Sunday, December 29, 2019

Fedora 31 : The VLC zoom effect!

Zoom, zoom ... zoom
This is not the only effect from the VLC application you can set more.
If you want to use the zoom effect when you play movies with VLC software then use these settings:
Tools -> Effects and Filters (Ctr +E) -> Video Effects -> Interactive Zoom
See the next images:

Saturday, December 28, 2019

Fedora 31 : Run Minecraft game on Fedora distro.

To install and play the Minecraft game you need to install Java both versions JRE and JDK.
You need to buy or use only redeem codes from Minecraft Java Edition.
[root@desk mythcat]# cd minecraft-launcher/
[root@desk minecraft-launcher]# dnf install java-latest-openjdk
[root@desk minecraft-launcher]# dnf install java-latest-openjdk-devel
The game can download it from here.
I download the Minecraft.tar.gz file and I unarchive into my folder named minecraft-launcher.
After that I run this command to play the game:
[mythcat@desk minecraft-launcher]$ ./minecraft-launcher 
which: no java in (/home/mythcat/google-cloud-sdk/bin:/home/mythcat/.local/bin

Thursday, December 26, 2019

Fedora 31 : Install Google Chrome.

Most Linux distributions come with dedicated browsers or Firefox browser.
But if you want to use Google services like Google Optimize then you will need Google Chrome browser.
Today I will show you how to install it in the Linux distribution Fedora 31.
[mythcat@desk ~]$ sudo dnf install
[sudo] password for mythcat: 
Last metadata expiration check: 2:29:06 ago on Thu 26 Dec 2019 07:54:58 PM EET.
google-chrome-stable_current_x86_64.rpm              16 MB/s |  59 MB     00:03    
Dependencies resolved.
 Package                   Arch        Version              Repository         Size
 google-chrome-stable      x86_64      79.0.3945.88-1       @commandline       59 M
Installing dependencies:
 liberation-fonts          noarch      1:2.00.5-6.fc31      fedora            8.4 k

Transaction Summary
Install  2 Packages

Total size: 60 M
Total download size: 8.4 k
Installed size: 210 M
Is this ok [y/N]: y

You can start it with this commands:
[mythcat@desk ~]$ google-chrome
google-chrome         google-chrome-stable 

Friday, December 20, 2019

Fedora 31 : Start with tito tool.

If you have some Fedora related project and you want to your output an RPM package, then you can use the tito tool.
This tool comes with the version 0.6.12 and today is finally out!
The team of this software comes with this intro:
Tito is a tool for managing RPM based projects using git for their source code repository.
Let's install it:
[root@desk mythcat]# dnf search tito
Last metadata expiration check: 1:52:16 ago on Fri 20 Dec 2019 06:10:02 PM EET.
========================== Name Exactly Matched: tito ==========================
tito.noarch : A tool for managing rpm based git projects
============================ Summary Matched: tito =============================
mtdev.x86_64 : Multitouch Protocol Translation Library
mtdev.i686 : Multitouch Protocol Translation Library
mtdev-devel.i686 : Multitouch Protocol Translation Library Development Package
mtdev-devel.x86_64 : Multitouch Protocol Translation Library Development Package
[root@desk mythcat]# dnf install tito.noarch 
[root@desk mythcat]# systemctl daemon-reload 
Let's see the arguments of this tool:
[mythcat@desk django]$ tito
Usage: tito MODULENAME --help
Supported modules:
   build    - Build packages.
   init     - Initialize directory for use by tito.
   release  - Build and release to yum repos
   report   - Display various reports on the repo.
   tag      - Tag package releases.
Before you use this tool you need to have these folders into your project folder:
Let's try to use it with my old django project in the directory with the git checkout of your project.
[mythcat@desk projects]$ cd django/
[mythcat@desk django]$ tito init
Creating tito metadata in: /home/mythcat/projects/django/.tito
   - created /home/mythcat/projects/django/.tito
   - wrote tito.props
   - created /home/mythcat/projects/django/.tito/packages
   - wrote /home/mythcat/projects/django/.tito/packages/.readme
   - committed to git
This creates a .tito folder.
Now I can create my .spec file named django_project.spec:
%if 0%{?rhel} > 7 || 0%{?fedora}
%global use_python3 1
%global use_python2 0
%global ourpythonbin %{__python3}
%global our_sitelib %{python3_sitelib}
%global use_python3 0
%global use_python2 1
%if 0%{?__python2:1}
%global ourpythonbin %{__python2}
%global our_sitelib %{python2_sitelib}
%global ourpythonbin %{__python}
%global our_sitelib %{our_sitelib}
%{!?our_sitelib: %define our_sitelib %(%{ourpythonbin} -c "from distutils.sysconfig 
import get_python_lib; print get_python_lib()")}

Name: django_chart
Version: 0.0.2
Release: 1%{?dist}
Summary: A tool for managing rpm based git projects

License: GPLv2

BuildArch: noarch
%if %{use_python3}
BuildRequires: python3-devel
BuildRequires: python3-setuptools
Requires: python3-setuptools
Requires: python3-bugzilla
Requires: python3-blessings
Requires: rpm-python3
BuildRequires: python2-devel
BuildRequires: python-setuptools
Requires: python-setuptools
Requires: python-bugzilla
Requires: python-blessings
Requires: rpm-python
BuildRequires: asciidoc
BuildRequires: docbook-style-xsl
BuildRequires: libxslt
BuildRequires: rpmdevtools
BuildRequires: rpm-build
BuildRequires: tar
BuildRequires: which

%if 0%{?fedora}
# todo: add %%check to spec file in accordance with
BuildRequires: git
BuildRequires: python-bugzilla
BuildRequires: python3-devel
BuildRequires: python3-setuptools
BuildRequires: python3-bugzilla
BuildRequires: rpm-python3

Requires: rpm-build
Requires: rpmlint
Requires: fedpkg
Requires: fedora-packager
Requires: rpmdevtools
# Cheetah used not to exist for Python 3, but it's what Mead uses.  We
# install it and call via the command line instead of importing the
# previously potentially incompatible code, as we have not yet got
# around to changing this
Requires: /usr/bin/cheetah

django_chart is a project for managing chart with django 

# the weird directory name is because github makes the directory name
# '(projectname)-(tag)', and the tags for django_chart have 'django_chart' in them and
# '-1' on the end...
%setup -q -n django_chart-django_chart-%{version}-1
sed -i 1"s|#!.*|#!%{ourpythonbin}|" bin/django_chart

%{ourpythonbin} build
# convert manages
a2x -d manpage -f manpage django_chartrc.5.asciidoc
a2x -d manpage -f manpage django_chart.8.asciidoc
a2x -d manpage -f manpage django_chart.props.5.asciidoc
a2x -d manpage -f manpage releasers.conf.5.asciidoc

%{ourpythonbin} install -O1 --skip-build --root $RPM_BUILD_ROOT
rm -f $RPM_BUILD_ROOT%{our_sitelib}/*egg-info/requires.txt
# manpages
%{__mkdir_p} %{buildroot}%{_mandir}/man5
%{__mkdir_p} %{buildroot}%{_mandir}/man8
cp -a django_chartrc.5 django_chart.props.5 releasers.conf.5 %{buildroot}/%{_mandir}/man5/
cp -a django_chart.8 %{buildroot}/%{_mandir}/man8/
# bash completion facilities
install -Dp -m 0644 share/ %{buildroot}%{_datadir}/bash-completion/completions/

%doc doc/*
%doc %{_mandir}/man5/django_chartrc.5*
%doc %{_mandir}/man5/django_chart.props.5*
%doc %{_mandir}/man5/releasers.conf.5*
%doc %{_mandir}/man8/django_chart.8*
%dir %{our_sitelib}/django_chart

* Fri Dec 20 2019 catafest  0.0.2-1
- new package built with tito

* Fri Dec 20 2019 Catalin George Festila  0.6.12-1
If your git checkout has multiple projects/packages go to that directory from which you are creating tar.gz otherwise stay in your git root.
[mythcat@desk django]$ tito tag --debug
Creating output directory: /tmp/tito
Importing tito.tagger.VersionTagger
Using tagger class: 
Looking for .spec in /home/mythcat/projects/django
Using file: django_project.spec
Looking for .spec in /home/mythcat/projects/django
Using file: django_project.spec
Command: rpm --eval '%scl'
Status code: 0
Command output: %scl

Command: rpm -q --qf '%{name}
'  --eval '%undefine scl' --specfile /home/mythcat/projects/django/django_project.spec 2> /dev/null | 
grep -e '^$' -v | head -1
Status code: 0
Command output: django_chart

Command: git config --get
Status code: 0
Command output: catafest

Command: git config --get
Status code: 0
Command output:

Getting latest package info from: /home/mythcat/projects/django/.tito/packages/django_chart
Getting latest package info from: /home/mythcat/projects/django/.tito/packages/django_chart
Command: rpm -q --qf '%{version}-%{release}
' --define "_sourcedir /home/mythcat/projects/django" --define 'dist %undefined' --specfile 
/home/mythcat/projects/django/django_project.spec 2> /dev/null | grep -e '^$' -v | head -1
Status code: 0
Command output: 0.0.2-1

Tagging new version of django_chart: untagged -> 0.0.2-1
Cargo.toml file not found, this is probably not a Rust project
No destination version file found, skipping.
Command: git add /home/mythcat/projects/django/.tito/packages/django_chart
Status code: 0
Command output: 

Command: git add /home/mythcat/projects/django/django_project.spec
Status code: 0
Command output: 

Command: git commit -m 'Automatic commit of package [django_chart] release [0.0.2-1].' -m 
'Created by command:' -m '/usr/bin/tito tag --debug'
Status code: 0
Command output: [master 3b2d812] Automatic commit of package [django_chart] release [0.0.2-1].
 2 files changed, 126 insertions(+)
 create mode 100644 .tito/packages/django_chart
 create mode 100644 django_project.spec

Command: git tag -m "Tagging package [django_chart] version [django_chart-0.0.2-1] in directory 
[./]." django_chart-0.0.2-1
Status code: 0
Command output: 

Created tag: django_chart-0.0.2-1
   View: git show HEAD
   Undo: tito tag -u
   Push: git push --follow-tags origin
Use the git tool for push:
git push && git push origin some-tag-1.0
If you do not want to push it to a remote repository, you must add to the following commands option --offline.
[mythcat@desk django]$ tito build --tgz [--offline]
[mythcat@desk django]$ tito build --srpm [--offline]
[mythcat@desk django]$ tito build --rpm [--offline]
This last command execute all previous steps in one and call rpmbuild on that SRPM file which will produce binary rpm package.

Monday, December 9, 2019

Fedora 31 : Can be better? part 003.

Yes! The Fedora distro Linux can be better.
One bad problem for most Fedora users is video drivers.
I have an old NVIDIA graphic card: NVIDIA Corporation GT218 [GeForce 210] (rev a2).
This worked well with the nouveau device driver.
It will be great if the detection and install of the video graphic card will start from the installation process.
Another option is to have a dedicated opensource software for detection and installation of the video card.

Saturday, December 7, 2019

Fedora 31 : Uploading a repo with Fedora.

This is a simple way to upload to the GitHub website your source code.
First, you need to create your repo on your GitHub account using New button from Your repositories on account area.
Fill with the name of your GitHub project and see the link to your project.
In my case, I used the named project django_chart and the link is
In your local folder project from Fedora distro use this commands:
(env) [mythcat@desk django]$ git init
(env) [mythcat@desk django]$ git add .
(env) [mythcat@desk django]$ git commit -m "First Commit"
(env) [mythcat@desk django]$ git remote add origin
(env) [mythcat@desk django]$ git push -f origin master 
Username for '': catafest
Password for '': 
Enumerating objects: 8730, done.
Counting objects: 100% (8730/8730), done.
Delta compression using up to 2 threads
Compressing objects: 100% (5056/5056), done.
Writing objects: 100% (8730/8730), 14.12 MiB | 744.00 KiB/s, done.
Total 8730 (delta 2597), reused 8730 (delta 2597)
remote: Resolving deltas: 100% (2597/2597), done.
 + b2c0e70...0746fa8 master -> master (forced update)
This last output tells me the files are on GitHub repo project.

Wednesday, December 4, 2019

Fedora 31 : Lutris the Open Source gaming platform for Linux.

Lutris is an Open Source gaming platform for Linux. It installs and launches games so you can start playing without the hassle of setting up your games. Get your games from GOG, Steam,, Origin, Uplay and many other sources running on any Linux powered gaming machine.
You need to create an account and you can run many games on Linux and multiple platforms, see the official website with games.
The installation process is simple to do on Fedora 31 with DNF tool:
[root@desk mythcat]# sudo dnf install lutris
Last metadata expiration check: 0:06:35 ago on Wed 04 Dec 2019 07:15:23 PM EET.
Dependencies resolved.
 Package                    Arch       Version                      Repository   Size
 lutris                     x86_64     0.5.3-1.fc31                 fedora      2.0 M
Total download size: 129 M
Installed size: 708 M
Is this ok [y/N]: y
  llvm-libs-9.0.0-1.fc31.i686           ncurses-libs-6.1-12.20190803.fc31.i686       
  python3-evdev-1.1.2-4.fc31.x86_64     unixODBC-2.3.7-5.fc31.x86_64