In the street with my laptop

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2022.09.27   Free Pascal   When looking at my website statistics, it seems (a bit surprising for me) that there are rather lot of people, who are interested in Free Pascal command line programming; the sources of the console version of my Snake game is one of the most downloaded files on the site. This inspired me to write this new program: Simple command line Blackjack card game.

2022.09.25   Sysadmin   New tutorial available in the Computer Administration section: Installing Windows 1.x and Windows 2.x on VMware.

2022.09.21   Sysadmin   New problems related help available in the Computer Administration section: Some problems concerning EndeavourOS: 1. system update failure; 2. wrong time display; 3. no scrollbars in terminal.

2022.09.20   Sysadmin   New tutorial available in the Computer Administration section: Installing a Windows and Linux dual boot (Windows NT bootloder). The tutorial is about BIOS boot, the operating systems used being Windows XP and Knoppix 3.3. It also includes details about how edit lilo.conf and reinstall the LILO bootloader.

2022.09.16   General   Actually working at a rather important website content reorganization. The major change is the new Computer Administration section, where I publish my computer system and network administration related articles. The System and Network Administration part of the Learning section has been removed, the Learning section itself somewhat reorganized and with only mathematics and science related articles now. The new section being intended for "real" computer administration related articles only, the website and database articles previewed will be published in the Website and Database Programming section. Software description and software installation related tutorials have been moved to the newly created Computer Basics/Software subsection, together with my Windows (10) application reviews.
As the reorganization isn't completely finished, some articles aren't actually available or lead to an "under re-construction" page. Also to note that some links, in Google Search, and possibly also on this site, will no longer work...

2022.09.12   Free Pascal   New Lazarus/Free Pascal GUI electronics application available: Simulation of MOSFET based NAND and NOR gates.

2022.09.10   Free Pascal   New tutorial available: Installation of Lazarus/Free Pascal on Solus. The tutorial includes details about how to proceed to resolve the issues with the linkage failure due to gtklib-2-devel not being installed and the not found files crtbeginS.o and crtendS.o (gcc not being installed).

2022.09.07   Free Pascal   Data update of my Memory game application: 2 new picture sets available.

2022.09.04   Free Pascal   New Lazarus/Free Pascal GUI mathematics application available: Tangent and normal to an ellipse.

2022.09.02   Free Pascal   New tutorial in the Lazarus/Free Pascal Project part of the Lazarus/Free Pascal Programming section: Using Microsoft SQL Server databases with Lazarus/Free Pascal. Just the very basics...

2022.08.28   Sysadmin   New tutorial available in the Computer Administration section: Adding an LVM PV on Centos 7.

2022.08.27   Free Pascal   New Lazarus/Free Pascal GUI language application (grammar-trainer) available for download: Degrees of comparison of German adjectives.

2022.08.24   Sysadmin   New tutorial available in the Computer Administration section: Installing a Windows and Linux dual boot (Linux bootloder). The tutorial is about BIOS boot, the operating systems used being Windows Me and Q4OS. It also includes details about how to use the GRUB Customizer utility to change the boot session parameters.

2022.08.17   Web/DB   Update of my tutorial Web development environment setup on MS Windows: MariaDB, adding a new part, concerning the connection from a Python script.

2022.08.15   Web/DB   New tutorial in the Web and Database Development section of my site: Web development environment setup on MS Windows: Python. The tutorial contains details concerning the installation of Python 3 and the Python IDE Thonny, about the Python package manager PIP, about running Python scripts in Windows Command Prompt and as CGI on an Apache webserver, about accessing a MySQL database from within Python scripts.

2022.08.10   Sysadmin   New help text available in the Computer Administration section: Some tips concerning Knoppix 3.3.

2022.08.01   Free Pascal   Data update of my Puzzle for kids application: 3 new puzzle pictures (20, 40, and 88 pieces) available.

2022.07.30   Sysadmin   New tutorial available in the Computer Administration section: Installing a Windows 98 and Windows 95 dual boot.

2022.07.24   Web/DB   I guess that I wrote my HTML color picker 2019 online application in 2019. It's only now, that the description of the application is ready to be published. Including the download link to the Javascript code (as well the code of the server based than of the offline version), of course. The page also contains longer texts concerning the physics of colors and the usage of colors on a webpage and within Free Pascal.

2022.07.22   Sysadmin   New tutorial available in the Computer Administration section: Installing a Windows 2000 and Windows NT dual boot.

2022.07.20   Free Pascal   And another Lazarus installation tutorial: Installation of Lazarus/Free Pascal on PCLinuxOS. The tutorial includes details about how to proceed to resolve the issues with Fppkg and the not found files crtbeginS.o and crtendS.o.

2022.07.17   Sysadmin   New tutorial available in the Computer Administration section: Creating VMware macOS guests on a Windows host. With other words: a tutorial about how to run macOS on a Windows PC.

2022.07.14   Free Pascal   New Lazarus/Free Pascal GUI electronics application available for download: Properties of an ideal transformer, with study of the voltage, current and impedance as a function of the number of coil turns.

2022.07.13   Basics   New tutorial available in the Computer basics: System & Security section: Performing an external virus check using a Live-CD.

2022.07.10   Free Pascal   Continuing with my Lazarus installation tutorials; another one for Linux users: Installation of Lazarus/Free Pascal on Centos. The tutorial includes details about how to proceed to resolve the issue with the FPC compiler RPM on CentOS 7.

2022.07.03   Free Pascal   New Lazarus/Free Pascal GUI application available for download: Listing of MP3 files in MS Windows "Music" library.

2022.07.01   Basics   New help text in the Computer basics: System & Security section: Control Windows 8 desktop icons spacing.

2022.06.24   Basics   My Lazarus/Free Pascal Programming section contains a tutorial about installing FreePascal 3.2.2 on FreeDOS and last month, I published a tutorial about running Perl 5.8 on FreeDOS. These are not the only nowadays development environments that you can use to create applications for DOS. New tutorial in the Computer Basics: Software section: Installing and running FreeBASIC on FreeDOS. The tutorial also includes details about how to configure the amazing SET's Editor for usage with FreeBASIC.

2022.06.22   Free Pascal   New Lazarus/Free Pascal GUI application available for download: Vegetable picture-quiz for kids.

2022.06.18   Free Pascal   Continuing with my Lazarus installation tutorials; another one for Linux users: Installation of Lazarus/Free Pascal on Fedora.

2022.06.16   Homeless   New text in the Online press articles part of my Homeless life in Luxembourg site: My personal comments concerning an article about the new law, concerning canabis consumption, published by L'essentiel on June 13th, 2022.

2022.06.14   Sysadmin   New problems related help text available in the Computer Administration section: VMware Tools problem on Windows Vista.

2022.06.11   Free Pascal   New Lazarus/Free Pascal GUI application available for download: Simple "Seventeen plus four" dice game for 1 to 3 players.

2022.06.06   Basics   New help text in the Computer basics: System & Security section: Unblocking applications that do not react if you try to launch them.

2022.05.31   Web/DB   Big sorry for an "in a few days" that lasted several months. But, better late than never: The (Perl) sources of my Simple Nim game web application are now available for download.

2022.05.27   Basics   If you are a FreeDOS user (or if you want to become one), what about running Perl on DOS? If you need some help to install Perl 5.8 on FreeDOS, to configure it and by the way to learn how to clear the screen and jump to a given screen position with Perl, my new tutorial in the Computer Basics: Software section: Installing and running Perl 5 on FreeDOS might be interesting for you. Even if you aren't interrested in Perl, but just are searching for a programming editor for DOS, you might want to have a look at the tutorial. SET's Editor is without any doubt one of the most configurable editors that exists. It includes lots of features, syntax highlighting for lots of programming languages (including Perl), and the tutorial shows how to proceed to run the Perl interpreter (and this would be similar for any other interpreter or compiler) from within the editor and collect the errors and warnings in the editor's Messages window.

2022.05.24   Free Pascal   New chemistry Lazarus/Free Pascal GUI application available for download: Calculation of the concentration of a solution.

2022.05.18   Free Pascal   New Lazarus tutorial for Linux users available: Installation of Lazarus/Free Pascal on openSUSE.

2022.05.15   Homeless   First text in the Online press articles part of my Homeless life in Luxembourg site: My personal comments, concerning an article about the Europe Day, published by L'essentiel on May 6th, 2022.

2022.05.12   Sysadmin   Another small help text available in the Computer Administration section: Playing MP4 videos on openSuse.

2022.05.07   Sysadmin   The first real tutorial available in the Computer Administration section: Using LVM disk storage layout on Ubuntu Server.

2022.05.04   Free Pascal   New mathematics command line program available for download: Second degree complex equations in 1 variable.

2022.04.27   Web/DB   A short description, with download link to the source code, of the DNA molecular weight calculator Perl CGI application is now available.

2022.02.25   Web/DB   New (very short) text available in the Web and Database Programming Tips section of my site: Setting the input focus onto a given form field.

2022.04.21   Free Pascal   New language Lazarus/Free Pascal GUI application available for download: Conjugation of Spanish verbs in -er. Also available a new version (with some minor bug fixes) of Conjugation of Spanish verbs in -ar.

2022.04.15   Free Pascal   New physics/electronics Lazarus/Free Pascal GUI application (exercise generator) available for download: Resonance in RLC circuits.

2022.04.14   Web/DB   Better late than never! After one and a half year, AnimalDB - Allu's personal animal database is online again! Not yet with all functionalities (animal detail pages actually not available), but the beginning has been made and the animal photoalbums (beautiful pictures) may be viewed.

2022.04.10   Sysadmin   A small help text available in the Computer Administration section: Disabling the guest account on Ubuntu Desktop.

2022.04.08   Free Pascal   New Free Pascal programming tutorial available: Accessing Microsoft Windows libraries, a description of what libraries are, where to find information about their content and how to access library folders, using my Free Pascal WinLibs unit (incl. a download link for WinLibs, of course).

2022.04.03   Free Pascal   Data update of my Puzzle for kids application: 3 new puzzle pictures (18, 40, and 80 pieces) available.

2022.04.02   Free Pascal   New mathematics command line program available for download: First degree complex equations in 1 variable.

2022.03.26   Basics   New help text in the Computer basics: System & Security section: Using ZoneAlarm Free Firewall with Avira Free Antivirus, where I show how to proceed in order to get of the Avira warning that the firewall would be disabled, if you replace the native Windows firewall with ZoneAlarm.

2022.03.25   Basics   New help text in the Computer basics: Network & Internet section: Avast Free Antivirus and Firefox false positive prefs.js.

2022.03.21   Free Pascal   The fourth installation tutorial available in The Lazarus/Free Pascal Project section: Installing Free Pascal on FreeDOS.

2022.03.15   Free Pascal   New mathematics Free Pascal GUI application available for download: Basic matrix arithmetic and row operations.

2022.03.08   Web/DB   A short description, with download link to the source code, of the Logarithm equations Perl CGI application (online exercise generator) is finally available.

2022.03.07   Free Pascal   After Windows and Linux (Ubuntu), now also a tutorial about Installing Lazarus/Free Pascal on macOS. Beside the prerequisites and installation details, the tutorial also contains a section, that describes the reconfiguration of the Lazarus debugger in order to use LLDB, installed (as replacement of GDB) with the latest versions of the XCode command line tools.

2022.03.06   Free Pascal   (Very simple) new Free Pascal GUI application available for download: Play musical notes and simple melodies.

2022.02.28   Sysadmin   6 small help texts available in the Computer Administration section: 1. Moving a VMware virtual disk; 2. Disabling cloud-init on Ubuntu Server; 3. VMware Tools problem on Ubuntu; 4. VMware Linux guest sound problem on a Windows host; 5. SCSI disks not recognized by Windows XP; 6. Disk size limits on Windows NT.

2022.02.21   Basics   New tutorial in the Computer basics: System & Security section: Resizing and moving a partition on MS Windows.

2022.02.19   Free Pascal   New computing Free Pascal GUI application ready: Show the computers actually present on the (local) network.

2022.02.10   Free Pascal   After Greek, Hebrew, Russian and Sanskrit, a fifth basic languages application available for download: Learn the Arabic alphabet.

2022.02.09   Web/DB   New text available in the Web and Database Programming Tips section of my site: Using Javascript to run a Perl CGI script, where I show two cases how Perl and Javascript can work together: 1. Checking form data with Javascript, before sending it to the Perl script. 2. Using Javascript to open the output of a Perl script in a new browser window.

2022.02.03   Free Pascal   New tutorial in The Lazarus/Free Pascal Project section of my site: Creating a project using existing Lazarus resources, where I try to explain how to do to use an existing project as template for a new one, how to use an existing form within a new project, how to add an existing unit to a new project and how to do use already created form components to create new ones.

2022.01.29   Free Pascal   New Free Pascal geography GUI application ready: European lakes quiz.

2022.01.23   Free Pascal   New chemistry (quantum physics) application available: Bohr's theory of the hydrogen atom.

2022.01.17   Free Pascal   Good news for all those who experience problems with the display of non-ASCII characters in Windows Command Prompt (and I guess that's the main reason for some 50 people to read my tutorial each month). Completely reviewed, corrected and extended my Creating command line programs with Lazarus tutorial, explaining what are the factors to consider when writing to the console and showing how you have to configure Windows Region to get a correct display in most situations.

2022.01.11   Free Pascal   New logic game (number puzzle) available: Mathrax.

2022.01.10   Homeless   New article in the Respect and Human dignity section of my Homeless life in Luxembourg site: Covid-19 and vaccination: Questions to the political responsibles.

2022.01.05   Free Pascal   New version of my Lazarus/Free Pascal command line program Website downloads count. Primarily targeted for my own system, the new features (2 server directories per count and multiple monthly statistics files) may also be of interest for others.

2021.07.23   General   It's done (at least partially)! My website is installed on a VPS and thus will stay online during the transition phase, where HelioHost rebuilds their servers. It was a rather hard work for a non-professional, but being hosted by HelioHost has one very big advantage: the power of their community forum. Thanks to all those, who helped me with some advice during the last days! For the site visitors, nothing has changed. The same address (www.streetinfo.lu) and as on Tommy a secure connection with https.

2021.05.19   General   Up from today, all data transfer to and from my site will be encrypted (usage of the HTTPS protocol by default). In fact, all access via the insecure HTTP protocol is redirected to HTTPS. This ensures, that everybody, that visits the site, will have a secure connection. Thus, new URL: https://www.streetinfo.lu. One drawback, however: The HelioHost servers use TLS 1.2 and, having a shared IP address, my webserver uses autoSSL, depending on Server Name Indication (SNI). This means that older operating systems and older webbrowsers (e.g. Internet Explorer 6, standard browser on Windows XP; not sure if Windows XP is able to connect with Firefox) will no longer be able to access the site.

2018.08.26   General   Finally it has become a reality: streetinfo.lu: my own .lu domain! Big thanks to the one, who has made this possible!

2018.06.07   General   Due to the kindness of a gentle and friendly man, I had the chance to get an account on the HelioHost "Tommy" server. I made the decision to restart my In the street with my laptop website with a new URL: www.streetinfo.heliohost.org.

Dec 2017   General   Creation of an account on the HelioHost test server "Johnny" and started the In the street with my laptop website with URL www.allu62.heliohost.org, containing informatics related stuff (in particular my Lazarus/Free Pascal applications) as well as information concerning the homeless people in Luxembourg.