifications, but it notifies you silently by changing the system tray icon color.

This app uses a simple approach for delivering notifications in the system tray. It reads the number of notifications, messages and friend requests directly from the facebook page, using Javascript calls, without using any components from Facebook SDK.

Install Facebook Desktop App:

This app works on Windows, Mac and Ubuntu (64-bit only). I’ve tested on Ubuntu 13.04 Raring, unfortunately the indicator applet didn’t work for Unity Desktop.

Download the Deb:

For Windows & Mac user, download it from qt-apps.org

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Mendeley Desktop: Best PDF Annotator for Ubuntu Linux

Last updated: September 22, 2013

Want to annotate PDF file in Linux systems? Well, Mendeley Desktop is one of the best choice. Besides being able to highlight & add note to text / rectangle of PDF, it can also display definition of selected text from en.wikipedia.org, share the document via E-mail and sync library with Mendeley Web.

Features:

Mendeley is available as a basic free version, and also in premium payable versions.

  • Mendeley Desktop, based on Qt, runs on Windows, Mac and Linux.
  • Automatic extraction of metadata from PDF papers.
  • Back-up and synchronization across multiple computers and with a private online account.
  • PDF viewer with sticky notes, text highlighting and full-screen reading.
  • Full-text search across papers.
  • Smart filtering, tagging and automatic PDF file renaming.
  • Citations and bibliographies in Microsoft Word, OpenOffice.org and LibreOffice.
  • Import of documents and research papers from external websites (e.g., PubMed, Google Scholar, Arxiv) via browser bookmarklet.
  • BibTeX export/file sync
  • Private groups to collaboratively tag and annotate research papers.
  • Public groups to share reading lists.
  • Social networking features (newsfeeds, comments, profile pages, etc.).
  • Usage-based readership statistics about papers, authors and publications.
  • iPhone app
  • iPad app

    • Install Mendeley Desktop in Ubuntu & Other Linux OSs

    For Ubuntu 13.10, Ubuntu 13.04, Ubuntu 12.04, Linux Mint, Elementary OS and others, download the DEB from the link below:

    Mendeley Desktop for Ubuntu 32-bit | Ubuntu 64-bit

    You may check your system type (32-bit or 64-bit) via System Settings ->Details utility. Once downloaded, install it via below command in terminal (Ctrl+Alt+T). 

    sudo dpkg -i ~/Downloads/mendeleydesktop_*-stable_*.deb

    During installation, the Mendeley Ubuntu repository will be added to your list of software sources. You can then use the standard Ubuntu/Debian software update tools to keep Mendeley up to date.

    For other Linux, Windows, and Mac, download Mendeley Desktop installer from this page.

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    Use Foto Image Viewer and Album Manager on Ubuntu

    Last updated: September 9, 2013

    Foto is a very simple image viewer and album manager written in Vala using Gtk3, Clutter, Cairo and Granite. Here are the screenshots:

    Foto is a new project, and it’s still in early development stage. If you are interested, install it in Ubuntu 13.04, Ubuntu 12.10, Ubuntu 12.04 and Linux Mint via PPA (press Ctrl+Alt+T to open terminal):

    sudo add-apt-repository ppa:erasmo-marin/foto-daily-builds

sudo apt-get update

sudo apt-get install foto

    Or download the DEB from this page

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    How to Watch Live Streams on Ubuntu via Your Favorite Video Player

    Last updated: September 8, 2013

    Want to watch live streams on Ubuntu via your favorite video player? Well, here’s how to do it using Livestreamer which supports most of the big streaming services such as Dailymotion, Livestream, Twitch/Justin.tv, YouTube Live, UStream.

    Livestreamer is a Command Line Interface that pipes video streams from various services into a video player, such as VLC, Mplayer. The main purpose of Livestreamer is to allow the user to avoid buggy and CPU heavy flash plugins but still be able to enjoy various streamed content.

    There is also an API available for developers who want access to the video stream data.

    It’s very easy to use this tool. Let’s say you want to watch the stream located on http://twitch.tv/day9tv, just run below command in terminal (press Ctrl+Alt+T to open it).

    livestreamer twitch.tv/day9tv

    [cli][info] Found matching plugin justintv for URL twitch.tv/day9tv
    Found streams: 240p, 360p, 480p, 720p (best), mobile_high, mobile_low (worst)

    It will find out what streams are available and print them out for you to choose from. Simply give livestreamer the stream as the second argument and playback will start in your video player of choice.

    In this case the best stream is a reference to the stream that is considered to be of highest quality, e.g 720p. The –player argument will specify the video player (It will open VLC as the default player if not specified).

    livestreamer twitch.tv/day9tv best --player mplayer

    Install Livestreamer in Ubuntu, Linux Mint

    Press Ctrl+Alt+T on your keyboard to open terminal. When it opens run below commands to install pip installer:

    sudo apt-get install python-pip

    Then install Livestreamer via pip:

    sudo pip install livestreamer

    This will work on all current supported Ubuntu releases, include Ubuntu 13.10, Ubuntu 13.04, Ubuntu 12.10, Ubuntu 12.04, Ubuntu 10.04 and their derivatives such as Linux Mint and Elementary OS.

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    Terra: Yakuake Alternative for Ubuntu Unity / Gnome / Xfce

    Last updated: August 31, 2013

    Terra is a drop-down terminal emulator based on GTK+3.0. It has a tranparent background and supports multiple terminals with splitting screen horizontally or vertically.

    It’s a good alternative to Yakuake terminal. Here are the screenshots:

    Install Terra in Ubuntu & its derivatives

    For Ubuntu 13.04 Raring, Ubuntu 12.04 Precise, Ubuntu 12.10 Quantal, Linux Mint and Elementary OS. Press Ctrl+Alt+T on your keyboard to open terminal. When it opens, run below commands one by one to install it:

    sudo add-apt-repository ppa:ozcanesen/terra-terminal

sudo apt-get update

sudo apt-get install terra

    Download and install the DEB from this page if you don’t want to add the ppa.

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    Catfish: Advanced File Searching Tool for Ubuntu Linux

    Last updated: August 29, 2013

    Catfish is a versatile file searching tool. It is a search GUI powered by locate and find behind the scenes, with autocompletion from Zeitgeist and locate. The advanced options allow filtering by date and file type. The interface is intentionally lightweight and simple, using only GTK+.

    Features:

    • search files anywhere on your computer, include mounted partitions.
    • search hidden files
    • search files by modified time
    • search files by type

    Install Catfish File Search:

    You can install Catfish file searching tool in Ubuntu 13.04 Raring, Ubuntu 12.10 Quantal, Ubuntu 12.04 Precise and their derivatives, such as Linux Mint and Elementary OS.

    Press Ctrl+Alt+T on your keyboard to open terminal. When it opens, run below commands one by one to install the tool:

    sudo add-apt-repository ppa:catfish-search/catfish-stable

sudo apt-get update

sudo apt-get install catfish

    Once done, you can open it from Unity Dash:

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    Indicator-terminal: Shows Terminal as An Indicator in Panel

    Last updated: August 25, 2013

    Indicator-terminal is an applet in Ubuntu top panel that shows a terminal window for running commands when you click on the icon.

    Install Indicator-terminal in Ubuntu:

    NOTE: This project is still in early development. It has bugs and may break you system. Use it at your own risk!

    There’s a PPA for Ubuntu 13.10 Saucy, Ubuntu 13.04 Raring, Ubuntu 12.10 Quantal. Press Ctrl+Alt+T to open terminal, when it opens, run below commands one by one:

    sudo add-apt-repository ppa:erasmo-marin/indicator-terminal

sudo apt-get update

sudo apt-get install indicator-terminal

    Once installed, restart you machine.

    To remove this indicator, run below commands in terminal:

    sudo apt-get install ppa-purge

sudo ppa-purge ppa:erasmo-marin/indicator-terminal

sudo apt-get remove indicator-terminal
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    TVPVRD: Advanced Digital TV Recorder for Ubuntu Linux

    Last updated: April 4, 2019

    TVPVRD is a highly flexible and configurable server daemon that acts as an advanced digital TV recorder using one or several installed TV capture cards.

    The server manages scheduled recordings and provides an efficient command language interface on a dedicated TCP/IP port. As an alternative interface the daemon also comes with a basic WEB-interface through the daemons built in micro-web-server. To keep the WEB-interface simple only the most common commands are available through this interface.

    The goal with this project is to provide an advanced recording and transcoding (using ffmpeg) server without the need to configure complex databases or GUI. The daemon sits unobtrusively in the background.

    The server is self-contained and uses a plain text database (in XML format) to store and manage recordings. In addition, the server has built-in intelligence to make it as easy as possible to manage and use. Examples are highly flexible commands to specify future recordings and automatic load assessment on the server to avoid starting too many parallel transcoding jobs. The server is completely self-contained and has a small footprint.

    Install TVPVRD in Ubuntu:

    The GetDeb repository provides the latest packages for Ubuntu 13.04 Raring, Ubuntu 12.04 Precise, and a little old versions for Ubuntu 12.10, Ubuntu 11.10 and their derivatives, such as Linux Mint and Elementary OS.

    To Add GetDeb repository, just download and double-click to install the package below (For Linux Mint users, read this post).

    getdeb package

    Once done, install TVPVRD by running below commands in terminal (Ctrl+Alt+T):

    sudo apt-get update; sudo apt-get install tvpvrd

    Use TVPVRD:

    There are two main ways to use tvpvrd:

    1. via command line shell, run man tvpsh to get details
    2. via the built in Webserver (http://localhost:9301/)

    You need to enable the config file by running below command:

    cd /etc/tvpvrd; sudo mv tvpvrd.conf.full.template tvpvrd.conf

    Then edit the file by:

    sudo gedit /etc/tvpvrd/tvpvrd.conf

    There you can change the port, enable web interface by “enable_webinterface=yes” and many other settings.

    For more, see tvpvrd manual.

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    Install Adobe’s Brackets Editor in Ubuntu and Derivatives

    Last updated: March 21, 2019

    As you may know, Brackets is an open-source editor for web design and development built on top of web technologies such as HTML, CSS and JavaScript. The project was created and is maintained by Adobe, and is released under an MIT License.

    What makes Brackets different from other web code editors?

  • Tools shouldn’t get in your way. Instead of cluttering up your coding environment with lots of panels and icons, the Quick Edit UI in Brackets puts context-specific code and tools inline.
  • Brackets is in sync with your browser. With Live Development, Brackets works directly with your browser to push code edits instantly and jump back and forth between your real source code and the browser view.
  • Do it yourself. Because Brackets is open source, and built with HTML, CSS and JavaScript, you can help build the best code editor for the web.

    • Try out Brackets:

    The official download page provides the DEB packages for Debian / Ubuntu and their derivatives, such as Linux Mint, Elementary OS, and so forth.

    Just download and double click the DEB to bring up Ubuntu Software Center and install it. Or run below commands instead once downloaded:

    sudo dpkg -i ~/Downloads/brackets-sprint-*.deb; sudo apt-get -f install

    Once installed, you can find it in Unity Dash.

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