Fedora 31 : Can be better? part 004.

The common question of any Fedora Linux user: Can be better?.
Yes, we can fix some common errors...
This is a common error generated by the GTK on Fedora distro applications:

[mythcat@desk bin]$ ./studio.sh 

(java:12631): Gtk-WARNING **: 11:45:47.061: Unable to locate theme engine in module_path: "murrine",

(java:12631): Gtk-WARNING **: 11:45:47.061: Unable to locate theme engine in module_path: "murrine",

(java:12631): Gtk-WARNING **: 11:45:47.106: Unable to locate theme engine in module_path: "murrine",
...

First, find the running GUI environment from the terminal:

[mythcat@desk ~]$ echo $XDG_CURRENT_DESKTOP
X-Cinnamon

This allows us to know that the issue may be a GTK theme package.

[root@desk bin]# dnf install gtk-murrine-engine.x86_64
Last metadata expiration check: 0:45:00 ago on Mon 06 Jan 2020 11:14:27 AM EET.
Dependencies resolved.
...
Installed:
  gtk-murrine-engine-0.98.2-17.fc31.x86_64                                      

Complete!

Now the Android Studio works well without warning errors:

[mythcat@desk bin]$ ./studio.sh 
Jan 06, 2020 12:00:51 PM java.util.prefs.FileSystemPreferences$1 run
INFO: Created user preferences directory.
...

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 https://dl.google.com/linux/direct/google-chrome-stable_current_x86_64.rpm
[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
====================================================================================
Installing:
 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
...
Installed:
  google-chrome-stable-79.0.3945.88-1.x86_64                                        
  liberation-fonts-1:2.00.5-6.fc31.noarch                                           

Complete!

You can start it with this commands:

[mythcat@desk ~]$ google-chrome
google-chrome         google-chrome-stable 

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 
...
Complete!
[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:

docs/
mypackage.spec
README
.tito/
src/
test/

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
Done!

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}
%else
%global use_python3 0
%global use_python2 1
%if 0%{?__python2:1}
%global ourpythonbin %{__python2}
%global our_sitelib %{python2_sitelib}
%else
%global ourpythonbin %{__python}
%global our_sitelib %{our_sitelib}
%endif
%endif
%{!?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
URL: https://github.com/catafest/django_chart
Source0: https://github.com/catafest/django_chart/archive/django_chart-%{version}-1.tar.gz

BuildArch: noarch
%if %{use_python3}
BuildRequires: python3-devel
BuildRequires: python3-setuptools
Requires: python3-setuptools
Requires: python3-bugzilla
Requires: python3-blessings
Requires: rpm-python3
%else
BuildRequires: python2-devel
BuildRequires: python-setuptools
Requires: python-setuptools
Requires: python-bugzilla
Requires: python-blessings
Requires: rpm-python
%endif
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
# https://fedoraproject.org/wiki/QA/Testing_in_check
BuildRequires: git
BuildRequires: python-bugzilla
BuildRequires: python3-devel
BuildRequires: python3-setuptools
BuildRequires: python3-bugzilla
BuildRequires: rpm-python3
%endif

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

%description
django_chart is a project for managing chart with django 
git.

%prep
# 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

%build
%{ourpythonbin} setup.py 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

%install
rm -rf $RPM_BUILD_ROOT
%{ourpythonbin} setup.py 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/django_chart_completion.sh %{buildroot}%{_datadir}/bash-completion/completions/
django_chart


%files
%doc AUTHORS COPYING
%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*
%{_bindir}/django_chart
%{_bindir}/generate-patches.pl
%{_datadir}/bash-completion/completions/django_chart
%dir %{our_sitelib}/django_chart
%{our_sitelib}/django_chart/*
%{our_sitelib}/django_chart-*.egg-info


%changelog
* 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 user.name
Status code: 0
Command output: catafest

Command: git config --get user.email
Status code: 0
Command output: catalinfest@gmail.com

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.

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.

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 https://github.com/catafest/django_chart.git.
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 https://github.com/catafest/django_chart.git
(env) [mythcat@desk django]$ git push -f origin master 
Username for 'https://github.com': catafest
Password for 'https://catafest@github.com': 
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.
To https://github.com/catafest/django_chart.git
 + b2c0e70...0746fa8 master -> master (forced update)

This last output tells me the files are on GitHub repo project.

Fedora 31 : Can be better? part 002.

If you want to have a USB device with the Fedora distro then the Fedora team comes with this solution, see the webpage.
Now let's make all easier for this issue. Detect your USB device...

[mythcat@desk ~]$ lsblk 
NAME            MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
...
sdb               8:16   1   984M  0 disk 
└─sdb1            8:17   1   983M  0 part 

Be sure the USB drive has bootable flag enable:

[mythcat@desk Downloads]$ sudo fdisk /dev/sdb

Welcome to fdisk (util-linux 2.34).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.


Command (m for help): a
Selected partition 1
The bootable flag on partition 1 is disabled now.

Command (m for help): a   
Selected partition 1
The bootable flag on partition 1 is enabled now.

Command (m for help): q

Umount your USB drive, do not remove it.

[mythcat@desk ~]$ sudo umount /dev/sdb

Copy the Fedora file image iso to the USB device with the dd command:

[mythcat@desk ~]$ sudo dd if=Fedora-Server-netinst-x86_64-31-1.9.iso of=/dev/sdb 
1331200+0 records in
1331200+0 records out
681574400 bytes (682 MB, 650 MiB) copied, 383.766 s, 1.8 MB/s

You can test it with the qemu tool:

[mythcat@desk ~]$ sudo qemu-system-x86_64 -hda /dev/sdb

Fedora 31 : Can be better? part 001.

I started using Fedora distribution several years ago after I tried several distros (Suse, RedHat 6, Debian, Gentoo and many more).
I was pleased with the test and speed.
I must admit that from the first used version 9 (Sulfur) and until now it is very changed and unknown for many users
That's why I decided to present in this series of mini-tutorials called Can be better? various lesser-known aspects that underlie it and its more precise use.
I will not abide by a predetermined order in the use of Fedora distribution.
I will only point to useful information for any Fedora user.

---

Let's start the first part of this tutorial named Can be better? part 001. with a brief introduction to the Wikipedia page and the official one.
An interesting aspect of Fedora configuration is the file sysctl.conf.
You can read the manual page with this command:

man 8 sysctl

Part of this file should contain these lines:

vm.overcommit_memory=2
vm.overcommit_ratio=100
kernel.exec-shield=1

This parameter named vm.overcommit_memory can be set this way:

0: heuristic overcommit (this is the default)
1: always overcommit, never check
2: always check, never overcommit

For this parameter named vm.overcommit_ratio any value to anything less than 100 is almost always incorrect.
The last parameter named kernel.exec-shield fix NX protection also called Data Execution Prevention (DEP), to prevent buffer stacks from taking down your machine.
You can check this with:

[root@desk mythcat]# grep nx /proc/cpuinfo 

Fedora 30 : Introduction to Qt Designer.

Qt Designer is the Qt tool for designing and building graphical user interfaces (GUIs) with Qt Widgets... see the Qt Designer manual webpage.

[root@desk mythcat]# dnf install qt5-designer.x86_64
...
Installed:
  qt5-designer-5.12.5-1.fc30.x86_64                                             
  qt5-qttools-libs-designercomponents-5.12.5-1.fc30.x86_64                      

Complete!

Let's start this tool with this command:

[mythcat@desk ~]$ designer-qt5 

Follow this video tutorial from my youtube channel:

You can preview your work with Ctrl+R keys.
After you finish with the project then save the file with this name: mytest.ui.
The next command to create your working python file named mytest.py.
Use this command with the -x option creates the main section to the my.py file that will allow us to test quickly whether the GUI looks as we intended.

[mythcat@desk ~]$ pyuic5 -x  mytest.ui -o mytest.py

Now you can run it to see the output:

[mythcat@desk ~]$ python3  mytest.py

Fedora 30 : About Simple Screen Recorder tool.

The Simple Screen Recorder tool can be easily installed on Fedora 30 and provide a GUI interface for recording screen with audio input. Use the dnf tool to install it:

[root@desk mythcat]# dnf install simplescreenrecorder.x86_64
...
Installed:
  simplescreenrecorder-0.3.11-7.fc30.x86_64                                   

Complete!

I used the LXDE Desktop Environment, see the command to identify the running desktop environment:

[mythcat@desk ~]$ echo $XDG_CURRENT_DESKTOP
LXDE

The tool can be found on Fedora main menu: Sound & Video, see the screenshot:

The tool start with this windows screen, you need to press the Continue button:

The next steps comes with configuration area for your video recorder.
I set and save my new Input profile to record an screen area.
You can use a rectangle, change the size from left to right or select the window to define the area for record video.
I change the Audio input to use my microphone.

The next step let you to set the file , video and audio settings for output. I let all with default settings.
The last step let you to see informations , preview and set the hotkeys.
I can use keyboard to start and stop recorder.

Fedora 30 : A general purpose 3D CAD modeler.

I don't use the Computer-aided design (CAD) solutions but today I tested a good one with Fedora 30.
The FreeCAD application is an open source option product design.
This is available on Linux, Windows, Mac OS X+.
The full list with all features can be found at this wiki page.

[root@desk mythcat]# dnf search freecad
Last metadata expiration check: 0:14:20 ago on Sb 07 sep 2019 21:54:39 +0300.
======================== Name Exactly Matched: freecad =========================
freecad.x86_64 : A general purpose 3D CAD modeler
======================= Name & Summary Matched: freecad ========================
freecad-data.noarch : Data files for FreeCAD
[root@desk mythcat]# dnf install freecad.x86_64
Last metadata expiration check: 0:19:37 ago on Sb 07 sep 2019 21:54:39 +0300.
Dependencies resolved.
================================================================================
 Package               Arch   Version                             Repo     Size
================================================================================
Installing:
 freecad               x86_64 1:0.18.3-1.fc30                     updates  38 M
...

Complete!
[root@desk mythcat]# exit 
exit
[mythcat@desk ~]$ FreeCAD
FreeCAD 0.18, Libs: 0.18RUnknown
© Juergen Riegel, Werner Mayer, Yorik van Havre 2001-2019
  #####                 ####  ###   ####  
  #                    #      # #   #   # 
  #     ##  #### ####  #     #   #  #   # 
  ####  # # #  # #  #  #     #####  #   # 
  #     #   #### ####  #    #     # #   # 
  #     #   #    #     #    #     # #   #  ##  ##  ##
  #     #   #### ####   ### #     # ####   ##  ##  ## 

It seems to work very well.

Fedora 30 : Rollback to Fedora 30.

In this tutorial, I will show you how to rollback from a bad distro update of Fedora 31 to the old one Fedora 30.
If you follow this tutorial and you got errors then your dnf tool will have problems with update process.
After I follow the tutorial I got many packages and errors.
I try to fix with this but not work:

[root@desk mythcat]# dnf system-upgrade download --refresh --releasever=31
--setopt=module_platform_id=platform:f31 --skip-broken
Before you continue to ensure that your system is fully upgraded by running "dnf
--refresh upgrade". Do you want to continue [y/N]: y
...

Because the Fedora 31 is not available I need to roll back to my old Fedora 30. This are steps I used to fix this issue:

[root@desk mythcat]# pkcon refresh force -c -1
[root@desk mythcat]# dnf --releasever=30 --allowerasing downgrade fedora
[root@desk mythcat]# dnf clean all --releasever=32
[root@desk mythcat]# dnf clean all --releasever=31
[root@desk mythcat]# dnf clean all --releasever=30

The pkcon tool refresh the cached information about available updates and set the maximum acceptable age for cached metadata, in seconds.
The option of dnf tool clean all --releasever=32 will clean all packages from fc32.
I used this command to see what packages with errors and the repo with problems:

[root@desk mythcat]# dnf --releasever=30 --allowerasing downgrade fedora
...

The result was rawhide repo and I remove it:

[root@desk mythcat]# ls -l /etc/yum.repos.d/
[root@desk mythcat]# rm /etc/yum.repos.d/fedora-rawhide.repo 
[root@desk mythcat]# rm /etc/yum.repos.d/fedora-rawhide-modular.repo 

After that I reboot my distro and I used dnfdragora with my repos to test it.

Fedora 30 : Application packages with snap tool.

Snaps are application packages for desktop, cloud, and IoT that are easy to install, secure, cross-platform and dependency-free, see here.
The install of this tool with the dnf install tool is simple:

[root@desk snap]# dnf install snap
...
Installed:
  snap-0.6-13.fc29.noarch          python2-crypto-2.6.1-25.fc30.x86_64         
Complete!

Let's make the settings for this tool:

[mythcat@desk snap]$ sudo ln -s /var/lib/snapd/snap /snap
[mythcat@desk snap]$ snap install snapcraft --classic
snapcraft 3.5 from Canonical✓ installed

[mythcat@desk ~]$ snap help
The snap command lets you install, configure, refresh and remove snaps.
Snaps are packages that work across many different Linux distributions,
enabling secure delivery and operation of the latest apps and utilities.

Usage: snap  [...]

Commands can be classified as follows:

         Basics: find, info, install, list, remove
        ...more: refresh, revert, switch, disable, enable
        History: changes, tasks, abort, watch
        Daemons: services, start, stop, restart, logs
       Commands: alias, aliases, unalias, prefer
  Configuration: get, set, wait
        Account: login, logout, whoami
    Permissions: connections, interfaces, interface, connect, disconnect
      Snapshots: saved, save, check-snapshot, restore, forget
          Other: version, warnings, okay, ack, known
    Development: run, pack, try, download, prepare-image

For more information about a command, run 'snap help '.
For a short summary of all commands, run 'snap help --all'.
[mythcat@desk ~]$ snap refresh
All snaps up to date.  

Now we can install an application and run it.
Let's try with the vlc application:

[mythcat@desk ~]$ snap install vlc
vlc 3.0.6 from VideoLAN✓ installed
[mythcat@desk ~]$ snap run  vlc
VLC media player 3.0.6 Vetinari (revision 3.0.6-0-g5803e85)
[00000000019ca3d0] main libvlc: Running vlc with the default interface. Use 'cvlc' to use vlc without interface.
Qt: Session management error: None of the authentication protocols specified are supported
[0000000001a5fae0] main playlist: playlist is empty
QObject::~QObject: Timers cannot be stopped from another thread

Not all application will run on Fedora 30.
For example, I try with the qalculate application and not work:

[mythcat@desk ~]$ sudo snap install qalculate
[sudo] password for mythcat: 
snap "qalculate" is already installed, see 'snap help refresh'

When I try to run it the error was the qalculate application cannot be found.

Fedora 30 : Kite now works with Linux.

The development team comes with these new features for this Linux tool named Kite:
Code Faster in Python with Line-of-Code Completions Kite integrates with your IDE and uses machine learning to give you useful code completions for Python. Start coding faster today.
This tool integrates with all the top Python IDEs - Atom, Pycharm, Sublime, VS Code and Vim.
The install process is simple:

[mythcat@desk ~]$ bash -c "$(wget -q -O - https://linux.kite.com/dls/linux/current)"

This script will install Kite!

We hope you enjoy! If you run into any issues, please reach out at support@kite.com or feedback@kite.com

- The Kite Team

Press enter to continue...
Downloading kite-installer binary using wget...
Checking to see if all dependencies are installed....

Kite watches your workspace to be notified when python files change on disk. This allows us to
provide the latest information & completions from your coding environment. However, for larger
workspaces, Kite can exceed the default limits on inotify watches, which can result in a degraded experience. 

We can fix this by placing a file in /etc/sysctl.d/ to increase this limit.
Configure inotify now? (you might be asked for your sudo password) [Y/n] Y
Creating /etc/sysctl.d/30-kite.conf...
[sudo] password for mythcat: 
Running ./kite-installer install
[installer] no previous kite installation found
[installer] latest version is 2.20190503.3, downloading now...
[installer] verifying checksum
[installer] validating signature
[installer] installing version 2.20190503.3
[installer] installed ~/.config/autostart/kite-autostart.desktop
[installer] installed ~/.config/systemd/user/kite-updater.service
[installer] installed ~/.config/systemd/user/kite-updater.timer
[installer] installed ~/.local/share/applications/kite-copilot.desktop
[installer] installed ~/.local/share/applications/kite.desktop
[installer] installed ~/.local/share/icons/hicolor/128x128/apps/kite.png
[installer] installed ~/.local/share/kite/kited
[installer] installed ~/.local/share/kite/uninstall
[installer] installed ~/.local/share/kite/update
[installer] activating kite-updater systemd service
[installer] registering kite:// protocol handler
[installer] kite is installed! launching now! happy coding! :)
Removing kite-installer 

After install you need to use your email to login into Kite account.
The last step is the integrations, and Kite will install this plugin for you. If you use the vim editor, then is a good idea to take a look here.

Fedora 29 : About poedit tool.

In this tutorial I will briefly introduce the linux poedit tool.
Let's start installing it in Fedora 29.

[root@desk mythcat]# dnf search poedit 
Last metadata expiration check: 0:01:09 ago on Mon 29 Apr 2019 01:23:39 PM EEST.
========================= Name Exactly Matched: poedit =========================
poedit.x86_64 : GUI editor for GNU gettext .po files
[root@desk mythcat]# dnf install poedit 
Last metadata expiration check: 0:02:40 ago on Mon 29 Apr 2019 01:23:39 PM EEST.
Dependencies resolved.
...
Complete!

About this software named Poedit (formerly poEdit) shareware and cross-platform gettext catalog editor to aid in the process of language localization.
Poedit is a powerful and intuitive editor for translating interfaces that use gettext.
Available for Windows, macOS, and Linux.
What is a PO file?
The .PO file is a portable object file, which is text-based. These types of files are used in common in software development. The .PO file may be referenced by Java programs, GNU gettext, or other software programs as a properties file.
What is MO file?
The .MO files or Machine Object is a binary data file that contains object data referenced by a program.
It is typically used to translate program code and may be loaded or imported into the GNU gettext program.

These files can be provided by developer source code or you can sign in into the Crowdin.
This provides powerful tools to manage localization for projects of any type and any size.
Open the application and put all info on from File-> Preferences.
The Poedit asks some of the essential information such as your name, email address, translation memory settings, and more to change your preferences.
Set the path (absolute path) settings in your Catalog otherwise, the Poedit isn't able to use gettext from source files.
Before starting your translate issue be advice with the rules are set by GNU gettext utilities

Fedora 29 : Install Inkscape with Flatpak Linux tool.

Today I used the Flatpak Linux tool to install the last version of Inkscape 0.92.4 5da689c313 released at 2019-01-14.
Flatpak (formerly xdg-app) is a software utility for software deployment, package management, and application virtualization for Linux desktop computers. It provides a sandbox environment in which users can run applications in isolation from the rest of the system. see Wikipedia Flatpak.
The Flatpak tool is installed by default on Fedora Workstation. To install and runt the last version of Inkscape you need to use these commands:

[mythcat@desk Downloads]$ flatpak install org.inkscape.Inkscape.flatpakref

org.inkscape.Inkscape permissions:
    ipc     x11    file access [1]

    [1] host


        ID                                    Arch   Branch Remote  Download
 1. [✓] org.gnome.Platform.Locale             x86_64 3.30   flathub 17.4 kB / 320.2 MB
 2. [✓] org.freedesktop.Platform.VAAPI.Intel  x86_64 18.08  flathub  1.8 MB / 1.8 MB
 3. [✓] org.freedesktop.Platform.html5-codecs x86_64 18.08  flathub  4.8 MB / 4.9 MB
 4. [✓] org.inkscape.Inkscape                 x86_64 stable flathub 86.1 MB / 88.6 MB
 5. [✓] org.inkscape.Inkscape.Locale          x86_64 stable flathub  8.5 kB / 18.6 MB

Installation complete.

[mythcat@desk Downloads]$ flatpak run org.inkscape.Inkscape
Gtk-Message: 22:58:01.259: Failed to load module "pk-gtk-module"
Gtk-Message: 22:58:01.259: Failed to load module "canberra-gtk-module"

The Inkscape drawing tool works well.

Fedora 29 : The AppImage tool and Krita Next.

The AppImage is a universal software package format.
The process of packaging the software in AppImage is a storage file provide by the developer.
This file is a compressed image with all the dependencies and libraries needed to run the desired software. The AppImage doesn’t really install the software just execute it without no extraction and no installation.
The most common features:

• Can run on various different Linux distributions;
• No need of installing and compiling software;
• No need of root permission and the system files are not touched;
• Can be run anywhere including live disks;
• Applications are in read only mode;
• Software are removed just by just deleting the AppImage file;
• Applications packaged in AppImage are not sandboxed by default.

More about this can be read at official webpage.
I tested the Krita Next with this tool.
The appimage file of Krita Next can be found here.
About the Krita Next this is a daily builds that contain new features, but could be unstable.
After I download the file I change it to executable with:

[mythcat@desk Downloads]$ chmod +x krita-4.2.0-pre-alpha-95773b5-x86_64.appimage 
[mythcat@desk Downloads]$ ./krita-4.2.0-pre-alpha-95773b5-x86_64.appimage

Fedora 29 : The figlet linux tool.

About this Linux tool you can read at figlet manual :
FIGlet prints its input using large characters (called ``FIGcharac- ters'')made up of ordinary screen characters (called ``sub-charac- ters''). FIGlet output is generally reminiscent of the sort of ``sig- natures'' many people like to put at the end of e-mail and UseNet mes- sages. It is also reminiscent of the output of some banner programs, although it is oriented normally, not sideways. 
...
Let's see some examples:

[root@desk mythcat]# dnf install figlet
Last metadata expiration check: 1:05:53 ago on Mon 07 Jan 2019 06:52:19 PM EET.
Dependencies resolved.

[mythcat@desk ~]$ figlet --h
figlet: invalid option -- '-'
Usage: figlet [ -cklnoprstvxDELNRSWX ] [ -d fontdirectory ]
              [ -f fontfile ] [ -m smushmode ] [ -w outputwidth ]
              [ -C controlfile ] [ -I infocode ] [ message ]

                  

[mythcat@desk ~]$ figlet -v 
FIGlet Copyright (C) 1991-2012 Glenn Chappell, Ian Chai, John Cowan,
Christiaan Keet and Claudio Matsuoka
Internet:  Version: 2.2.5, date: 31 May 2012

FIGlet, along with the various FIGlet fonts and documentation, may be
freely copied and distributed.

If you use FIGlet, please send an e-mail message to .

The latest version of FIGlet is available from the web site,
    http://www.figlet.org/

Usage: figlet [ -cklnoprstvxDELNRSWX ] [ -d fontdirectory ]
              [ -f fontfile ] [ -m smushmode ] [ -w outputwidth ]
              [ -C controlfile ] [ -I infocode ] [ message ]

The messages can be set and show on output like a print similar to an ASCII banner.
The arguments of this tool set to the left, center and right or change size and font:
The simple one can be this:

[mythcat@desk ~]$ figlet 2019

Fedora 28 : Testing Blender 2.80 .

I tested the new Blender 2.80 alpha 2 version and is working well.
You can start to download it from the official download page.
The next step: unarchive the tar.bz file and run the blender from the newly created folder.
I try to create a package but seems the tool not working with the .spec file.
This is a screenshot with this Blender 3D software running in my Fedora 28.

Fedora 28 : LibreOffice remote connection.

I wrote a tutorial about the remote connection in LibreOffice, see this article.
The main problem with LibreOffice development is the changes.
Now the feature Open remote is not working.
The bug is officially recognized and represented, see the page.
They inform us, see comment 31:
John R Mead 2017-12-17 22:43:03 UTC Well, it still doesn't work with LibreOffice Version: 6.0.0.0.beta1 (x64); I'm not providing screenshots this time since it's identical in everyway to my previous attempts. At the end of all the copy/pasting between LibreOffice and my browser to get all the relevant permissions, when I finally make the attempt to connect, I get the same message: The specified device is invalid. 

Current system configuration of potentially relevant software: 

Windows 10 Professional (x64) Version 1709 (build 16299.125) 
Java 9.0.1 
Microsoft - OneDrive version 17.25.1.0 (x64) 
LibreOffice Version: 6.0.0.0.beta1 (x64)

It's a common practice to see open-source software with bugs, most bugs are already available to users to avoid problems.
Most backup bugs are authentication and changes in development.

Fedora 28 : Unusual arguments for the dnf command.

Today I will introduce you in this tutorial some more unusual arguments for the dnf command.

• first is check which package provides that file;

[root@desk mythcat]# dnf provides /etc/httpd/conf/httpd.conf
Last metadata expiration check: 0:23:46 ago on Wed 01 Aug 2018 09:31:44 AM EEST.
httpd-2.4.34-3.fc28.x86_64 : Apache HTTP Server
Repo        : @System
Matched from:
Filename    : /etc/httpd/conf/httpd.conf

httpd-2.4.34-3.fc28.x86_64 : Apache HTTP Server
Repo        : updates
Matched from:
Filename    : /etc/httpd/conf/httpd.conf

httpd-2.4.33-2.fc28.x86_64 : Apache HTTP Server
Repo        : fedora
Matched from:
Filename    : /etc/httpd/conf/httpd.conf

• get detailed information of a package can be viewed with the ‘info’ argument;

[root@desk mythcat]# dnf info httpd
Last metadata expiration check: 0:29:01 ago on Wed 01 Aug 2018 09:31:44 AM EEST.
Installed Packages
Name         : httpd
Version      : 2.4.34
Release      : 3.fc28
Arch         : x86_64
Size         : 4.2 M
Source       : httpd-2.4.34-3.fc28.src.rpm
Repo         : @System
From repo    : updates
Summary      : Apache HTTP Server
URL          : https://httpd.apache.org/
License      : ASL 2.0
Description  : The Apache HTTP Server is a powerful, efficient, and extensible
             : web server.

• allows us to see what has happened to our Linux system over time, and even undo, redo, or roll back a transaction;

[root@desk mythcat]# dnf history
ID     | Command line             | Date and time    | Action(s)      | Altered
-------------------------------------------------------------------------------
   178 | upgrade                  | 2018-08-01 09:33 | Update         |   27   
   177 | upgrade                  | 2018-07-31 12:54 | Update         |   11   
   176 | upgrade                  | 2018-07-30 20:43 | Update         |    1

• take actions will be quicker with the ‘makecache’ argument

[root@desk mythcat]# time dnf makecache
Last metadata expiration check: 0:34:10 ago on Wed 01 Aug 2018 09:31:44 AM EEST.
Metadata cache created.

real    0m4.529s
user    0m1.420s
sys    0m0.229s

• list all packages that are currently installed on your Linux system;

[root@desk mythcat]# dnf list installed
Installed Packages
CharLS.x86_64                          1.0-16.fc28              @System         
Field3D.x86_64                         1.7.2-10.fc28            @System         
GConf2.x86_64                          3.2.6-20.fc28            @updates-testing
GeoIP.x86_64                           1.6.12-3.fc28            @fedora         
GeoIP-GeoLite-data.noarch              2018.06-1.fc28           @updates        
ImageMagick.x86_64                     1:6.9.9.38-1.fc28        @updates-testing
ImageMagick-c++.x86_64                 1:6.9.9.38-1.fc28        @updates-testing
ImageMagick-libs.x86_64                1:6.9.9.38-1.fc28        @updates-testing
LibRaw.x86_64                          0.18.13-1.fc28           @updates        
ModemManager.x86_64                    1.6.12-3.fc28            @fedora