Old wiki main page (reproduced here).

Main Page

Welcome to the Svendsen Tech Wiki Replica - made to allow the former "wiki blog" to persist in some form.

NB. Note made 2021-10-13: This web site was moved to a new web server from a MediaWiki instance I parsed the markdown of and implemented as HTML. Scraped my own site for images, recreated links, etc. There are still some bugs, such as section links being erroneous where they are to be found in this modified "wiki". I have changed since I started to work on this web site. Too much for words to convey easily.

All code on this site is licensed under the MIT license unless otherwise stated. This means "as is" and no warranties. The text itself is licensed under a creative commons attribution share-alike license. Under no circumstance can Svendsen Tech (Joakim Borger Svendsen) be held responsible for anything that might occur as a result (direct or indirect) from using information or code on this web site.

I currently practice mindfulness and am waiting to be married to a woman. This would not have happened for most of the time I was working on this web page. Not that this changes the technical nature of the writing, but the aging of the articles clearly shows. I rewrote some parts of some articles as I went over this now, but it is not 100 %.

This blog was originally about PowerShell, music (the most recent topic addition), Perl, Python, Linux, Windows, technology, programming, system administration, finance and that which seems relevant - plus pseudorandom crap (almost literally here).

I feel a need to mention that this wiki has been a work in progress and I've learned and picked up new things along the way. The early articles don't always conform to my current preferred code style and are sometimes poorly structured (that still happens somewhat). The code style is influenced heavily by the official guidelines. The style guidelines can be found here (I haven't read all of them yet) - and the community guidelines are here.

I am considering (and have indeed sporadically been) rewriting some of the code and documentation, but it's tedious. With some exceptions, the content is mostly fine logically and functionally, so the motivation is lacking.

Click here for my Microsoft PowerShell Gallery profile (started publishing in October 2016) - and click here for my GitHub profile (started in April 2017).

Click here to see that, woo, I'm an expert, and would have scored significantly higher - if I had had a moment's peace during the test.


*Linux - I haven't been too kind to Tux yet. Not a lot of content.
*Windows (includes PowerShell articles)
*Python - Getting started on this topic.

How to Reach Me


Recommended Articles

*A Merge-Csv advanced function - Combines CSV files or custom PowerShell objects based on one or more shared columns/headers/properties (an ID column - such as one containing usernames) and creates a joined version with all columns from all files. Some consistency checking and reporting is done. Hey, even the guy who invented PowerShell (Jeffrey Snover) liked it enough to tweet me about it once back in the days.
*A Module With SSH Cmdlets For PowerShell - Pretty cool stuff. Based on the SSH.NET library found on GitHub. Connect to, execute commands against and collects results from multiple hosts via SSH, using this ready-made module.
*PowerShell foreach Loops And The ForEach-Object Cmdlet - Learn about foreach loops in PowerShell, and the ForEach-Object cmdlet used for pipeline processing.
*Get Folder Sizes with PowerShell, Blazingly Fast - Uses COM with a fallback to robocopy to avoid 260-character limit on path length seen with Get-ChildItem/.NET, and is also very fast.
*PSnmap - A PowerShell nmap-like program. TCP port scan subnets using CIDR notation, IP/subnet, IP or DNS/NetBIOS names. Runspaces for concurrency.
*PSipcalc - Retrieve network information about subnets and enumerate IPs in subnets with PSipcalc - a sort of PowerShell clone of the Linux ipcalc utility.
*STOXR - Currency Conversion Software - Open Exchange Rates API - Software to help automate currency conversion tasks using PowerShell/.NET. Fully functional trial version.
*Invoke-PsExec for PowerShell - cmdlet for streamlining use of PsExec.exe from PowerShell. Asynchronous with runspaces.
*ConvertTo-Json for PowerShell version 2 - If you need to create JSON in a generic, quite seamless way and need to do it with PowerShell version 2 (default in Windows Server 2008 R2 and Windows 7, but both these operating systems can be upgraded to later versions of PowerShell (unless you run Exchange 2010, SharePoint in some version I forgot and something else I forgot)).
*The PowerShell Where-Object cmdlet - Learn about PowerShell's Where-Object cmdlet.
*The PowerShell for loop - Learn about regular for loops in PowerShell.
*Get-WmiObject-Wrapper - A wrapper around Get-WmiObject that collects data from online servers/workstations and stores it in XML format. There's also a custom XML parser for generating CSV/other reports based on the XML schema Get-WmiObject-Wrapper uses. It's more useful than it sounds!
*PowerShell Benchmarking Module Built Around Measure-Command - When you want an easy-to-use interface to benchmark multiple runs of code in script blocks you specify.
*PowerShell Regular Expressions - Examples and details on most use cases for regular expressions with .NET/PowerShell. It's a comprehensive article.

Look, Mom! I'm a Recording Artist!

Hobbies. Music used to be a hobby that might be facing a small resurrection, with signs of age, wear and tear.

Now I have a few songs out. The one I will now "promote" the most is the one for a woman who helped me grow in ways there's no price tag on - and of course for my infinitely priceless dad (RIP mom).

I have an "artist page" here in the wiki now. I put it here.

If you have Apple Music or Spotify, I created playlists of my music in some assumed easiest orders to digest and that's probably best to check it out quickly:

*Playlist on Apple Music / iTunes: https://music.apple.com/no/playlist/my-music/pl.u-xlyNEpduky6312 - Four songs. *Playlist on Spotify: https://open.spotify.com/playlist/6jqfcEWDCjdYf9aVH6zJLt?si=C7v08o1VSCmOpw7CMzJ4KQ

For those without... YouTube:

*YouTube channel page created by my record company: https://www.youtube.com/channel/UCjopiPw_Dair-yLYZ2EVgcw *YouTube playlist I created myself with my song releases: https://www.youtube.com/playlist?list=PLKZc3hsB93DU4050oxYsYvU63DnB4nGyS

Links to "A Song for You", written by Leon Russell and originally performed by Donny Hathaway, in my cover version for my dad and woman:

*Apple Music / iTunes: https://music.apple.com/no/album/a-song-for-you-full-version-single/1473491407
*Amazon: http://www.amazon.com/gp/product/B07VBH6JX7
*Deezer: https://www.deezer.com/album/104209552
*Google Play: https://play.google.com/store/music/album?id=Benko5lljefo4s4h22q2zzu3t3m&tid=song-Tyi2shkm3iesgbrk7tsguzaohly
*iHeartRadio: https://www.iheart.com/artist/id-33065411/albums/id-75599675
*MediaNet: http://www.mndigital.com/content-experience/music_content/albums/461691641
*Napster: https://us.napster.com/artist/joakim-borger-svendsen/album/a-song-for-you-full-version-single
*Spotify: https://open.spotify.com/track/2CGyzENWSIQUASluqR1onD?si=Di0Xnd_pRxurDAFBrcW0ig
*Tidal: https://tidal.com/browse/track/113559568
*YouTube: https://youtu.be/6qeYV10-yyA

For further digging into my musical side, please click here and see my "music page". I have some songs with more spark (at least one, the "Girl, I Wanna Lay You Down" one.)

Despite the suggestive title... Here's a small version of the cover art that accurately reflects how friendly it is :)

Reward My Efforts?

If you find something here useful and want to reward my efforts, please consider donating a small amount. It's greatly appreciated even if it is done mostly as a gesture. Or put my songs on repeat for 24 hours, happily muted by external speakers, whichever you prefer!

External Resources

NB! Comment made 2020-02-26: Links were almost ten years old in some cases now and might no longer work so I removed the ones on Wordpress now without checking (sorry if they are/were still there...).

*https://microsoft.com/powershell - Microsoft's PowerShell page.
*http://poshcode.org - PowerShell Script Repository site run by Joel Bennett.
*http://powershell.org - A PowerShell community site.
*http://gallery.technet.microsoft.com/scriptcenter/ - Technet Script Center Repository
*http://www.powershellgallery.com/pages/GettingStarted - Microsoft's PowerShell Gallery - an online script/module repository with built-in access in PSv5
and up. *http://www.cpan.org - CPAN, The Comprehensive Perl Archive Network - with about 100,000 already written modules
*http://powershellhelp.space - PowerShell Help Files Encyclopedia/Archive on the web for PSv2, 3, 4, and 5.
*http://social.technet.microsoft.com/wiki/contents/articles/183.windows-powershell-survival-guide-en-us.aspx - Lots of PowerShell goodness.
*http://www.howtogeek.com/114344/5-cmdlets-to-get-you-started-with-powershell - 5 good PowerShell "beginner" cmdlets to start out with.
*http://www.leeholmes.com/blog/ - PowerShell developer Lee Holmes' blog.
*http://www.reddit.com/r/PowerShell/ - The PowerShell thread on reddit.
*http://blogs.msdn.com/b/powershell/ - MSDN PowerShell Blog

PowerShell Books

**http://powershell.com/cs/blogs/ebookv2/ - Tobias Weltner's free PowerShell ebook. Appropriate for beginners.
**http://www.hofferle.com/list-of-free-powershell-ebooks/ - A list of free PowerShell ebooks.
**http://www.amazon.com/dp/1617291080 - For people starting out. Don Jones' "PowerShell in a month of lunches" book.
**http://j.mp/1i29RAh - Intermediate. PowerShell Toolmaking.
**http://www.manning.com/payette2/ - For experts. PowerShell in Action by Bruce Payette, a core PowerShell team member. Now in some ways dated since it's about version 2 and when you're reading this there are later versions, but provides solid knowledge that is reusable in later versions, but can sometimes be optimized or done differently/better in these later versions.
***https://www.manning.com/books/windows-powershell-in-action-third-edition - Good news! PowerShell in Action is now updated, still with Bruce behind the wheel, now together with Richard Siddaway, to cover even PowerShell Core/6 (at the time of writing in alpha, seemingly).
**http://j.mp/1dhUwXO - Doug Finke's PowerShell for Developers book.

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If you want to reward my efforts