GNU Octave 5.1.0 was announced yesterday as a new major release with Matlab compatibility improvements, and many new and improved functions.

GNU Octave 5.1.0 release highlights:

  • Adds HiDPI support
  • Requires Qt4 >= 4.8, though Qt5 is preferred.
  • Adds many new functions.
  • Printing to raster formats now uses an OpenGL-based method by default
  • New print options for PDF and PostScript
  • A new printing device produces ASCII art for plots
  • The FFTW library is now required for FFT calculations
  • The OSMesa library is no longer used.

How to Install Octave 5.1 in Ubuntu 18.04/16.04:

1. First open terminal (Ctrl+Alt+T) and make sure Flatpak support is enabled by running command:

sudo apt-get install flatpak

For Ubuntu 16.04, you need to add the Flatpak PPA first to be able to install Flatpak framework.

2. Then add the Flathub repository, the best place to get Flatpak apps:

flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo

3. Finally install GNU Octave from the Flathub repository:

flatpak install flathub org.octave.Octave

It will take a few minutes downloading the flatpak package as well as dependency platform if you’re first time installing it.

Like normal applications, you can launch Octave from Gnome app launcher:

The flatpak co-exists with traditional Octave package. You can alternatively run it in command line:

flatpak run org.octave.Octave

Uninstall:

You can remove the Octave flatpak package by running command:

flatpak uninstall org.octave.Octave

And remove flatpak support if you want:

sudo apt-get remove flatpak

Pragha music player 1.3.4 was released few days ago. Here’s how to install it in Ubuntu 16.04, Ubuntu 18.04, Ubuntu 18.10.

While Pragha 1.4 is being close to the final release, Pragha 1.3.4 was released a few days ago as a new maintenance that features:

  • Fixes some border, spacing and margin in all gui.
  • Various improvements to the tag editor dialog.
  • Implement emit CanNext/Prev/Play/Pause/Seek.
  • Use Alt+Return shortcut to edit the selected song.
  • Some backport of improvents to MTP plugin
  • Set user-agent and ssl strict ssl to gstreamer on internet music.
  • Fix second sidebar dont show with accel.
  • Allow apply a custom css. Related to Issue
  • Allows to customize the styles to the distro packagers.

How to install Pragha 1.3.4 in Ubuntu:

There’s an unofficial PPA that contains the latest Pragha packages for Ubuntu 16.04, Ubuntu 18.04, Ubuntu 18.10, and Linux Mint 18.x/19.

1. Open terminal either via Ctrl+Alt+T or by searching for “terminal” from app launcher. When it opens, run command to add the PPA:

sudo add-apt-repository ppa:ubuntuhandbook1/pragha

Type user password (no asterisk feedback due to security reason) when it prompts and hit Enter.

2. Then install the music player either via Synaptic Package Manager or by running commands:

sudo apt-get update

sudo apt-get install pragha

Uninstall Pragha:

To remove the music player, either use Synaptic Package Manager or run command in terminal:

sudo apt-get remove --autoremove pragha

And you can remove the PPA via Software & Updates utility under ‘Other Software’ tab.

Free score writer MuseScore 3 was released a few months ago. Finally the official PPA for MuseScore 3 is available for Ubuntu 18.04, Ubuntu 18.10, and higher.

MuseScore 3 is a new major release that features automatic placement, brand new Mixer and Piano Roll, dark theme, notation improvements, and many other changes.

MuseScore 3 and MuseScore 2.3 can co-exist on one machine. Installation of the MuseScore 3 will create the association with .mscz/.mscx files, but you can keep using both versions of MuseScore on one machine.

How to Install MuseScore 3 via PPA in Ubuntu:

While MuseScore PPA contains the latest 2.3.x packages, a new official PPA for MuseScore 3 was created. You can do following steps to add the PPA and install the score writer.

1. Open terminal either via Ctrl+Alt+T keyboard shortcut or by searching for ‘terminal’ from application menu. When it opens, run command to add the PPA:

sudo add-apt-repository ppa:mscore-ubuntu/mscore3-stable

Type user password (no asterisk feedback due to security reason) when it asks and hit Enter.

2. Then install MuseScore 3 via command:

sudo apt install musescore3

Linux Mint 19 needs to refresh package cache by running command apt update first.

Once installed, launch the software from application menu and enjoy!

Uninstall:

To remove the software, run command in terminal:

sudo apt remove --autoremove musescore3

To remove the PPA, go to Software & Updates -> Other Software tab.

OBS Studio, free live streaming and screen recording software, released version 23.0 recently with many new features. Here’s how to install it in Ubuntu 16.04, Ubuntu 18.04, Ubuntu 18.10.

OBS Studio 23.0 release highlights:

  • Add Limiter audio filter, Expander audio filter.
  • Add VAAPI video encoder on Linux.
  • Add batch remuxing support to the Remux Recordings dialog.
  • Option to automatically remux recordings to MP4 in Advanced settings.
  • Add Decklink output tool to the tools menu.
  • Add an optional Stats dock (disabled by default).
  • Add multi-track audio support to FFmpeg output in advanced output settings.
  • Add an Invert Polarity audio filter.
  • Add VLC source support to the Instant Replay script.
  • Some other enhancements, and many bug-fixes.

How to Install OBS Studio 23 in Ubuntu:

The easiest way is to install the community maintained Snap package which runs in sandbox. For Ubuntu 18.04 and higher, simply install it from Ubuntu Software.

For the official PPA packages, all current Ubuntu releases can do following steps to install the latest OBS Studio.

1. Open terminal either via Ctrl+Alt+T keyboard shortcut or by searching for “terminal” from app launcher. When it opens, run command to add the PPA:

sudo add-apt-repository ppa:obsproject/obs-studio

Type user password (no asterisk feedback) when it prompts and hit Enter.

2. For Ubuntu 14.04 you also need to run command to add another PPA for FFmpeg library:

sudo add-apt-repository ppa:kirillshkrogalev/ffmpeg-next

3. Now you can install OBS-Studio via Synaptic package manager, upgrade the software from an existing release via Software Updater, or simply run commands one by one:

sudo apt-get update

sudo apt-get install obs-studio

Once installed, launch the software from Unity Launcher, Gnome Launcher, or other app launcher and enjoy!

Uninstall:

To remove the software, either use Synaptic package manager or run command in terminal:

sudo apt-get remove --autoremove obs-studio

To remove PPA repositories, launch Software & Updates and navigate to ‘Other Software’ tab.

Battle For Wesnoth in Ubuntu

Battle for Wesnoth released a new regular update for the 1.14 series. Here’s how to install it in Ubuntu 16.04, Ubuntu 18.04, and higher.

Wesnoth 1.14.6 release highlights:

  • Fixed some AI crashes.
  • New parameter default_ai_algorithm for setting the default AI
  • New parameter mp_rank for setting the order in which AIs appear in the MP computer player selection menu
  • New option “Keep saved AI” when reloading games from the MP Create Game screen.
  • Fix Lua AIs using the ai.stopunit_*() functions potentially creating infinite candidate action loops
  • Many fixes and improvements to campaigns.
  • Miscellaneous and bug fixes

How to Install Battle for Wesnoth 1.14.6 in Ubuntu:

For those don’t prefer Flatpak package, use the unofficial PPA though the Wesnoth 1.14.6 package will be available in some days later.

The new release package has been made into Flatpak package, available to install via the Flathub repository.

1. (For Ubuntu 16.04 only), open terminal either via Ctrl+Alt+T keyboard shortcut or by searching for ‘terminal’ from app launcher. When it opens, run command:

sudo add-apt-repository ppa:alexlarsson/flatpak

sudo apt-get update

2. Install flatpak framework via command:

sudo apt-get install flatpak

3. Add flathub repository:

flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo

4. Finally install the flatpak package of Battle for Wesnoth:

flatpak install flathub org.wesnoth.Wesnoth

Once installed, launch the game either from software launcher, or by running command flatpak run org.wesnoth.Wesnoth

(Optional) 5. To remove the game, run command:

flatpak uninstall org.wesnoth.Wesnoth