Krop, a simple graphical tool to crop the pages for PDF files, now can be easily installed via Snap in Ubuntu 14.04, Ubuntu 16.04, and higher.

Krop is a simple graphical tool to crop the pages of PDF files. It is written in Python and relies on PyQT, python-poppler-qt4 and pyPDF for its functionality.

A unique feature of krop is its ability to automatically split pages into subpages to fit the limited screen size of devices such as eReaders. This is particularly useful, if your eReader does not support convenient scrolling.

Krop is available as Snap app in Ubuntu for amd64 and armhf architectures, so you can easily installed it by opening terminal (Ctrl+Alt+T) and run command:

sudo snap install krop

Input your password (no visual feedback while typing) when it prompts and hit Enter.

Once installed, launch the tool form your application launcher and enjoy!

Tip for Ubuntu 14.04, install snapd daemon first if you don’t have it:

sudo apt-get install snapd snapd-xdg-open

Uninstall:

To remove Krop snap package, simply run command in terminal:

sudo snap remove krop

Virtualbox

Oracle VirtualBox 5.1.28, a new maintenance release for the 5.1 series, was released recently with various important bug fixes.

Changes in VirtualBox 5.1.28 include:

  • Fix accidental crashes when using the AC’97 sound emulation
  • Fix crash when default audio input or output devices have changed
  • Fix audio recording when using the ALSA backend
  • Fix audio handle leak when using the OSS backend
  • E1000: fixed a crash related to VLAN traffic over internal network
  • OVF: when importing an appliance with XHCI controller, don’t add an OHCI controller.
  • NAT: apply --natbindip1 to TCP connections
  • Fix in Mac OS X a GUI crash if Spotlight is used from file dialogs
  • Fix in Mac OS X mouse events did not reach host windows behind the transparent VM window
  • Fix creating fixed sized VDI images in Linux host.
  • Fix for Linux 4.4 of openSUSE Leap 42.3
  • Linux Additions: kernel drm driver support for custom EL7 Linux 3.10 kernel
  • A fix to bridged networking to prevent Windows host crash.

Download Install Virtualbox 5.1.28 in Ubuntu:

The official Linux binaries are available for download at the link below:

Download Virtualbox for Linux

For those who want to add Oracle Linux repository to receive Virtualbox updates using “Software Updater” utility, open terminal via Ctrl+Alt+T or from application launcher and do:

1. Add the repository for Ubuntu 14.04, Ubuntu 16.04, Ubuntu 17.04, and derivatives:

sudo sh -c 'echo "deb http://download.virtualbox.org/virtualbox/debian $(lsb_release -cs) contrib" >> /etc/apt/sources.list.d/virtualbox.list'

For Linux Mint 18.x, replace $(lsb_release -cs) in the code with xenial

Virtualbox Official Linux repository

2. Install the gpg key via command:

wget -q https://www.virtualbox.org/download/oracle_vbox_2016.asc -O- | sudo apt-key add -

3. To install virtualbox 5.1 for the first time, run command:

sudo apt-get update && sudo apt-get install virtualbox-5.1

Uninstall:

You can remove Virtualbox Linux repository via Software & Updates utility under Other Software tab.

To remove Virtualbox 5.1, either use your system package manager or run command:

sudo apt-get remove --autoremove virtualbox-5.1

MKVToolNix now is available as Snap app. You can now run the latest 15.0.0 in all current Ubuntu releases, including Ubuntu 14.04, while the official MKVToolNix apt repository only provides packages for Ubuntu 16.04 and higher.

Open terminal via Ctrl+Alt+T or by searching for “terminal” from your application launcher. When it opens, simply run command:

sudo snap install mkvtoolnix-jz

Input your password (no visual feedback while typing) when it prompts and hit Enter.

The snap includes almost all required dependency libraries. Once you installed it, launch the software from your application launcher and enjoy.

For Ubuntu 14.04, you may first install the snapd daemon while it’s not installed by default:

sudo apt-get install snapd snapd-xdg-open

The snap application can co-exist with the traditional packages. If you installed both version of MKVToolNix, and can’t find out which is the snap app from your application launcher, launch the tools via command in terminal:

/snap/bin/mkvtoolnix-jz.gui

For mkv info, merge, extract, etc., see the picture:

Uninstall MKVToolNix snap:

To remove the snap package of MKVToolNix, run following command in terminal:

sudo snap remove mkvtoolnix-jz

Blender 2.79

Blender 2.79 was finally released a day ago after 2 release candidates. Here’s how to install it in Ubuntu 14.04, Ubuntu 16.04, Ubuntu 17.04, and derivatives.

Blender 2.79 release highlights:

  • OpenCL support has improved and should be closer to parity with Blender’s CUDA capabilities.
  • 10~20% faster performance for modern x86_64 CPUs with AVX2
  • automatic DPI support for determining HiDPI displays
  • an overhaul to Blender’s video output support
  • new denoiser, PBR shader, shadow catcher, filmic color management
  • and over 700 bug-fixes.

blender 2.79 splash

How to Install Blender 2.79 in Ubuntu:

The official Blender tarball (non-install) for Linux is available for download at:

Blender Download (non-install version)

For third-party binaries, Blender is also available via Snap and traditional PPA. You can install both or either one via following steps.

Install Blender in Ubuntu via Snap:

Blender 2.79 is also available as snap package, which is large in file, but bundles almost all required libraries. Available for Ubuntu 14.04, Ubuntu 16.04, and higher.

1. For Ubuntu 14.04 only, install snapd daemon if you don’t have it:

sudo apt-get install snapd xdg-open-snapd

2. If you have installed the snap package “blender-tpaw” (2.78c so far), first remove it via:

sudo snap remove blender-tpaw

3. Finally run command to install blender 2.79 snap maintained by another guy:

sudo snap install blender --classic

Install Blender 2.79 via PPA in Ubuntu:

Thomas Schiex’s PPA contains the Blender packages for Ubuntu 14.04, Ubuntu 16.04, Ubuntu 17.04.

NOTE that Blender 2.79 is not ready in the PPA at the moment of writing. Be patient, it will be there in a few days.

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

sudo add-apt-repository ppa:thomas-schiex/blender

2. Then upgrade Blender if you have a previous installed via Software Updater:

upgrade to blender 2.79

or run commands to check updates and install blender package:

sudo apt-get update

sudo apt-get install blender

How to Remove:

To remove Blender packages either use your system package manager or run commands:

To remove Blender snap app, run command:

sudo snap remove blender

To remove Blender installed from PPA, run command:

sudo apt-get remove --autoremove blender

And to remove the PPA repository, launch “Software & Updates” utility and navigate to Other Software tab.

Gradio

Gradio, an open-source GTK+ internet radio application, has reached the 6.0 release.

Now it’s available as snap app while the official PPA can no longer build it for Ubuntu 16.04 due to the old system GTK+3 library.

Gradio 6.0 release highlights:

  • Group your radio stations into collections
  • New sorting options.
  • export and import station library.
  • create and edit stations.
  • New details sidebar, selection system.
  • Gradio 6.0 requires GTK 3.22 or higher
  • and many more.

How to Install Gradio via Snap in Ubuntu:

Open terminal via Ctrl+Alt+T or by searching for “terminal” from app launcher. When it opens, do following steps:

1. For Ubuntu 14.04 only, you need to first install snapd daemon if you don’t have it:

sudo apt-get install snapd snapd-xdg-open

Input your password (no visual feedback while typing) when it prompts and hit Enter.

2. Install Gradio snap app via command:

sudo snap install gradio

3. Install Gnome environment via commands:

sudo snap install gnome-3-24

sudo snap connect gradio:gnome-3-24-platform gnome-3-24:gnome-3-24-platform

Finally launch Gradio desktop radio app from your application launcher and enjoy!

How to Remove:

To remove the snap version of Gradio, simply run following command in terminal:

sudo snap remove gradio