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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.

In App Review diffimg, simple image comparison tool, Ubuntu 12.04, Ubuntu 13.04

Pogo: A Ultra Lightweight Audio Player for Ubuntu Linux

Last updated: July 23, 2013

Pogo is an ultra lightweight music player for Ubuntu Linux. It is a fork of Decibel Audio Player and supports most common audio formats. Pogo is written in Python and uses GTK+ and gstreamer.

Pogo plays your music. Nothing else. It is both fast and easy-to-use. The clear interface uses the screen real-estate very efficiently. Other features include: Fast search on the harddrive and in the playlist, smart album grouping, cover display, desktop notifications and no music library.

Install Pogo Audio Player:

The developer has created a ppa repository to make it easy to install for Ubuntu and Linux Mint users. So far it supports Ubuntu 13.10 Saucy, 13.04 Raring, 12.10 Quantal, 12.04 Precise, 10.04 Lucid.

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:pogo-dev/daily

After that, update package lists and install Pogo via command below:

sudo apt-get update; sudo apt-get install pogo

In App Review Audio, lightweight audio player, Player, pogo

How to Install Rockbox Utility on Ubuntu 24.04 | 22.04

Last updated: May 19, 2024

This simple tutorial shows you how to install Rockbox Utility on Ubuntu 22.04, Ubuntu 22.04, and Ubuntu 20.04.

What is Rockbox:

As you may know, Rockbox is a free and open source replacement for the standard firmware in various forms of digital audio players (DAPs). It offers an alternative to the player’s operating system, in many cases without removing the original firmware, which provides a plug-in architecture for adding various enhancements and functions. Enhancements include personal digital assistant (PDA) functions, applications, utilities, and games. Rockbox can also retrofit video playback functions on players first released in mid-2000. Rockbox includes a voice-driven user-interface suitable for operation by visually impaired users.

What is Rockbox Utility

Rockbox Utility is a free computer application that is used to install and manage Rockbox on DAPs. It provides automatic installation of Rockbox, as well as themes and voice files, directly onto a DAP with minimal user interaction.

Rockbox Utility is updated frequently as support for new devices is added. Currently supported devices include iPod, iPod Mini, iPod Nano, Archos Jukebox series, Cowon X5, M5, M3, iRiver H10/H100/H300, Mpio HD200, Packard Bell Vibe 500, Philips GoGear, Samsung YH, SanDisk, Toshiba, Olympus. Read more

Features:

Base
- Bootloader installation
- Rockbox installation
Extras
- Fontpack installation
- Theme installation
- Game files installation (i.e. freedoom)
Accessibility
- Install voice file (from the webpage)
- Create voicefile
- Create .talk clips
Uninstallation
- Uninstall bootloader
- Uninstall Rockbox (partial, or full)
Manual
- Access to the Manual of your device
Info
- Shows all installed parts of Rockbox

Install Rockbox Utility:

The Rockbox Utility now provides universal AppImage package for Linux users.

Just go to the download page via the link below:

Download Rockbox Utility

Then click the link to download the package for Linux. At the moment of writing, the latest is RockboxUtility-v1.5.1.AppImage.

After downloaded the package, right-click on it in file manager, go to “Properties”, and enable “Executable as Program” option (under Permissions tab for 22.04 and earlier). Finally, click Run the AppImage will launch the app.

NOTE: Ubuntu 22.04 and higher does NOT support AppImage out-of-the-box. You need to press Ctrl+Alt+T on keyboard to open terminal, then run command to get it support:

sudo apt install libfuse2

In App Review electronic, for, Install Rockbox Utility on Linux Mint, lucid, rockbox

How to Install Subsonic 4.8 on Ubuntu 13.04, 12.10, 12.04

Last updated: September 1, 2013

This simple tutorial is going to show you how to install Subsonic Music Streamer 4.8 on Ubuntu 13.04 Raring, 12.10 Quantal, 12.04 Precise.

Subsonic is open-source, web-based media streamer, providing ubiquitous access to your music and video collection. It supports most media formats, such as MP3, OGG, AAC and any other audio or video format that streams over HTTP.

Features:

Enjoy your music and movies no matter where you are. Share with family and friends.
Browse and manage your media collection with the user-friendly web interface.
Stream music to Android, iPhone and Windows Phone.
Subsonic apps available for Roku, BlackBerry Playbook and many more.
Convert and stream lossless music on the fly.
Manage 100,000+ files in your music collection without hassle.
Download and listen to Podcasts.
Get cover art, lyrics, reviews and other album info from Google, Chartlyrics, allmusic and Wikipedia.

Install Subsonic:

The official website provides the DEB installer for Ubuntu users. It can be download by clicking the below link:

Subsonic-4.8.deb

Subsonic requires Java, so first install OpenJDK from Ubuntu Software Center or Oracle Java from ppa.

Then double-click on the downloaded DEB package and select install on Ubuntu Software Center. Click ‘Ignore and install’ if you get the below dialog.

Change user:

By default the Subsonic process is run as the root user. To improve security it is strongly advised that you run it as a dedicated user with less powerful privileges. You can specify this user by setting the SUBSONIC_USER variable in /etc/default/subsonic.

To do so, press Alt+F2, type in gksudo nautilus to open file browser with root permission. Then change username to yours in the picture.

Note that non-root users are by default not allowed to use ports below 1024. Also make sure to grant the user write permissions in the music directories, otherwise changing album art and tags will fail.

After all, restart your computer and open the Subsonic web page on http://localhost:4040.

In App Review install subsonic on ubuntu 12.04, install subsonic on ubuntu 12.10, install subsonic on ubuntu 13.04, subsonic

Install SoundConverter 2.1.1 on Ubuntu 13.04, 12.10, 12.04

Last updated: July 22, 2013

This simple tutorial shows how to install SoundConverter on Ubuntu 13.04 Raring, 12.10 Quantal, 12.04 Precise and Linux Mint via GetDeb repository.

SoundConverter is a simple sound converter application for the GNOME environment. It reads sound files in any format supported by GStreamer and outputs them in Ogg Vorbis, FLAC, or WAV format, or MP3 format if you have the GStreamer LAME plugin.

SoundConverter aims to be simple to use, and very fast. Thanks to its multithreaded design, it will use as many cores as possible to speed up the conversion. It can also extract the audio from videos.

Tutorial Objectives:

Install SoundConverter 2.1.1 on Ubuntu 13.04, 12.10, 12.04
Enjoy!

To get started, add the GetDeb repository. To do so, press Ctrl+Alt+T to open terminal. When it opens, run below commands to add the repository:

wget http://archive.getdeb.net/install_deb/getdeb-repository_0.1-1~getdeb1_all.deb

sudo dpkg -i getdeb-repository_0.1-1~getdeb1_all.deb

Then you can search for and install soundconverter via synaptic package manager. Or run below commands to update package lists and install:

sudo apt-get update; sudo apt-get install soundconverter

Once installed, open it from Unity Dash.

In App Review 2.1.1, 3.10.1, install sounconverter 2.1.1 linux mint, kernel, synaptic

Klest-crossword: Crossword Puzzle Game and Creator for Ubuntu Linux

Last updated: July 22, 2013

Klest-crossword is a game for professional compiling, editing and easy guessing american and classic the crossword puzzles.

It contains more than 1,000 crossword puzzles to guess and provides a lot of tools for creating a crossword puzzle. It a dictionary of 31 000 Russian words and a dictionary of 41 000 English words.

All functions:

Creating and guessing a crossword puzzle;
Check correctness of guessing a crossword puzzle;
Save state incompletely guessed crossword puzzle;
Automatic creation of crossword puzzle grid (beta)
Automatic compiling;
Semi-automatic compiling;
Creating and editing a dictionary;
Adding / removing words from the dictionary;
Saving created a crossword puzzle grid, as a template for the new;
Editing the font crossword;
Editing the grid of crossword puzzle;
Export crossword: RTF, PDF, PostScript(*.ps), HTML, Text format across Lite, JPG, JPEG, TIFF, BMP, XPM, PNG, XBM, PPM, OpenKlest(*.ok);
Import crossword: Texthttp://qt-apps.org/content/show.php/Klest-crossword?content=144254 format AcrossLite, OpenKlest(*.ok);
Print crossword;
Statistics;

Install Klest-crossword:

The source code and Deb installer are available from SourceForge.

In App Review 3.10.1, editor, exporting, kernel, linux

jNetMap: Open-Source Graphical Network Monitoring and Mapping Tool

Last updated: July 21, 2013

jNetMap is a graphical network monitoring and documentation tool. It will ping all registered devices every x minutes, updating the status according to the result of the ping.

jNetMap helps you to keep an eye on you network. You can draw a graphical representation of your network, and jNetMap will periodically check if the devices are still up or a service is still running. You can also set up E-mail notifications or let jNetMap execute a script when a device goes down or comes up again. Additionally, you may attach notes to a device, initiate an RDP/VNC/SSH connection to a device and much more.

Note: jNetMap is not a network discovery/auditing tool, there are better tools out there for that. And for an enterprise grade monitoring solution, you should check out Nagios instead. The idea here is to have a mission control center-style display for networks.

Install jNetMap on Ubuntu:

The Getdeb repository provides the packages for Ubuntu and Linux Mint user. Supports Ubuntu 10.04 Lucid and higher.

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

wget http://archive.getdeb.net/install_deb/getdeb-repository_0.1-1~getdeb1_all.deb

sudo dpkg -i getdeb-repository_0.1-1~getdeb1_all.deb

sudo apt-get update; sudo apt-get install jnetmap

In App Review

CherryTree: Best Ubuntu Note-Taking App for Programmers

Last updated: July 20, 2013

CherryTree is a hierarchical note taking application, featuring rich text and syntax highlighting, storing data in a single xml or sqlite file.

CherryTree is perfectly suitable not only for taking notes, but also for managing code snippets. The application supports syntax highlighting for many popular programming languages, so you can use the application as a programmer’s scratchpad. You can also insert code snippets directly into notes using so-called code boxes.

Features:

rich text (foreground color, background color, bold, italic, underline, strikethrough, small, h1, h2, h3, subscript, superscript, monospace)
syntax highlighting (only when the rich text is disabled in the current node)
images handling: insertion in the text, edit (resize/rotate), save as png file
lists handling (bulleted, numbered, to-do and switch between them, multiline with shift+enter)
simple tables handling (cells with plain text), cut/copy/paste row, import/export as csv file
codeboxes handling: boxes of automatically highlighted text into normal rich text
alignment of text, images, tables and codeboxes (left/center/right)
hyperlinks (links to webpages, links to nodes/nodes + anchors, links to files, links to folders)
intra application copy/paste: supported single images, single codeboxes, single tables and a compound selection of rich text, images, codeboxes and tables
cross application copy/paste (tested with openoffice and gmail): supported single images, single codeboxes, single tables and a compound selection of rich text, images, codeboxes and tables
copying a list of files from the file manager and pasting in cherrytree will create a list of links to files, images are recognized and inserted in the text
print & save as pdf file of a selection / node / node and subnodes / the whole tree
export to html of a selection / node / node and subnodes / the whole tree
export to plain text of a selection / node / node and subnodes / the whole tree
toc generation for a node / node and subnodes / the whole tree, based on headers h1, h2 and h3
find a node, find in current node, find in all nodes
replace in node names, replace in current node, replace in all nodes
iteration of the latest find, iteration of the latest replace, iteration of the latest applied text formatting
import from basket, cherrytree, gnote, keepnote, knowit, mempad, notecase, tomboy, treepad lite, tuxcards, zim
export to cherrytree file of a selection / node / node and subnodes / the whole tree
password protection (using http://www.7-zip.org/)
tree nodes drag and drop

Install CherryTree on Ubuntu:

CherryTree is available in Ubuntu’s universe repository since Ubuntu 12.04 Precise. Search for and install it from Ubuntu Software Center.

For the latest version, press Ctrl+Alt+T to open terminal and run below commands:

sudo add-apt-repository ppa:vincent-c/cherrytree

sudo apt-get update; sudo apt-get install cherrytree

In App Review precise, ubuntu

How to Install 2ManDVD on Ubuntu 13.04, Linux Mint

Last updated: April 23, 2024

UPDATE: 2ManDVD discontinued! If you want an alternative DVD authoring tool, try DVD Styler.

Here is a guide to install the 2ManDVD DVD Authoring tool on Ubuntu 13.04, 12.10, 12.04 and Linux Mint via getdeb repository.

2ManDVD is a simple DVD authoring and slideshow tool written in QT. The getdeb repository contains the latest packages for Ubuntu and Linux Mint users.

To install it, press Ctrl+Alt+T to open terminal, and follow the below steps:

1.) Click the link below to download getdeb package and then double-click to install it. It adds the repository to your system.

~~Download getdeb package~~

2.) For Linux Mint users, go to Synaptic Package Manager -> Settings -> Repositories -> Other Software Center, scroll down to highlight the line said “http://archive.getdeb.net olivia-getdeb/apps”. Then click Edit:

Linux Mint 13: change from maya to precise-getdeg
Linux Mint 14: change from nadia to quantal-getdeb
Linux Mint 15: change from olivia to raring-getdeb

3.) Update the package lists and install the tool:

sudo apt-get update; sudo apt-get install 2mandvd

Enjoy!

In App Review Install 2ManDVD on Linux Mint

Install Variety Wallpaper Changer on Ubuntu, Linux Mint

Last updated: April 24, 2024

This tutorial will show you how to install Variety wallpaper changer on Ubuntu 13.10, 13.04, 12.04 & Linux Mint 13, 14, 15 via ppa repository.

UPDATE 2024: Variety is available in system repository since Ubuntu 16.04! However, some features are NO longer working since the PPA is not being updated any-more.

To try out variety in Ubuntu 24.04, Ubuntu 22.04, Ubuntu 20.04, Ubuntu 18.04, and Ubuntu 16.04, press “Ctrl+Alt+T” to open terminal, then run 2 commands below one by one:

First refresh system package cache:
```
sudo apt update
```
Then install variety:
sudo apt install variety

To uninstall the app, use command:

sudo apt remove --autoremove variety

Variety is an automatic wallpaper changer, downloader & manager. It makes easy to create Desktop Wallpaper Slideshows on Ubuntu & Linux Mint.

Variety changes your desktop wallpaper on a regular basis, using user-specified or automatically downloaded images. It has an indicator applet on your panel that allows to easily change wallpapers.

Variety can download wallpapers from wallbase.cc, ns223506.ovh.net, wallpapers.net, flickr.com, imgur.com, deviantart.com, interfacelift.com, vladstudio.com.

To install this software, press Ctrl+Alt+T to open terminal, then follow the below steps:

1.) Copy and paste this command and run in terminal, it add the stable ppa to your system.

sudo add-apt-repository ppa:peterlevi/ppa

2.) If you’ve already installed Synaptic Package Manger, open it and click Reload button. Search for and install variety package.

If not, run this command instead:

sudo apt-get update; sudo apt-get install variety

Enjoy!

In App Review, Linux Mint install variety on Linux Mint, variety ppa repository

Archives For App Review

Current Features:

Install DiffImg:

Install Pogo Audio Player:

What is Rockbox:

What is Rockbox Utility

Install Rockbox Utility:

Install Subsonic:

Change user:

Install jNetMap on Ubuntu:

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