In the street with my laptop

What's new?


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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   Learning   Another small help text available in the Computer System and Network Administration part of the Learning section: Playing MP4 videos on openSuse.

2022.05.07   Learning   The first real tutorial available in the Computer System and Network Administration part of the Learning 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   Learning   A small help text available in the Computer System and Network Administration part of the Learning 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   Computing   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   Computing   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   Learning   6 small help texts available in the newly created Computer System and Network Administration part of the Learning 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   Computing   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.

2022.02.15   Learning   I'm actually spending lots of time with the setup of a multiple operating system VMware network. A great opportunity to learn lots of new things (or remember forgotten ones) concerning computer system and network administration. Wanting to share my experience and judging that this rather advanced topics do not fit in the Computer Basics section, I decided to reorganize the Mathematics and Science section, grouping the existing sub-sections to "make place" for a new one: Computer Administration.

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.