Archives For jimingkui

Free-software planetarium Stellarium 0.19.1 was released today with numerous bug-fixes, updates, and improvements.

Changes in Stellarium 0.19.1 include:

  • Allow to search an inactive meteor showers in Search Tool/Lists tool
  • Added ‘Azimuth vs. Time’ graph into AstroCalc/Graphs tool
  • Added feature to show tracks for latest several selected planets
  • Added tools for jumping to the next or previous time of rising, transit or setting for selected object.
  • Added hour angle and sidereal time to infomap.
  • Updated DSO textures, planetary nomenclature, list of asterisms.
  • Numerous fixes and other updates.

How to Install Stellarium 0.19.0 in Ubuntu:

The official Stellarium Ubuntu PPA has made the new release packages for Ubuntu 16.04, Ubuntu 18.04, Ubuntu 18.10, Ubuntu 19.04.

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

sudo add-apt-repository ppa:stellarium/stellarium-releases

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

2. Then upgrade Stellarium from an existing release with Software Updater utility:

Or run following commands to install the software for the first time:

sudo apt-get update

sudo apt-get install stellarium

Uninstall:

To remove the software, either use your system package manager or run command:

sudo apt-get remove --autoremove stellarium

And remove the PPA via “Software & Updates” utility under Other Software tab.

This quick tutorial shows beginners how to list and edit all startup applications or services in the Startup Applications utility in Ubuntu 18.04 and higher.

In the default Ubuntu Gnome desktop, there’s a Startup Applications utility allows to add, remove, or edit system startup applications or services.

While most startup apps or services are hidden, it shows only a few applications or even is empty.

1. To display all hidden startup applications or services, simply open terminal (Ctrl+Alt+T) and run command:

sudo sed -i 's/NoDisplay=true/NoDisplay=false/g' /etc/xdg/autostart/*.desktop

Type user password when it prompts and hit Enter.

Then restart the utility and you’ll see a large list of applications. You MUST be careful as changing them may break your desktop.

2. And to hide them again, simply run command in terminal:

sudo sed -i 's/NoDisplay=false/NoDisplay=true/g' /etc/xdg/autostart/*.desktop

Vivaldi web browser released new stable version 2.6 today with improved security, profile management and more.

Vivaldi 2.6 release highlights:

  • Add Privacy option to block abusive ads.
  • More personality to user profiles
  • Filter saved passwords in Settings → Privacy.
  • Add unread tab counter to the left panel
  • Add Razer headphone devices support for Razer Chroma
  • And various other changes.

How to Install Vivaldi 2.6 in Ubuntu:

The official Ubuntu .DEB packages are available for download at the link below:

Grab the deb matches your OS, then install it via Ubuntu Software or Gdebi package manager. Or run command in terminal:

sudo dpkg -i ~/Downloads/vivaldi-stable_2.6*.deb

Vivaldi also has apt repository, with it you can install the browser and get future updates through Software Updater utility.

Open terminal either via Ctrl+Alt+T keyboard shortcut or by searching for terminal from application menu. When it opens, run following commands one by one:

1. Download and install the repository keyring:

wget -qO- https://repo.vivaldi.com/archive/linux_signing_key.pub | sudo apt-key add -

Typer user password when it prompts and hit Enter to continue.

2. Add Vivaldi repository via command:

sudo add-apt-repository 'deb https://repo.vivaldi.com/archive/deb/ stable main'

3. Finally check updates and install the web browser via command:

sudo apt update && sudo apt install vivaldi-stable

Or upgrade from an old version via Software Updater utility.

(Optional): To remove Vivaldi apt repository from you system, launch Software & Updates and navigate to Other Software tab.

Pick is a simple open-source color picker application for Ubuntu Linux. It supports history by remembering last colors where you got them from.

Pick lets you pick colours from anywhere on your screen. Choose the colour you want and Pick remembers it, names it, and shows you a screenshot so you can remember where you got it from.

Zoom all the way in to pixels to pick just the right one. Show your colours in your choice of format: rgba() or hex, CSS or Gdk or Qt, whichever you prefer. Copy to the clipboard ready for pasting into code or graphics apps.

For Ubuntu 18.04 and higher, you can easily install the tool from Ubuntu Software as it has been made as snap package.

For Ubuntu 16.04, open terminal (Ctrl+Alt+T) and install snapd first:

sudo apt-get install snapd

Then install the Pick color picker via command:

sudo snap install pick-colour-picker

Once installed, launch the tool from application menu and enjoy.

Qmmp, Qt based audio player, released version 1.3.3 with improvements and bug fixes. Here’s how to install it in Ubuntu 16.04, Ubuntu 18.04, Ubuntu 18.10, Ubuntu 19.04.

Qmmp 1.3.3 release highlights:

  • added float output support for PulseAudio, ALSA and OSS4
  • added AppStream information
  • added more icon sizes
  • improved channel conversion
  • fixed feature to remove tracks when using quick search in the qsui plugin
  • fixed crash on some corrupted archives
  • fixed logo animation in the qsui plugin
  • fixed freezing in the ffmpeg plugin
  • translation updates.

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:forkotov02/ppa

Input your password (no asterisk feedback while typing) and hit Enter to continue.

2. If a previous version exists, upgrade Qmmp using Software Updater:

Or run commands to install or upgrade Qmmp and its plugins:

sudo apt-get update

sudo apt-get install qmmp qmmp-plugin-pack

For qt4 version, use qmmp-qt4 and qmmp-plugin-pack-qt4 instead in the last command.

Uninstall:

You can manage the PPA repository via Software & Updates utility, under Other Software tab.

To remove Qmmp music player, either use your system package manager or run command:

sudo apt-get remove --autoremove qmmp qmmp-*

Wing Python IDE 7 now can be easily installed via Snap package in Ubuntu 16.04, Ubuntu 18.04, Ubuntu 18.10, Ubuntu 19.04, and higher.

Snap is a containerized software package runs in most Linux desktop. The official Wing snap packages include:

  • Wing Pro, full-featured Python IDE for professional developers
  • Wing Personal, free Python IDE for students and hobbyists
  • Wing 101, very simple free Python IDE for beginning programmers

For Ubuntu 18.04 and higher, simply search for and install Wing snap packages in Ubuntu Software:

For Ubuntu 16.04, open terminal and run command to install snapd daemon first.

sudo apt-get install snapd

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

Then install Wing personal 7 via command:

sudo snap install wing-personal7 --classic

Replace wing-personal7 in last command with wing7 for Wing Pro, or wing-101-7 for very simple version.

Uninstall:

To remove the Python IDE, either use Ubuntu Software or run command in terminal:

sudo snap remove wing-personal7

Also replace wing-personal7 with wing7 or wing-101-7 depends on which version you installed.

Leafpad text editor now is available to install via Snap package for Ubuntu 18.04, Ubuntu 19.04, and higher.

Leafpad is a simple GTK+ based text editor aims to be lighter than Gedit and KWrite. It has been removed from Ubuntu repositories since Ubuntu 19.04.

Leafpad snap package maintained by Ken VanDine makes it again easy to install in Ubuntu 19.04 and higher.

Simply open Ubuntu Software utility, search for ‘leafpad’ and you’ll see the snap package. For Ubuntu 19.04 and higher, there’s no native Leafpad Ubuntu package any more.

Or open terminal (Ctrl+Alt+T) and run command to install the snap package:

snap install leafpad --classic

Like normal software package, you can either open Leafpad from files’ context menu ‘Open With’ menu, or launch it from application menu.

GIMP image editor 2.10.12 was released a day ago with mostly fixes for some annoying bugs.

There’s also some cool improvements in GIMP 2.10.12:

  • Improved Curves tool
  • Layers support for TIFF exporting
  • Support for user-installed fonts on Windows
  • Faster painting
  • Improved symmetry painting support
  • Incremental mode in the Dodge/Burn tool
  • Free Select tool now creates a preliminary selection
  • New Offset tool

How to Install Latest GIMP in Ubuntu & Linux Mint:

Ubuntu users can install the latest GIMP via 3 ways: GIMP PPA, Snap package, Flatpak package.

1.) GIMP Snap package:

GIMP Snap is still in v2.10.10 at the moment of writing. As usual it will be updated in a few days.

GIMP Snap is a containerized software package. Once installed, it will be updated automatically when maintainer published a new release package.

For Ubuntu 18.04 and higher, install GIMP snap package from Ubuntu Software:

For Ubuntu 16.04, run following commands one by one to install GIMP snap:

sudo apt-get install snapd
sudo snap install gimp

2.) GIMP PPA:

There’s an unofficial GIMP PPA that maintains native GIMP for Ubuntu packages for Ubuntu 18.04 and higher.

The PPA is not updated at the moment of writing. Check the PPA link above. It should be updated in 2 or 3 days.

1. Open terminal (Ctrl+Alt+T) and run command to add the PPA:

sudo add-apt-repository ppa:otto-kesselgulasch/gimp

2. Then you can upgrade GIMP using Software Updater is an old version was installed.

Or run following command to install GIMP:

sudo apt-get install gimp

3.) GIMP Flatpak:

Flatpak is a containerized software package. GIMP Flatpak package is available in flathub repositoy.

Uninstall:

To remove GIMP snap package, either use Ubuntu Software or run command in terminal:

sudo snap remove gimp

To remove GIMP PPA package, and restore to original status, run command in terminal to purge PPA:

sudo apt install ppa-purge && sudo ppa-purge ppa:otto-kesselgulasch/gimp

Deluge bittorrent client 2.0 was released a few days ago. Here’s how to install it in Ubuntu 18.04, Ubuntu 18.10, Ubuntu 19.04.

Deluge 2.0 was released with following exciting new features:

  • Shiny new logo.
  • Multi-user support.
  • Performance updates to handle thousands of torrents with faster loading times.
  • A New Console UI which emulates GTK/Web UIs.
  • GTK UI migrated to GTK3 with UI improvements and additions.
  • Magnet pre-fetching to allow file selection when adding torrent.
  • Fully support libtorrent 1.2 release.
  • Language switching support.
  • Improved documentation hosted on ReadTheDocs.
  • AutoAdd plugin replaces built-in functionality.

How to Install Deluge 2.0 in Ubuntu:

Deluge stable PPA has built the latest packages for Ubuntu 18.04, Ubuntu 18.10, Ubuntu 19.04 and their derivatives.

Open terminal either via Ctrl+Alt+T keyboard shortcut or by searching for ‘terminal’ from application menu. When it opens, run commands:

1. Run command to add the PPA:

sudo add-apt-repository ppa:deluge-team/stable

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

2. If a previous release was installed, upgrade it via Software Updater:

or run command in terminal to install or upgrade Deluge:

sudo apt install deluge

Uninstall:

To uninstall Deluge PPA, open Software & Updates -> Other Software tab and remove the repository line.

To remove Deluge torrent client, run command in terminal:

sudo apt remove --autoremove deluge

After almost two years of development, Luminance HDR released version 2.6.0 was released yesterday.

Luminance HDR 2.6.0 release highlights:

  • Four new tone-mapping operators: ferwerda, kimkautz, lischinski and vanhateren.
  • Speed up for hdr creation
  • Added post processing gamma and saturation.
  • Great speedup and better memory usage for all tonemapping operators
  • Preview of created HDR in HDR Wizard
  • Other small improvements and bug-fixes as usual.

How to Install Luminance HDR 2.6.0 in Ubuntu 18.04, 19.04

There’s an unofficial PPA contains the latest Luminance HDR packages for Ubuntu 18.04, Ubuntu 18.10, Ubuntu 19.04.

Open terminal either via Ctrl+Alt+T keyboard shortcut or by searching for “Terminal” from application menu. When it opens, run following commands one by one:

1. Run command to add the PPA repository:

sudo add-apt-repository ppa:dhor/myway

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

2. If you have a previous release installed, launch Software Updater (Update Manager) and upgrade the software:

Or run following command to install (or upgrade) Luminance HDR:

sudo apt install luminance-hdr

How to Uninstall:

The PPA repository can be removed by going to System Settings -> Software & Updates -> Other Software tab.

To remove the software, either use your system package manager or run command:

sudo apt remove --auto-remove luminance-hdr