Fedora 33 : Build and publish with .NET Core SDK .

In this tutorial I will show you how can use .NET Core SDK to build and run a simple MyGame001 application from the last tutorial.
Let's go to the project and get some infos:

[mythcat@desk ~]$ cd CSharpProjects/
[mythcat@desk CSharpProjects]$ cd MyGame001/
[mythcat@desk MyGame001]$ dotnet --info
.NET Core SDK (reflecting any global.json):
 Version:   3.1.109
 Commit:    32ced2d411

Runtime Environment:
 OS Name:     fedora
 OS Version:  33
 OS Platform: Linux
 RID:         fedora.33-x64
 Base Path:   /usr/lib64/dotnet/sdk/3.1.109/

Host (useful for support):
  Version: 3.1.9
  Commit:  774fc3d6a9

.NET Core SDKs installed:
  3.1.109 [/usr/lib64/dotnet/sdk]

.NET Core runtimes installed:
  Microsoft.AspNetCore.App 3.1.9 [/usr/lib64/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 3.1.9 [/usr/lib64/dotnet/shared/Microsoft.NETCore.App]

To install additional .NET Core runtimes or SDKs:
  https://aka.ms/dotnet-download

The next command will create MyGame001.dll.

[mythcat@desk MyGame001]$ dotnet publish --configuration Release --runtime fedora.33-x64 --self-contained false
Microsoft (R) Build Engine version 16.4.0+e901037fe for .NET Core
Copyright (C) Microsoft Corporation. All rights reserved.

  Restore completed in 50.58 ms for /home/mythcat/CSharpProjects/MyGame001/MyGame001.csproj.
  MyGame001 -> /home/mythcat/CSharpProjects/MyGame001/bin/Release/netcoreapp3.1/fedora.33-x64/MyGame001.dll
  MyGame001 -> /home/mythcat/CSharpProjects/MyGame001/bin/Release/netcoreapp3.1/fedora.33-x64/publish/

Now you can run it with dotnet command:

[mythcat@desk MyGame001]$ dotnet /home/mythcat/CSharpProjects/MyGame001/bin/Release/netcoreapp3.1/fedora.33-x64/MyGame001.dll

You can simply run it like an Linux application:

[mythcat@desk MyGame001]$ /home/mythcat/CSharpProjects/MyGame001/bin/Release/netcoreapp3.1/fedora.33-x64/publish/MyGame001 

Fedora 33 : Testing xdotool linux tool .

Xdotool is a free and open source command line tool for simulating mouse clicks and keystrokes.
You can create beautiful scrips and tools with this command.
The help for this command is this:

[mythcat@desk ~]$ xdotool -help

Let's see some examples:
This simulate a keystroke for key c:

m[mythcat@desk ~]$ xdotool key c
c[mythcat@desk ~]$ c

The next command will simulate a key press for key c:

[mythcat@desk ~]$ xdotool keydown c
c[mythcat@desk ~]$ cccccccccccccccccccccccccccccccccccccccccccccccccccc^C
[mythcat@desk ~]$ ^C

The next command will simulate a key release for key c:

[mythcat@desk ~]$ xdotool keyup c

Use the enter key:

[mythcat@desk ~]$ xdotool key KP_Enter

[mythcat@desk ~]$

The next command will open a new tab in terminal:

[mythcat@desk ~]$ xdotool key shift+ctrl+t

This command simulate a right click at current location of pointer

xdotool click 3

The reference is: 1 – Left click, 2 – Middle click, 3 – Right click, 4 – Scroll wheel up, 5 – Scroll wheel down.
The next command get ID of terminal window currently in focus and then minimize it:

[mythcat@desk ~]$ xdotool getactivewindow windowminimize

This command lists all open windows:

[mythcat@desk ~]$ xdotool search --name ""

I get the open window with name New Tab - Google Chrome, with this command:

[mythcat@desk ~]$ xdotool search --name "New Tab -"
18874375

This command get the pid of the active window:

[mythcat@desk ~]$ xdotool getactivewindow getwindowpid
3538

The pid is from lxterminal tool:

[mythcat@desk ~]$ ps aux | grep 3538
mythcat     3538  0.3  0.4 601468 42500 ?        Sl   11:42   0:05 lxterminal
mythcat     5713  0.0  0.0 221432   780 pts/1    S+   12:07   0:00 grep 3538

The active window can be move with:

[mythcat@desk ~]$ xdotool getactivewindow windowmove 0 0

The next command get the current mouse coordinates:

[mythcat@desk ~]$ xdotool getmouselocation --shell
X=521
Y=339
SCREEN=0
WINDOW=16780805

These coordinates can be parsed:

[mythcat@desk ~]$ xdotool getmouselocation 2>/dev/null | cut -d\  -f1,2 -
x:0 y:0
[mythcat@desk ~]$ xdotool getmouselocation 2>/dev/null | sed 's/ sc.*//; s/.://g; s/ /x/'
0x0

Open inkscape and select Layer for this window Always on top:

[mythcat@desk ~]$ inkscape 

Start xdotool with focus on mouse and click on rectangle and draw area and follow the output:

[mythcat@desk ~]$ xdotool search --name "inkscape" behave %@ focus getmouselocation
x:25 y:239 screen:0 window:16786173
x:25 y:239 screen:0 window:16786173
x:340 y:378 screen:0 window:16786173
x:340 y:378 screen:0 window:16786173
x:332 y:358 screen:0 window:16786173
x:332 y:358 screen:0 window:16786173
x:518 y:643 screen:0 window:16786173
x:518 y:643 screen:0 window:16786173
x:723 y:466 screen:0 window:16780805

I create a bash script named inkscape_xdotool.sh and I add these commands:

#! /bin/sh
sleep 1
inkscape > /dev/null 2>&1 &
sleep 3
my_app=xdotool search --sync --name 'inkscape'
xdotool windowactivate $my_app
xdotool mousemove 0 0
xdotool mousemove 25 239
xdotool click 1
xdotool mousemove 332 358 mousedown 1 mousemove 518 643
xdotool mouseup 1
sleep 1
exit

I run the script:

[mythcat@desk ~]$ ./inkscape_xdotool.sh 

The script run well.
The output is an rectangle in inkscape with the default black color.

Fedora 33 : Install and test with MonoGame .NET library .

MonoGame is a simple and powerful .NET library for creating games for desktop PCs, video game consoles, and mobile devices.
Today I tested with Fedora 33.
First let's install this templates for .NET Core CLI and the Rider IDE.:

[mythcat@desk ~]$ dotnet new --install MonoGame.Templates.CSharp

Welcome to .NET Core 3.1!
---------------------
SDK Version: 3.1.109

----------------
Explore documentation: https://aka.ms/dotnet-docs
Report issues and find source on GitHub: https://github.com/dotnet/core
Find out what's new: https://aka.ms/dotnet-whats-new
Learn about the installed HTTPS developer cert: https://aka.ms/aspnet-core-https
Use 'dotnet --help' to see available commands or visit: https://aka.ms/dotnet-cli-docs
Write your first app: https://aka.ms/first-net-core-app
--------------------------------------------------------------------------------------
Getting ready...
  Restore completed in 2.76 sec for /home/mythcat/.templateengine/dotnetcli/v3.1.109/scratch/restore.csproj.
...

Install MGCB Editor is a tool for editing .mgcb files:

[mythcat@desk ~]$ dotnet tool install --global dotnet-mgcb-editor
You can invoke the tool using the following command: mgcb-editor
Tool 'dotnet-mgcb-editor' (version '3.8.0.1641') was successfully installed.
[mythcat@desk ~]$ mgcb-editor --register
Installing icon...
Installation complete!
Installing mimetype...
gtk-update-icon-cache: No theme index file.
Installation complete!
Installing application...
Installation complete!

Registered MGCB Editor!

Install C# extension for code editor:

[mythcat@desk ~]$ code --install-extension ms-dotnettools.csharp
Installing extensions...
Extension 'ms-dotnettools.csharp' is already installed.

The next step is to create new MonoGame projects:

[mythcat@desk ~]$ cd CSharpProjects/
[mythcat@desk CSharpProjects]$ dotnet new mgdesktopgl -o MyGame001
The template "MonoGame Cross-Platform Desktop Application (OpenGL)" was created successfully.

An update for template pack MonoGame.Templates.CSharp::3.8.0.1641 is available.
    install command: dotnet new -i MonoGame.Templates.CSharp::3.8.0.1641 

I run the default template and working well:

[mythcat@desk CSharpProjects]$ cd MyGame001
[mythcat@desk MyGame001]$ ls
app.manifest  Content  Game1.cs  Icon.bmp  Icon.ico  MyGame001.csproj  Program.cs
[mythcat@desk MyGame001]$ dotnet run Program.cs 

The default source code from Program.cs file is this:

using System;

namespace MyGame001
{
    public static class Program
    {
        [STAThread]
        static void Main()
        {
            using (var game = new Game1())
                game.Run();
        }
    }
} 

Fedora 33 : Smokeping tool.

Smokeping is a latency measurement tool. It sends test packets out to the net and measures the amount of time they need to travel from one place to the other and back. SmokePing consists of a daemon process which organized the latency measurements and a CGI which presents the graphs. 

You can install it like a webpage, see a demo on this webpage with Customers.SALAG.

[root@desk mythcat]# dnf search SmokePing
Last metadata expiration check: 0:12:18 ago on Tue 17 Nov 2020 08:45:57 PM EET.
=============================== Name Matched: SmokePing ===============================
smokeping.noarch : Latency Logging and Graphing System
[root@desk mythcat]# dnf install smokeping.noarch
Last metadata expiration check: 0:12:24 ago on Tue 17 Nov 2020 08:45:57 PM EET.
Dependencies resolved.
=======================================================================================
 Package                    Architecture  Version                  Repository     Size
=======================================================================================
Installing:
 smokeping                  noarch        2.7.3-2.fc33             fedora        564 k
Installing dependencies:
 fedora-logos-httpd         noarch        30.0.2-5.fc33            fedora         15 k
 fping                      x86_64        5.0-1.fc33               fedora         38 k
 httpd                      x86_64        2.4.46-1.fc33            fedora        1.4 M
 httpd-filesystem           noarch        2.4.46-1.fc33            fedora         14 k
 httpd-tools                x86_64        2.4.46-1.fc33            fedora         83 k
 libdbi                     x86_64        0.9.0-16.fc33            fedora         50 k
 mod_fcgid                  x86_64        2.3.9-21.fc33            fedora         77 k
 mod_http2                  x86_64        1.15.14-2.fc33           fedora        152 k
 perl-CGI                   noarch        4.50-4.fc33              fedora        198 k
 perl-CGI-Fast              noarch        2.15-6.fc33              fedora         18 k
 perl-Config-Grammar        noarch        1.13-6.fc33              fedora         29 k
 perl-FCGI                  x86_64        1:0.79-5.fc33            fedora         47 k
 perl-Net-DNS               noarch        1.21-5.fc33              fedora        356 k
 perl-Net-Telnet            noarch        3.04-15.fc33             fedora         62 k
 perl-Path-Tiny             noarch        0.114-3.fc33             fedora         67 k
 perl-SNMP_Session          noarch        1.13-25.fc33             fedora         67 k
 perl-Unicode-UTF8          x86_64        0.62-13.fc33             fedora         26 k
 rrdtool                    x86_64        1.7.2-14.fc33            fedora        569 k
 rrdtool-perl               x86_64        1.7.2-14.fc33            fedora         43 k

Transaction Summary
=======================================================================================
Install  20 Packages

Total download size: 3.8 M
Installed size: 11 M
Is this ok [y/N]: y
Downloading Packages:
...
Complete!
[root@desk mythcat]# dnf install lighttpd
...
Complete!

[root@desk mythcat]# dnf install lighttpd-fastcgi
...
Complete!

Most users use the smokeping service:

sudo service smokeping start
sudo service smokeping status

You can set your configuration file using this file:

[mythcat@desk ~]$ sudo vi /etc/smokeping/config

I let this file unchanged and I run these commands:

[mythcat@desk ~]$ sudo smokeping --check
Configuration file '/etc/smokeping/config' syntax OK.
[mythcat@desk ~]$ sudo smokeping --debug
### Compiling alert detector pattern 'someloss'
### >0%,*12*,>0%,*12*,>0%
...
Smokeping version 2.007003 successfully launched.
Not entering multiprocess mode with '--debug'. Use '--debug-daemon' for that.
FPing: probing 3 targets with step 300 s and offset 118 s.
FPing: Executing /usr/sbin/fping -C 20 -q -B1 -r1 -4 -i10 planet.fedoraproject.org fedoraproject.org 
docs.fedoraproject.org
FPing: Got fping output: 'planet.fedoraproject.org : 165 166 167 167 165 172 165 165 165 164 168 165 166 165
165 164 165 164 171 165'
FPing: Got fping output: 'fedoraproject.org        : 77.8 75.6 75.0 68.3 69.1 73.6 71.1 71.1 69.0 67.5
69.9 69.5 70.6 70.8 76.9 76.0 70.8 70.6 72.1 68.3'
FPing: Got fping output: 'docs.fedoraproject.org   : 171 165 165 165 180 164 170 164 164 165 163 171 
169 160 170 167 166 166 166 164'
Calling RRDs::update(/var/lib/smokeping/rrd/Ping/FedoraprojectOrg.rrd --template uptime:loss:median:
ping1:ping2:ping3:ping4:ping5:ping6:ping7:ping8:ping9:ping10:ping11:ping12:ping13:ping14:ping15:
ping16:ping17:ping18:ping19:ping20 1605642550:U:0:7.0800000000e-02:6.7500000000e-02:
...
1.6700000000e-01:1.6800000000e-01:1.7100000000e-01:1.7200000000e-01)

Fedora 33 : Install PyGame 2.0 on Fedora.

Today I will show you how to install the python PyGame version 2.0 package with python version 3.9 in Fedora 33 distro. Let's install all Fedora packages need for this python package:

[root@desk pygame]# dnf install SDL2-devel.x86_64 
...
Installed:
  SDL2-devel-2.0.12-4.fc33.x86_64                                               

Complete!
[root@desk pygame]# dnf install SDL2_ttf-devel.x86_64
...
Installed:
  SDL2_ttf-2.0.15-6.fc33.x86_64       SDL2_ttf-devel-2.0.15-6.fc33.x86_64      

Complete!
[root@desk pygame]# dnf install SDL2_image-devel.x86_64
...
Installed:
  SDL2_image-2.0.5-5.fc33.x86_64      SDL2_image-devel-2.0.5-5.fc33.x86_64     

Complete!
[root@desk pygame]# dnf install SDL2_mixer-devel.x86_64 
...
Installed:
  SDL2_mixer-2.0.4-7.fc33.x86_64      SDL2_mixer-devel-2.0.4-7.fc33.x86_64     

Complete!
[root@desk pygame]# dnf install SDL2_gfx-devel.x86_64 
...
Installed:
  SDL2_gfx-1.0.4-3.fc33.x86_64        SDL2_gfx-devel-1.0.4-3.fc33.x86_64       

Complete!
[root@desk pygame]# dnf install portmidi-devel.x86_64 
...
Installed:
  portmidi-devel-217-38.fc33.x86_64                                             

Complete!

Use this command to clone it from GitHub and install it:

[mythcat@desk ~]$ git clone https://github.com/pygame/pygame
Cloning into 'pygame'...
remote: Enumerating objects: 4, done.
remote: Counting objects: 100% (4/4), done.
remote: Compressing objects: 100% (4/4), done.
remote: Total 38509 (delta 0), reused 0 (delta 0), pack-reused 38505
Receiving objects: 100% (38509/38509), 17.78 MiB | 11.66 MiB/s, done.
Resolving deltas: 100% (29718/29718), done.
[mythcat@desk ~]$ cd pygame/
[mythcat@desk pygame]$ python3.9 setup.py install --user


WARNING, No "Setup" File Exists, Running "buildconfig/config.py"
Using UNIX configuration...


Hunting dependencies...
SDL     : found 2.0.12
FONT    : found
IMAGE   : found
MIXER   : found
PNG     : found
JPEG    : found
SCRAP   : found
PORTMIDI: found
PORTTIME: found
FREETYPE: found 23.4.17

If you get compiler errors during install, double-check
the compiler flags in the "Setup" file.
...
copying docs/pygame_tiny.gif -> build/bdist.linux-x86_64/egg/pygame/docs
creating build/bdist.linux-x86_64/egg/EGG-INFO
copying pygame.egg-info/PKG-INFO -> build/bdist.linux-x86_64/egg/EGG-INFO
copying pygame.egg-info/SOURCES.txt -> build/bdist.linux-x86_64/egg/EGG-INFO
copying pygame.egg-info/dependency_links.txt -> build/bdist.linux-x86_64/egg/EGG-INFO
copying pygame.egg-info/entry_points.txt -> build/bdist.linux-x86_64/egg/EGG-INFO
copying pygame.egg-info/not-zip-safe -> build/bdist.linux-x86_64/egg/EGG-INFO
copying pygame.egg-info/top_level.txt -> build/bdist.linux-x86_64/egg/EGG-INFO
writing build/bdist.linux-x86_64/egg/EGG-INFO/native_libs.txt
creating dist
creating 'dist/pygame-2.0.1.dev1-py3.9-linux-x86_64.egg' and adding 'build/bdist.linux-x86_64/egg' to it
removing 'build/bdist.linux-x86_64/egg' (and everything under it)
Processing pygame-2.0.1.dev1-py3.9-linux-x86_64.egg
creating /home/mythcat/.local/lib/python3.9/site-packages/pygame-2.0.1.dev1-py3.9-linux-x86_64.egg
Extracting pygame-2.0.1.dev1-py3.9-linux-x86_64.egg to /home/mythcat/.local/lib/python3.9/site-packages
Adding pygame 2.0.1.dev1 to easy-install.pth file

Installed /home/mythcat/.local/lib/python3.9/site-packages/pygame-2.0.1.dev1-py3.9-linux-x86_64.egg
Processing dependencies for pygame==2.0.1.dev1
Finished processing dependencies for pygame==2.0.1.dev1

Let's test it:

[mythcat@desk pygame]$ ls
build	     dist  examples	    README.rst	setup.cfg  src_c   test
buildconfig  docs  pygame.egg-info  Setup	setup.py   src_py
[mythcat@desk pygame]$ python3.9
Python 3.9.0 (default, Oct  6 2020, 00:00:00) 
[GCC 10.2.1 20200826 (Red Hat 10.2.1-3)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import pygame
pygame 2.0.1.dev1 (SDL 2.0.12, python 3.9.0)
Hello from the pygame community. https://www.pygame.org/contribute.html
>>>