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Saturday, September 9, 2017

Fedora 26 : Installation of dotnet .

Today I tested the dotnet with Fedora 26.
This is the way to install dotnet on Fedora 26 distro using dnf and copr :

Thursday, September 7, 2017

News: New release of PulseAudio.

As we already know: PulseAudio is a network sound server and works well with the Linux operating system.
Now a new version has been released.

PulseAudio 11.0 release notes:
  • Support for newer AirPlay hardware
  • USB and Bluetooth devices preferred over internal sound cards
  • The default sink and source configuration is remembered better
  • Bluetooth HSP headset role implemented
  • Bluetooth HFP audio gateway role implemented (requires oFono)
  • Bluetooth HSP audio gateway and HFP hands-free unit roles can be enabled simultaneously
  • Upmixing can now be disabled without bad side effects
  • Avoid having unavailable sinks or sources as the default
  • Option to avoid resampling more often
  • Option to automatically switch Bluetooth profile to HSP more often
  • Better latency regulation in module-loopback
  • Changed module argument names in module-ladspa-sink and module-virtual-surround-sink
  • Fixed input device handling on Windows
  • Improved Bluetooth MTU configuration (warning! this causes some hardware to not work anymore, see the details below for how to fix it)
  • GNU Hurd support
  • Applications can request LADSPA or virtual surround filtering for their streams
  • Support for 32-bit applications on 64-bit systems 

Wednesday, September 6, 2017

Fedora 26 : The install of PyCharm IDE .

Today I make a new test with PyCharm IDE for python development on linux.
It video show the installation of PyCharm on the Fedora 26 operating system.
As you know , PyCharm is free, open-source and come with a Lightweight IDE for Community.
You can buy it but you will have the Professional Full-featured IDE.

Saturday, September 2, 2017

Fedora 26 : using Huion Giano WH1409 graphic tablet .

If you want to use your Huion Giano WH1409 graphic tablet with Fedora 26 then you need to use DKMS kernel.
Let's start. First you need to have a github account to download this kernel.
Use this commands to install the DKMS kernel from digimend.
$su 
#dnf install dkms git-core 
#git clone https://github.com/DIGImend/digimend-kernel-drivers.git /usr/src/digimend-6
#dkms build digimend/6
#dkms install digimend/6
Now connect the wireless USB dongle and reboot your computer. Take a look at dkms status:
dkms status
If you use VirtualBox then I tested with last version of VirtualBox and works without any settings.
If you want to set your tablet keys then you make custom X11 rules .
First is need to go to this folder: /usr/share/X11/xorg.conf.d/.
Now create 50-huion.conf file and use the configuration tool xsetwacom.
I don't make this settings because the tablet work's good with inkscape software.

Monday, August 28, 2017

Fedora 26 : the MuseScore software.

The development team come with this option for us:
Create, play and print beautiful sheet music

Is about the MuseScore software and music.

  • First, this software come with this features: 
  • Professional music notation software 
  • Completely free, no limitations 
  • Easy to use, yet powerful 
  • Open source Input via MIDI keyboard 
  • Transfer to and from other programs via MusicXML, MIDI and more
You can also make an account on the official website or just use the software. I simply installed it in Fedoar 26 with the dnf tool .
# dnf install mscore
The result is working well, see the next image:

Tuesday, August 15, 2017

News: Google with all features and options.

Not all Google options are available for all countries.
You should make a selection option depending on country and availability.
This will relieve us of unsuccessful attempts and queries to Google.
Here are all the Google options available now.

Tuesday, August 8, 2017

News: Faces of Open Source - website .

I have just discovered today this website named FACES OF OPEN SOURCE.
The development team tells us: Faces of Open Source is an on-going photographic documentation of the people behind the development and advancement of the open source revolution that has transformed the technology industry.
The area is:
  • UNIX 
  •  BSD 
  •  Linux
  •  Languages 
  •  X Windows
They also want to get a book on this subject.

Saturday, August 5, 2017

Fedora 26 : Firefox Test Pilot send large files.

This tool from the Firefox team let you send you to upload and encrypt large files (up to 1GB) to share online.
This creates a link to pass along to whoever you want.
Each link created by Send will expire after 1 download or 24 hours, and all sent files will be automatically deleted from the Send server.
Also, the Firefox Test Pilot send does not require an add-on, and can be used in any modern browser.
See the next video from the official youtube channel.

Tuesday, August 1, 2017

Fedora 26 : Install Google Chrome.

Today I try to install Google Chrome on Fedora 26.
As you know this is one of the fastest and most well liked browsers available.
First I download of the rpm file into my Downloads folder and the I used dnf command to install into Fedora 26:
$ cd ~/Downloads
$ wget https://dl.google.com/linux/direct/google-chrome-stable_current_x86_64.rpm
$ su 
# dnf install google-chrome-stable_current_x86_64.rpm
The result, the Google Chrome browser is installed and run well.

Fedora 26 : reset root password .

Although most believe that they know the answer to this question then in Fedora 26 you have to adopt a method other than the classic one.
Start with select the boot line and press e key to edit.
Find the line with linux16 and add this on the end of this row:

rd.break
Press Ctr+x or F10 keys to reboot.
#mount | grep root
#mount -o remount,rw /sysroot
#mount | grep root
#chroot /sysroot/
#passwd root
...
#touch /.autorelabel
#exit
#reboot

Now you can use the new password for user root to login the system.
I try the old way with init=/bin/bash but I got a panic kernel ( maybe is the SELinux performs a complete file system relabel).
Anyway this solve my problem with reset the root password on Fedora 26 Server.

About rd.break, this interrupt the boot process before control is passed from initramfs to systemd.
The disadvantage of this method is that it requires more steps, includes having to edit the GRUB menu, and involves choosing between a possibly time consuming SELinux file relabel or changing the SELinux enforcing mode and then restoring the SELinux security context for /etc/shadow/ when the boot completes.

Wednesday, July 26, 2017

News: Adobe is planning to end-of-life Flash.

According to this article, Adobe is planning to end-of-life Flash.

This will happen at the end of 2020 and encourage content creators to migrate any existing Flash content to these new open formats.
Adobe will also remain fully committed to working with partners ( Apple, Facebook, Google, Microsoft and Mozilla) to maintain the security and compatibility of Flash content.

The article was posted by ADOBE CORPORATE COMMUNICATIONS ON 

Monday, July 17, 2017

News: Mozilla try recognition systems .

The recognition systems improve the more people use them, but they are closed systems so no one other than Apple, Amazon, or Google.
The project named Project Common Voice website includes an option to donate your voice.
If you opt to do so, a number of sentences will be popped up in your web browser for you to say. Once recorded, you can play them back to check they are acceptable before submitting them to help the voice recognition engine learn.
You need to read a sentence to help our machine learn how real people speak.
The area of interest for this project come with demographic data. You can try this project on the official website.

Saturday, July 15, 2017

News: Google startup program .

This is a new way to start your Google work.
This is a great idea from google maybe some team will agree with this help.
The goals from the Google team to do that is:
FEATURES:
  • GCP and Firebase Credits 
  • Office Hours 
  • 24/7 Support 
  • G Suite Online Training 
  • Advertising for Startups 
The credits come with:
SPARK PACKAGE Get $20,000 in credit for 1 year. Credit can be applied to all Google Cloud Platform and Firebase products.
SURGE PACKAGE Get $100,000 in credit for 1 year. Credit can be applied to all Google Cloud Platform and Firebase products.

Fedora 26 server 64bit - tested VM.

I install Fedora 26 into simple way with the Netinstall Image (64-bit 484MB ) from here.
I used the last VirtualBox to test this Fedora 26 net image.
It took some time because the hardware used is without the dedicated video card and an I5 processor. The basic idea of this test was to see how to install it.
It's interesting to watch: the number of packages installed per time unit, the startup steps for the base installation and the work environment.
The other steps are more complex because it matters what you want to do with this linux. It depends on how much you want to adapt it to your hardware machine or whether you will make it a web server, ftp, sftp or a graphics rendering or video rendering station.
The total installation time in VirtualBox was one hour and seven minutes. The resulting video was modified by changing the number of frames for a faster viewing, (from 72 to 172).
The reason was the first steps to install Fedora not to set a specific linux server.
I use linux command under root account to install and set Fedora 26:
#dnf update 
#dnf upgrade 
#dnf grouplist 
#dnf grouplist -v
#dnf install @cinnamon-desktop
#dnf -y group install "Fedora Workstation"
#dnf install setroubleshoot
#sestatus
#sestatus -v
#getenforce
#dnf install clamtk
#echo "exec /usr/bin/cinnamon-session" >> ~/.xinitrc
#startx
Let's see the record video of this test install :

Friday, July 14, 2017

News: Send files on WhatsApp.

The WhatsApp software lets users share multimedia content, but you can't send files directly to other users.
If you wanted to send unsupported file formats like .apk, .zip etc, you had to rename the file to a supported file format.
For example, if you wanted to send the apk for your favorite app, you’d rename it such that it ends with .txt. I tested with Whatsapp™ For PC extension - Opera add-ons and works great.
I send a document file (.doc) with an approximate size of 5 Mb, without any interruption of the connection and a fluid transfer to the application.

Note:

You need to know also, there’s a limit of 100 MB to any attachment.
The executable file is not allowed ( like: .exe, .dll).
Meanwhile, messaging app Telegram is still leading the pack when it comes to file size restrictions — it has supported 1.5 GB files since its launch.

Monday, July 3, 2017

News: Linux kernel 4.12 released .


On 2 July, Linus Torvalds released the kernel 4.12, and it is available for download on kernel.org.
Linux 4.12 provides support for USB Type C in the form of a port management - that provides the correct power consumption.
Some significant changes are once again from the AMD-GPU driver.
About Data Integrity Protection, the device mapper driver receives an extension called dm_integrity to check the integrity of encrypted data on block devices and to protect it in the long term.
Read more about this news here.

Wednesday, June 7, 2017

DB Browser - tool for databases.

Also is a good tool for learning and test database queries.
About this tool the development team tells us:

DB Browser for SQLite is a high quality, visual, open-source tool to create, design, and edit database files compatible with SQLite. It is for users and developers wanting to create databases, search, and edit data. It uses a familiar spreadsheet-like interface, and you don't need to learn complicated SQL commands. 
  • Controls and wizards are available for users to: 
  • Create and compact database files 
  • Create, define, modify and delete tables 
  • Create, define and delete indexes 
  • Browse, edit, add and delete records Search records 
  • Import and export records as text 
  • Import and export tables from/to CSV files Import and export databases from/to SQL dump files 
  • Issue SQL queries and inspect the results 
  • Examine a log of all SQL commands issued by the application
Under Fedora distro, the package is named: SQLite browser.
To install it just use this:
$ sudo dnf install sqlitebrowser
You can use also with this OS: Windows, macOS X, OSX 10.8 (Mountain Lion) - 10.12 (Sierra), Linux (Arch Linux, Fedora and Ubuntu, and Derivatives).