Linux Blimp

New distribution images for the Raspberry Pi’s Raspbian operating system appeared on their Download page a week or so ago. The dates of the new images are 2018-10-09 for the Raspbian-only version, and 2018-10-11 for the NOOBS (Raspbian and More) version.

As usual, the Release Notes give a (very brief) overview of what is new and different in this release. If you are interested in this sort of thing, it would be worthwhile to bookmark that page, because the notes for each new release are simply added there, rather than being in a separate document for each release. It currently contains notes going back to 2013-09-10, and it makes for some interesting reading about how Raspbian has evolved over the past five years.

In a nutshell, this release includes:

• a number of changes to the “first-run/startup wizard”, which is not surprising since that was just introduced in the previous release
• a couple of interesting changes which look to me like they are responses to potential security problems (password changes now work properly if the new password contains shell characters? Hmmm. I wonder if this came up simply because some users were having trouble changing passwords, or because some clever users found they could use this to attack the system? Oh, and who ever thought it was a good idea to display the WiFi password by default?)
• updates to the Linux kernel (4.14.71) and Pi firmware
• various other minor updates, bug fixes, new versions and such
• removed Mathematica
• Raspberry Pi PoE HAT support

Those last two are the ones that really produced some excitement in the Raspberry Pi community. Just look at that next to last one… so innocent looking… but then go and look at the discussion in the Pi Forums about it.

For those who might not be familiar with it, Mathematica (and the Wolfram language) is a technical computing system that is very widely used in both education and industry. It has been included on the Raspberry Pi since the beginning, and when you consider that a normal “desktop” license costs €160 for a “student”, or €345 for “home and hobby”, it’s an exceptionally good deal to get it for free with a $35 Raspberry Pi. That makes it a bit easier to understand why some users would be upset about it being removed.

SEE: 20 quick tips to make Linux networking easier (free PDF)

The initial response from the Pi Foundation was that removing it from the base distribution saved about 600MB in the installation image, and the original contract was for five years and that has expired now anyway.

After quite a bit more discussion, it was finally determined that the license has actually been renewed, so Mathematica (and Wolfram) will still be available on the Raspberry Pi, but it isn’t included in the current installation images. It is still available in the Raspbian repositories, and now there is even a “Download Installation Script” button on the aforementioned Wolfram Raspberry Pi page. Oh, and from what I just saw in a recent interview with Eben Upton, they may add it back to the installation image as well.

The other issue, related to the last item in the list above, is the recently released Raspberry Pi PoE HAT. This is an add-on board which allows the Pi to be powered via the ethernet cable. Again, for those who may not be familiar with the concept, this requires that you use a wired network connection (duh!), and it requires that you connect the ethernet cable to a power-providing source, which means a network switch or hub specifically designed to provide power this way.

This time, the problem was (is) that, well, it just doesn’t work very well. Or sometimes not at all. But sometimes, for some people in some installations, it works just fine. Confused? You should be, because absolutely everyone else who is involved in this certainly is. You can read the entire discussion in the Pi Forums — and if you are a technically interested person, it makes for some fascinating reading. As far as I understand it at this point, they have determined that there is something wrong with at least some of the PoE boards, at any rate, they are offering full refunds to anyone who wants them, and they are promising that the problem will be fixed in a new version of the board, which will hopefully be available reasonably soon.

SEE: How to find files in Linux with grep: 10 examples (free PDF)

Remember, though, that “reasonably soon” involves modifying the design to fix whatever the “real” problem is (and as far as i can tell, it’s still not certain that is known at this point), then going through initial manufacturing, testing, final manufacturing and distribution. So I don’t expect to see any new products until at least after the New Year.

Until then, the product status on the Pi Foundation web page has changed back to “Coming Soon”, and most (but unfortunately not all) resellers have stopped offering the existing boards.

One last thing I want to say about all of this. Some people have taken one or both of these situations as an opportunity to bash the Raspberry Pi and the Pi Foundation (again). I find that to be extremely unfortunate. I have been a huge fan of the Raspberry Pi since the first time I ever saw one (well, read about one, actually).

I think they do a great job, and their dedication to both the product and their users has been fantastic. Yes, there are a few things about it which could be improved; yes, there are now alternatives available which are “better” in various ways. But no one works harder than the crew at the Pi Foundation, and no one has contributed anywhere near as much to education as they have with the Picademy, or to children and hobbyists through their events, code clubs and such.

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The developers at Kali Linux have released a Vagrant distribution of their latest version. Here is a look at that release – and at the Vagrant tool itself

Hands-on with MX Linux: A pleasant, easy-to-install Linux distribution

MX Linux is a descendant/spin-off from Antix and MEPIS Linux. I want to see what it is like to install and run on both UEFI and MBR laptops.

Hands-on with Linux Mint Debian Edition 3 Beta

The long-awaited LMDE update is finally (really) on the way!

Linux phone battery bug: Purism’s Librem 5 delayed until April 2019

Purism gave its Librem 5 phone an updated SoC, but found it has a battery-draining bug that’s delayed production.

Even Linus Torvalds doesn’t completely understand the Linux kernel

In a wide-ranging interview at Open Source Summit, Torvalds talked about programmers, Linux, and open-source development.

Linux distribution comparison chart (Tech Pro Research)

If you’re new to the world of Linux and trying to figure out which distribution is right for your needs, this chart can help.

Microsoft’s obsession with Windows is ending, and I couldn’t be happier (CNET)

Commentary: It’s all about AI and the web now.

How to expose an internal Linux server to the internet with PageKite (TechRepublic)

Jack Wallen shows you how to easily expose an internal Ubuntu server to the outside world with the help of PageKite.

Source

This tutorial shows you how to install Kazam screen recorder and explains how to record screen in Ubuntu. The guide also lists useful shortcuts and handy tips for using Kazam.

Kazam is one of the best screen recorders for Linux. To me, it’s the best screen recording tool. I have been using it for years. All the video tutorials on YouTube have been recorded with Kazam.

Some of the main features of Kazam are:

• Record entire screen, part of screen, application window or all screens (for multi-monitor setup)
• Take screenshots
• Keyboard shortcut support for easily pausing and resuming while recording screen
• Record in various file formats such as MP4, AVI and more.
• Capture audio from speaker or microphone while recording the screen
• Capture mouse clicks and key presses
• Capture video from webcam
• Insert a webcam window on the side
• Broadcast to YouTube live video

Like the screenshot tool Shutter, Kazam is also not being actively developed for the last couple of years. And like Shutter, the present Kazam release works just fine.

I am using Ubuntu in the tutorial. The installation instructions should work for other Ubuntu-based distributions such as Linux Mint, elementary OS etc. For all the other distributions, you can still read about using Kazam and its features.

Install Kazam in Ubuntu

Kazam is available in the official repository in Ubuntu. However, the official repository consists Kazam version 1.4.5, the last stable version of Kazam.

Kazam Version 1.4.5

Kazam developer(s) also worked on a newer release, Kazam 1.5.3. The version was almost sable and ready to release, but for unknown reasons, the development stopped after this. There have been no updates since then.

You can use either of Kazam 1.4.5 and 1.5.3 without hesitating. Kazam 1.5 provides additional features like recording mouse clicks and key presses, webcam support, live broadcast support, and a refreshed countdown timer.

Kazam Version 1.5.3

It’s up to you to decide which version you want to use. I would suggest go for version 1.5.3 because it has more features.

You can install the older Kazam 1.4.5 from the Software Center. You can also use the command below:

sudo apt install kazam

If you want to install the newer Kazam 1.5.3, you can use this unofficial PPA that is available for Ubuntu 18.04 and 16.04:

sudo add-apt-repository ppa:sylvain-pineau/kazam
sudo apt-get update
sudo apt install kazam

You also need to install a few libraries in order to record the mouse clicks and keyboard presses.

sudo apt install python3-cairo python3-xlib

Recording your screen with Kazam

Once you have installed Kazam, search for it in the application menu and start it. You should see a screen like this with some options on it. You can check the options as per your need and click on capture to start recording screen with Kazam.

Screen recording with Kazam

It will show you a countdown before recording the screen. The default wait time is 5 seconds and you can change it from Kazam interface (see the previous image). It gives you a breathing time so that you can prepare for your recording.

Countdown before screen recording

Once the recording starts,the main Kazam interface disappears and an indicator appears in the panel. If you want to pause the recording or finish the recording, you can do it from this indicator.

Pause or finish screen recording

If you choose to finish the recording, it will give you the option to “Save for later”. If you have a video editor installed in Linux, you can also start editing the recording from this point.

Save recording

By default it prompts you to install the recording in Videos folder but you can change the location and save it elsewhere as well.

That’s the basic you need to know about screen recording in Linux with Kazam.

Now let me give you a few tips on how to utilize more features in Kazam.

Getting more out of Kazam screen recorder

Kazam is a featureful screen recorder for Linux. You can access its advanced or additional features from the preferences.

Accessing Kazam preferences

Autosave screen recording in a specified location

You can choose to automatically save the screen recordings in Kazam. The default location is Videos but you can change it to any other location.

Autosave in a chosen location

Avoid screen recording in RAW mode

You can save your screen recordings in file formats like WEBM, MP4, AVI etc. You are free to choose what you want. However, I would advise avoiding RAW (AVI) file format. If you use RAW file format, the recorded files will be in GBs even for a few minutes of recordings.

It’s wise to verify that Kazam is not using the RAW file format for recording. If you ask my suggestion, prefer H264 with MP4 file format.

Don’t use RAW files

Capture mouse clicks and key presses while screen recording

If you want to highlight when a mouse was clicked, you can easily do that in the newer version of Kazam.

Record mouse clicks

All you have to do is to check the “Key presses and mouse clicks” option on the Kazam interface (the same screen where you press Capture).

Use keyboard shortcuts for more efficient screen recordings

Imagine you are recording screen in Linux and suddenly you realized that you have to pause the recording for some reasons. Now, you can pause the recording by going to the Kazam indicator and selecting the pause option. But this activity of selecting the pause option will also be recorded.

You can edit out this part later but it unnecessarily adds to the already cumbersome editing task.

A better option will be to use the keyboard shortcuts in Ubuntu. Screen recording becomes a lot better if you use the shortcuts.

While Kazam is running, you can use the following hotkeys:

• Super+Ctrl+R: Start recording
• Super+Ctrl+P: Pause recording, press again for resuming the recording
• Super+Ctrl+F: Finish recording
• Super+Ctrl+Q: Quit recording

Super key is the Windows key on your keyboard.

The most important is Super+Ctrl+P for pausing and resuming the recording.

You can further explore the Kazam preferences for webcam recording and YouTube live broadcasting options.

Do you like Kazam?

I am repeating myself here. I love Kazam. I have used other screen recorders like SimpleScreenRecorder or Green Recorder but I feel a lot more comfortable with Kazam.

I hope you like Kazam for screen recording in Ubuntu or any other Linux distribution. I have tried highlighting some of the additional features here to help you with a better screen recording.

What features do you like about Kazam? Do you use some other screen recorder? Do they work better than Kazam? Please share your views in the comments section below.
Source

GNOME Boxes is an open source application that allows users to access remote or virtual systems. It is distributed as part of the GNOME project and uses the well known Qemu software for the actual virtualization.

Features at a glance

The application can be used to connect to a local virtual machine, connect to a work machine from home, view, access and use remote systems, as well as local and remote virtual machines.

In addition, the program allows users to access, view and use virtual machines that are stored on removable media like USB sticks or external hard disk drives, as well as to configure access for various software on a local virtual machine.

Furthermore, GNOME Boxes can be used to view, access and use shared machines and connections, share connections, search for connections, upload and publish virtual machines, and organize favorites.

Designed for GNOME

The user interface follows the GNOME HIG (Human Interface Guidelines) and presents users with an empty window, where their only choice is to press the “New” button in order to create a box.

Getting started with GNOME Boxes

Creating a box will enable users to use another operating system directly from your current session, as well as to connect to an existing machine over the network, or create a virtual machine that runs on top of your computer.

It supports ISO images, pause, resume and force shutdown of existing virtual machines. Another interesting feature is that it doesn’t create virtual hard disk images on your local disk drive, instead it starts the boot medium image immediatelly.

While its run-time dependencies include shared-mime-info, among its build-time requirements we can mention Qemu, Vala, GTK+, Clutter-GTK, GUdev, as well as the libvirt-glib and libosinfo libraries.

Bottom line

Summing up, GNOME Boxes is a very good replacement for the old Vinagre application that was used under the GNOME desktop environment to connect to remote machines through SSH, RDP, Spice and VNC protocols, as well as for Oracle’s VirtualBox virtualization software.

Source

Watch the keynotes LIVE next week at Open Source Summit & ELC + OpenIoT Summit Europe.

Open Source Summit & ELC + OpenIoT Summit Europe is taking place in Edinburgh, UK next week, October 22-24, 2018. Can’t make it? You’ll be missed, but you don’t have to miss out on the action. Tune into the free livestream to catch all of the keynotes live from your desktop, tablet or phone! Sign up now >>

Hear from the leading technologists in open source! Get an inside scoop on:

• An update on the Linux Kernel
• Diversity & inclusion to fuel open source growth
• How open source is changing banking
• How to build an open source culture within organizations
• Human rights & scientific collaboration
• The future of AI and Deep Learning
• The future of energy with open source
• The parallels between open source & video games

Live video streaming of the keynote sessions from Open Source Summit & ELC + OpenIoT Summit Europe will take place during the following times:

Monday, October 22

9:00 – 10:20 (BST)

Watch keynotes from Open Invention Network, LF Energy, Intel, LWN.net, and The Linux Foundation.

Tuesday, October 23

9:00 – 10:20 (BST)

Watch keynotes from Vibrant Data, Microsoft, IBM, and Human Rights Data Analysis Group.

Wednesday, October 24

9:00 – 10:00 (BST)

Watch keynotes from Max Planck Institute for Gravitational Physics, IBM, and Mifos Initiative.

View the full keynote schedule >>

Sign up for free live stream now >>

Source

 

Binary Domain is a 3rd person team action shooter. Play as Dan Marshall and lead his team through high-tech Tokyo in 2080. Literally command your team members with voice commands as you encounter intelligent robot armies that have no fear of death. Upgrade your teams weapons & abilities and lead them through and underground wasteland with no hope of survival.

Follow my step-by-step guide on installing, configuring and optimizing Binary Domain in Linux with PlayOnLinux.

Note: This guide applies to the Steam version of Binary Domain. Other versions may require additional steps.Tips & Specs:
To learn more about PlayOnLinux and Wine configuration, see the online manual: PlayOnLinux Explained

Mint 18.3 64-bit

PlayOnLinux: 4.2.12
Wine: 3.0

Wine Installation
Click Tools

Select “Manage Wine Versions”

Look for the Wine Version: 3.0

Select it
Click the arrow pointing to the right

Click Next

Downloading Wine

Extracting

Downloading Gecko

Installed

Wine 3.0 is installed and you can close this window

Downloading Steam
Go To: http://www.steampowered.com

Click Install Steam

Do not click “Install Steam Now”

It will automatically install Linux Steam
Select Windows Steam instead
click “Windows” under the green button

Navigate to your desktop

Click Save

PlayOnLinux Setup
Launch PlayOnLinux

Click Install

Click “install a non-listed program”

Click Next

Select “Install a program in a new virtual drive”

Click Next

Name your virtual drive: binarydomain

Click Next

Check all three options:

 

• Use another version of Wine
• Configure Wine
• Install some libraries

Click Next

Select Wine 3.0

Click Next

Select “32 bits windows installation”

Click Next

Configure WineApplications Tab
Windows Version: Windows 7

Click Apply

Graphics Tab
Check: Automatically capture the mouse in full-screen windows

Click Ok

PlayOnLinux Packages (Libraries, Components, DLL’s)

Check the following libraries:

 

• POL_Install_corefonts
• POL_Install_d3dx9
• POL_Install_tahoma

Click Next

Note: All packages will automatically download and installInstalling Steam
Click Browse

Navigate to your desktop

Select: SteamSetup.exe
Click Open

Click Next

Click Next

Check: I accept the license…

Click Next

Click Next

Click Next

Click Install

Click Finish

Updating Steam

Click the “X” to close Steam login

PlayOnLinux Shortcut
Select Steam.exe

Click Next

Name your shortcut: Binary Domain

Click Next

Select “I don’t want to make another shortcut”

Click Next

PlayOnLinux Configure
Back to PlayOnLinux

Click Configure

General Tab
Wine Version: 3.0

Arguments: -no-dwrite
This fixes any missing font problems

Note: Click the + to download other versions of Wine. Click the down-arrow to select other versions of wineDisplay Tab
Video Memory Size: Select the size of Memory your video card/chip uses

Close Configure

Steam Server Error
Before launching Steam you will get a Server Error for every game

Navigate to your game’s wineprefix:

 

Code:

/home/username/.PlayOnLinux/wineprefix/alienbreed3/drive_c/Program Files/Steam/config/
Open config.vdf with a text editor

Copy this code below

Code:

“CS” “valve511.steamcontent.com;valve530.steamcontent.com;valve548.steamcontent.com;valve539.steamcontent.com;valve519.steamcontent.com;valve555.steamcontent.com;valve504.steamcontent.com;valve529.steamcontent.com;valve558.steamcontent.com;valve500.steamcontent.com;valve561.steamcontent.com;valve532.steamcontent.com;valve540.steamcontent.com;valve502.steamcontent.com;valve544.steamcontent.com;valve528.steamcontent.com;valve556.steamcontent.com;valve520.steamcontent.com;valve542.steamcontent.com;valve538.steamcontent.com;valve551.steamcontent.com;valve521.steamcontent.com;valve564.steamcontent.com;valve516.steamcontent.com;valve535.steamcontent.com;valve541.steamcontent.com;valve533.steamcontent.com;valve536.steamcontent.com;valve557.steamcontent.com;valve559.steamcontent.com;valve537.steamcontent.com;valve508.steamcontent.com;valve525.steamcontent.com;valve565.steamcontent.com;valve566.steamcontent.com;valve514.steamcontent.com;valve545.steamcontent.com;valve517.steamcontent.com;valve547.steamcontent.com;valve549.steamcontent.com;valve503.steamcontent.com;valve515.steamcontent.com;valve506.steamcontent.com;valve562.steamcontent.com;valve526.steamcontent.com;valve543.steamcontent.com;valve522.steamcontent.com;valve518.steamcontent.com;valve509.steamcontent.com;valve550.steamcontent.com;valve552.steamcontent.com;valve505.steamcontent.com;valve553.steamcontent.com;valve512.steamcontent.com;valve546.steamcontent.com;valve554.steamcontent.com;valve510.steamcontent.com;valve563.steamcontent.com;valve501.steamcontent.com;valve531.steamcontent.com;valve523.steamcontent.com;valve524.steamcontent.com;valve507.steamcontent.com;valve560.steamcontent.com;valve567.steamcontent.com;valve513.steamcontent.com;valve1601.steamcontent.com;valve164.steamcontent.com;valve1615.steamcontent.com;valve1602.steamcontent.com;valve1604.steamcontent.com;valve1608.steamcontent.com;valve1603.steamcontent.com;valve1606.steamcontent.com;valve1609.steamcontent.com;valve1618.steamcontent.com;valve1617.steamcontent.com;valve1613.steamcontent.com;valve1607.steamcontent.com;valve1611.steamcontent.com;valve1614.steamcontent.com;valve1619.steamcontent.com;valve1616.steamcontent.com;valve1612.steamcontent.com;valve1610.steamcontent.com;valve165.steamcontent.com;valve1605.steamcontent.com;valve954.steamcontent.com;valve955.steamcontent.com;valve904.steamcontent.com;valve901.steamcontent.com;valve957.steamcontent.com;valve953.steamcontent.com;valve956.steamcontent.com;valve950.steamcontent.com;valve905.steamcontent.com;valve952.steamcontent.com;valve902.steamcontent.com;valve907.steamcontent.com;valve958.steamcontent.com”

Go to the line

“InstallConfigStore”
{
“Software”
{
“Valve”
{
“Steam”
{
“CM”

Paste in a new line under the “CM” line with all the IP Addresses

Save config.vdf

Launching Steam
Select Binary Domain

Click Run

Note: Click debug to see errors and bugs
Click “Login to existing account”

Login

Find Binary Domain in your Library

Click Install

Uncheck “Create desktop shortcut”

Uncheck “Create start menu shortcut”
Click Next

Click Finish

Wait for Binary Domain to download

Click Play

If you get a DOT Net Framework 3.5 error

Click OK

Optimization
Select Configure at Launch

Click Graphics Configuration
Adjust:

• Resolution
• Antialiasing
• Shadow Quality
• SSAO Quality
• Motion Blur
• VSync
• Windowed Mode
• Field of View

Click “Save and Quit”

Click Play again

Check “Play Binary Domain”
Click Play

Conclusion
Binary Domain is a DirectX 9 game and runs beautifully with Wine 3.0 in fact it probably runs on any version of Wine. Definitely give the newest version a try as well. The only issue I experienced was that typical mouse-look problem where it was extremely sensitive. You can see it in the video. So I turned down the sensitivity in-game and that helped a bit.

Gameplay video

 

Screenshots:

Source

Here are the first of our benchmarks for the GeForce RTX 2070 graphics card that launched this week. In our inaugural Ubuntu Linux benchmarking with the GeForce RTX 2070 is a look at the OpenCL / CUDA GPU computing performance including with TensorFlow and various models being tested on the GPU. The benchmarks are compared to an assortment of available graphics cards and also include metrics for power consumption, performance-per-Watt, and performance-per-dollar.

 

 

The GeForce RTX 2070 as a reminder has 2,304 CUDA cores, 1410MHz base clock speed, 1620MHz boost clock speed, and with its RTX technology is capable of 42T RTX-OPS and 6 Giga Rays/s. The memory with the RTX 2070 is 8GB of GDDR6 and provides a memory bandwidth of 448GB/s.

 

 

There are around 10.8 billion transistors on the RTX 2070’s TU106 GPU core compared to 18.6 billion with the RTX 2080 Ti TU102. While the RTX 2070 is significantly cut-down compared to the RTX 2080 Ti, its price is much lower: while the RTX 2080 Ti flagship card commands a price of $1,199+ (or $799+ for the RTX 2080), the RTX 2070 launch price is at $449 USD or $599 USD for the NVIDIA Founder’s Edition card.

 

 

Like the RTX 2080 series, the RTX 2070 features RT cores for ray-tracing, Tensor cores, DisplayPort 1.4a, and other features in common with the Turing architecture.

 

As NVIDIA didn’t send out RTX 2080 Founder’s Edition review samples and most NVIDIA AIB partners not interested in the (admittedly small) Linux gaming population, I ended up having to buy an RTX 2070 for Linux testing. The retail graphics card I ended up purchasing for the Linux RTX 2070 testing was the EVGA GeForce RTX 2070 XC GAMING (08G-P4-2172-KR). I went with this card simply as it was the cheapest (and closest to reference) model available on launch day. While the RTX 2070 cards are slated to start at $499 USD, this was the cheapest model I could find in stock and came in at $549 USD (or $608 for the fastest shipping and tax).

 

The RTX 2070 has a 175 Watt TDP and requires 6-pin and 8-pin PCI Express power connections.

 

The EVGA GeForce RTX 2070 XC GAMING matches the 1710MHz boost clock speed of the Founder’s Edition card and is aligned with the rest of the RTX 2070 specifications. The RTX 2070 XC GAMING features a dual fan cooler, which EVGA dubs iCX2 cooling and features an EVGA RGB logo.

 

 

EVGA only lists Windows 7 and Windows 10 as the supported operating systems for their GeForce RTX 2070 on their web-site but on the product packaging they do also mention Linux.

Source

Ubuntu MATE 18.04 LTS – See What’s New

Ubuntu MATE 18.04 LTS has been released and announced by Ubuntu MATE project. As part of official ubuntu flavor, this release using the latest MATE Desktop 1.20.1 as default desktop environment. Also introduces numerous improvements and new features, including better support for HiDPI displays, new desktop layouts, as well as support for indicators in all layouts by default.

Ubuntu MATE 18.04 LTS operating system received several improvements. Among these, we can mention the Caja file manager, which can now encrypt your most precious files, Marco window manager, which got hardware acceleration, MATE Dock Applet, which now features icon scrolling and matching, the Brisk Menu applications menu is now enabled by default and MATE Tweak, which now lets you toggle the HiDPI mode more easily.

For more informations you can read at Ubuntu MATE 18.04 LTS release announcements
Source

Oct 18, 2018, 12:00

Codenamed “Cosmic Cuttlefish”, 18.10 continues Ubuntu’s proud tradition
of integrating the latest and greatest open source technologies into a
high-quality, easy-to-use Linux distribution. The team has been hard at
work through this cycle, introducing new features and fixing bugs.

The Ubuntu kernel has been updated to the 4.18 based Linux kernel,
our default toolchain has moved to gcc 8.2 with glibc 2.28, and we’ve
also updated to openssl 1.1.1 and gnutls 3.6.4 with TLS1.3 support.

Ubuntu Desktop 18.04 LTS brings a fresh look with the community-driven
Yaru theme replacing our long-serving Ambiance and Radiance themes. We
are shipping the latest GNOME 3.30, Firefox 63, LibreOffice 6.1.2, and
many others.

Ubuntu Server 18.10 includes the Rocky release of OpenStack including
the clustering enabled LXD 3.0, new network configuration via netplan.io,
and iteration on the next-generation fast server installer. Ubuntu Server
brings major updates to industry standard packages available on private
clouds, public clouds, containers or bare metal in your datacentre.

The newest Ubuntu Budgie, Kubuntu, Lubuntu, Ubuntu Kylin, Ubuntu MATE,
Ubuntu Studio, and Xubuntu are also being released today.

More details can be found for these at their individual release notes:

https://wiki.ubuntu.com/CosmicCuttlefish/ReleaseNotes#Official_flavours

Complete Story

Related Stories:

• Desktop plans for Ubuntu 18.10(May 20, 2018)
• Cue the Cosmic Cuttlefish(May 09, 2018)
• Ubuntu 18.10 Cosmic Cuttlefish New Features(Sep 18, 2018)
• Here’s the New Login Screen of Ubuntu 18.10 (Cosmic Cuttlefish) with Yaru Theme(Aug 01, 2018)
• Ubuntu 18.10 (Cosmic Cuttlefish) Enters Feature Freeze, Beta Lands September 27(Aug 28, 2018)
• Ubuntu 18.10 Brings Cosmic Cuttlefish to the Linux Desktop(Oct 12, 2018)

Source

you have installed zabbix agent on your server. Process zabbix client is up and running but does zabbix server start to receive data from it?

Simplest way to this is to connect to your zabbix server and initiate zabbix_get command! With this command can get to see data from zabbix client.

zabbix_get – Zabbix get utility.

Syntax:

ram@zabbixserver:~$ zabbix_get -s IP_ZABBIX_CLIENT -k ZABBIX_ITEM

Where -s, –host <host name or IP>

Specify host name or IP address of a host.

-k, –key <item key>

Specify key of item to retrieve value for.
Test the connection between zabbix_server to client.

ram@zabbixserver:~$ zabbix_get -s 192.168.101.26 -k agent.ping

1

If u get output 1 means connection is ok and data is received from 192.168.101.26

ram@zabbixserver:~$ zabbix_get -s 192.168.101.26 -k agent.ping

zabbix_get [31561]: Get value error: cannot connect to [[192.168.101.26 ]:10050]: [111] Connection refused

server 192.168.101.26 but zabbix agent is not installed, not running or firewall is blocking or network problem !!
How to check agent version from zabbix server ?

Using zabbix_get command u can easily get agent version.

ram@zabbixserver:~$zabbix_get -s 192.168.101.26 -k agent.version

3.0.6

Get any information from client host without login to host server using zabbix_get command for example load average.

ram@zabbixserver:~$zabbix_get -s 192.168.101.26 -k “system.cpu.load[all,avg5]”

0.410000

Source

19th October 2018

SeaFile is an enterprise file hosting platform with high reliability and performance, there are Community Edition and Professional Edition. SeaFile Community Edition is an open source file storage system, it is an alternative to DropBox, we can synchronize the files between multiple computers or mobile devices using the Seafile client. In this tutorial, we will provide you with a step by step instruction on how to install SeaFile Community Edition on Ubuntu 16.04.

Prerequisites:

• Ubuntu 16.04 with minimum 2GB of RAM
• SSH access with root privileges

1. Log in to your server via SSH:

# ssh root@server_ip

Before starting with the SeaFile installation, it is encouraged to check that our system package database is up to date.

2. Update the system

# apt update
# apt upgrade

The installation requires a working LAMP, stack. If you don’t have a LAMP stack installed, you need to install it first

#apt install lamp-server^

3. Install dependencies

We need to install some dependencies prior to installing SeaFile Community Edition, run the following commands:

# apt install python2.7 libpython2.7 python-setuptools python-imaging python-ldap python-mysqldb python-memcache python-urllib3 python-pip

and run

# pip install boto

4. Install SeaFile

Let’s create a directory to store SeaFile core files.

# mkdir /opt/seafile
# cd /opt/seafile
# wget https://download.seadrive.org/seafile-server_6.3.4_x86-64.tar.gz
# tar -xzvf seafile-server_6.3.4_x86-64.tar.gz
# cd /opt/seafile/seafile-server-6.3.4

Let’s create a password for MySQL root user. If your MySQL root user already has a password, you can skip this step

# mysql_secure_installation

Now we have configured a password for MySQL root user, let’s proceed with the installation

# ./setup-seafile-mysql.sh

During the installation process, you will be asked for MySQL root password and a new password for Seafile database user.

root@rose:/opt/seafile/seafile-server-6.3.4# ./setup-seafile-mysql.sh
Checking python on this machine …
Checking python module: setuptools … Done.
Checking python module: python-imaging … Done.
Checking python module: python-mysqldb … Done.

—————————————————————–
This script will guide you to setup your seafile server using MySQL.
Make sure you have read seafile server manual at

https://github.com/haiwen/seafile/wiki

Press ENTER to continue
—————————————————————–

What is the name of the server? It will be displayed on the client.
3 – 15 letters or digits
[ server name ] seafile

What is the ip or domain of the server?
For example: www.mycompany.com, 192.168.1.101
[ This server’s ip or domain ] 192.168.0.19

Where do you want to put your seafile data?
Please use a volume with enough free space
[ default “/opt/seafile/seafile-data” ]

Which port do you want to use for the seafile fileserver?
[ default “8082” ]

——————————————————-
Please choose a way to initialize seafile databases:
——————————————————-

[1] Create new ccnet/seafile/seahub databases
[2] Use existing ccnet/seafile/seahub databases

[ 1 or 2 ] 1

What is the host of mysql server?
[ default “localhost” ]

What is the port of mysql server?
[ default “3306” ]

What is the password of the mysql root user?
[ root password ]

verifying password of user root …
verifying password of user root … done

Enter the name for mysql user of seafile. It would be created if not exists.
[ default “seafile” ]

Enter the password for mysql user “seafile”:
[ password for seafile ]

Enter the database name for ccnet-server:
[ default “ccnet-db” ]

Enter the database name for seafile-server:
[ default “seafile-db” ]

Enter the database name for seahub:
[ default “seahub-db” ]

———————————
This is your configuration
———————————

server name: seafile
server ip/domain: 192.168.0.19

seafile data dir: /opt/seafile/seafile-data
fileserver port: 8082

database: create new
ccnet database: ccnet-db
seafile database: seafile-db
seahub database: seahub-db
database user: seafile

———————————
Press ENTER to continue, or Ctrl-C to abort
———————————

Generating ccnet configuration …

done
Successly create configuration dir /opt/seafile/ccnet.
Generating seafile configuration …

Done.
done
Generating seahub configuration …

—————————————-
Now creating seahub database tables …

—————————————-

creating seafile-server-latest symbolic link … done

—————————————————————–
Your seafile server configuration has been finished successfully.
—————————————————————–

run seafile server: ./seafile.sh { start | stop | restart }
run seahub server: ./seahub.sh { start | stop | restart }

—————————————————————–
If you are behind a firewall, remember to allow input/output of these tcp ports:
—————————————————————–

port of seafile fileserver: 8082
port of seahub: 8000

When problems occur, Refer to

https://github.com/haiwen/seafile/wiki

for information.

Once completed, you can start SeaFile and SeaHub:

# ./seafile.sh start
# ./seahub.sh start

When starting seahub for the first time, you will be asked for your email address and a password to create a new SeaFile admin

root@rose:/opt/seafile/seafile-server-6.3.4# ./seahub.sh start
LANG is not set in ENV, set to en_US.UTF-8
LC_ALL is not set in ENV, set to en_US.UTF-8
Starting seahub at port 8000 …

—————————————-
It’s the first time you start the seafile server. Now let’s create the admin account
—————————————-

What is the email for the admin account?
[ admin email ] you@yourdomain.com

What is the password for the admin account?
[ admin password ]

Enter the password again:
[ admin password again ]

—————————————-
Successfully created seafile admin
—————————————-

Seahub is started

Done.

Now, you can access your new SeaFile installation at http://YOUR_IP_ADDRESS:8000 or http://yourdomainname.com:8000

5. Configure Apache

To access it without typing the port in the web browser, we need to create an apache virtual host and configure it as a reverse proxy. Apache module proxy_http is not enabled by default, and we need to enable it to run Apache as a reverse proxy.

# a2enmod proxy_http
# nano /etc/apache2/sites-available/yourdomain.com.conf

Add the following lines to the file

<VirtualHost *:80>
ServerName yourdomain.com
DocumentRoot /opt
Alias /media /opt/seafile/seahub/media
RewriteEngine On
<Location /media>
Require all granted
</Location>

ProxyPass /seafhttp http://127.0.0.1:8082
ProxyPassReverse /seafhttp http://127.0.0.1:8082
RewriteRule ^/seafhttp – [QSA,L]

SetEnvIf Authorization “(.*)” HTTP_AUTHORIZATION=$1
ProxyPass / http://127.0.0.1:8000/
ProxyPassReverse / http://127.0.0.1:8000/
</VirtualHost>

Restart apache to apply the configuration changes

# systemctl restart apache2

Now, you can access your SeaFile installation at http://yourdomain.com

6. Create SystemD file

In the previous step, we ran seafile and seahub using the provided bash script. Let’s create systemd files to make it easier to manage the application.

# nano /etc/systemd/system/seafile.service
[Unit]
Description=Seafile hub
After=network.target seafile.service

[Service]
Type=forking
# change start to start-fastcgi if you want to run fastcgi
ExecStart=/opt/seafile/seafile-server-latest/seahub.sh start
ExecStop=/opt/seafile/seafile-server-latest/seahub.sh stop
User=www-data
Group=www-data

[Install]
WantedBy=multi-user.target

# nano /etc/systemd/system/seahub.service

We also need to change the permissions:

# chown -R www-data: /opt/seafile /tmp/seahub_cache
systemctl daemon-reload
systemctl restart seafile
systemctl restart seahub
systemctl enable seafile
systemctl enable seahub

If you want to access your SeaFile installation securely, you can install a free certificate from LetsEncrypt. Follow the steps below to enable HTTPS on your website.

apt-get install software-properties-common python-software-properties
add-apt-repository ppa:certbot/certbot
apt update
apt-get install python-certbot-apache
certbot

In the last command, you will be asked for your email address and the domain name you want to install a certificate to, and whether you want to redirect HTTP to HTTPS or not. Once finished, you can access your SeaFile installation at https://yourdomain.com

That is it, SeaFile has been successfully installed on your Ubuntu 16.04 server.

Of course, you don’t have to Install Seafile on Ubuntu 16.04, if you use one of our Optimized Ubuntu Hosting plans, in which case you can simply ask our expert Linux admins to install Seafile on Ubuntu 16.04 for you. They are available 24×7 and will take care of your request immediately.

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