https://www.theverge.com/2018/10/1/17922628/google-text-adventure-easter-egg-console
Archive for 2019
How to find and play Google.com’s secret adventure game – The Verge
Posted by jpluimers on 2019/06/21
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Stugge kabel probleem – Netwerken – GoT
Posted by jpluimers on 2019/06/21
[WayBack] Stugge kabel probleem – Netwerken – GoT: talkpoeder is het geheim om stugge kabels door een bochtig stelsel PVC pijpen te trekken.
–jeroen
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To use the – undocumented – GetItCmd.exe CLI version of the GetIt package manager, run rsvars.bat first – via G+
Posted by jpluimers on 2019/06/20
Interesting observation on [WayBack] How do you use the CLI version of GetIt Package Manager. I always get a “no items were found.” response. As usual, the EMBT wiki is total rubbish and do… – Graeme Geldenhuys – Google+.
What you need for GetItCmd, is to run rsvars.bat for your Delphi version first, which is exactly what [WayBack] Run-Dependend-rsvars-From-Path.bat – which I wrote a while ago – does.
I did not even know that there was a CLI equivalent of [WayBack] GetIt – RAD Studio , but it is there, totally undocumented: GetItCmd apart from two filename references on the French and German docwiki:
- [WayBack] Befehlszeilenhilfsprogramme – Index – RAD Studio
- [WayBack] Utilitaires de ligne de commande – Index — RAD Studio
Apart from that, I could only find these links:
- [WayBack] Can’t compile when GetIt dependence defined:Hi @ all,when packages are selected in GetIt-dependences (project-options), compiling fails with the following error:[MSBuild Fehler] The
- [WayBack] rad-wine-wrappers/Makefile.am at master · NetwideRogue/rad-wine-wrappers · GitHubwrappers to make RAD Studio easier to use on *nix. Contribute to NetwideRogue/rad-wine-wrappers development by creating an account on GitHub.
Another odd thing: rsvars.bat is also not documented, and has just one reference in the docwiki: [WayBack] Using CMake with C++ Builder – RAD Studio.
The use of rsvars.bat is simple: it sets the below environment variables (some older versions set less variables, like missing PLATFORM or PlatformSDK) for use with the IDE (bds32.exe), msbuild and GetIt.
BDS BDSINCLUDE BDSCOMMONDIR FrameworkDir FrameworkVersion FrameworkSDKDir PATH LANGDIR PLATFORM PlatformSDK
(some of these are set to empty to they at least exist)
Later on, Marco Cantu reacted
The command line version of GetIt is not stable, so it was never “promoted” to being a feature. It was a tentative feature, we likely removed the English doc, but translations remained — so having that documentation is kind of an error. We ship is as we use it, with a specific command that works and is safe. In other words, use it as your own risk, as it is not an official feature.
So apparently, the only way that GetIt works, is through a specific command in GetItCmd. From an architectural point of view that gives me a “lets get this tick on the feature matrix done no matter what the architectural consequences are” feeling.
–jeroen
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How to test if an executable exists in the %PATH% from a windows batch file? – Stack Overflow
Posted by jpluimers on 2019/06/20
I needed a solution inside a batch file for git similar to [WayBack] How to test if an executable exists in the %PATH% from a windows batch file? – Stack Overflow which became this:
where /q git || echo Cound not find git on the PATH %PATH%. && goto :eof
I could have expanded this to find the install location, but for now this is sufficient.
When it is needed, I should read [WayBack] Programmatically (not manually) finding the path where Git is installed on a Windows system – Stack Overflow
–jeroen
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Posted in Batch-Files, Development, DVCS - Distributed Version Control, git, Scripting, Software Development, Source Code Management | Leave a Comment »
Splitting user settings from your Delphi projects: DprojSplitter by Uwe Raabe
Posted by jpluimers on 2019/06/20
Reminder to self to try this out: [WayBack] Working in a team? DprojSplitter might be helpful! | The Art of Delphi Programming.
The most recent version (covering a wider range of Delphi versions) was at [WayBack] DprojSplitter for Delphi XE2 to XE6 available | The Art of Delphi Programming.
DprojSplitter handles the current build configuration and current plattform. In addition these settings are handled, too (found in CommonOptionStrs):
sDebugger_RunParams,
sDebugger_RemoteRunParams,
sDebugger_HostApplication,
sDebugger_RemotePath,
sDebugger_RemoteHost,
sDebugger_EnvVars,
sDebugger_SymTabs,
sDebugger_Launcher,
sDebugger_RemoteLauncher,
sDebugger_IncludeSystemVars,
sDebugger_UseLauncher,
sDebugger_UseRemoteLauncher,
sDebugger_CWD,
sDebugger_RemoteCWD,
sDebugger_RemoteDebug,
sDebugger_DebugSourcePath,
sDebugger_LoadAllSymbols,
sDebugger_LoadUnspecifiedSymbols,
sDebugger_SymbolSourcePath
Heck, you can even configure the ones to split: [WayBack] Configuring DprojSplitter to Your Needs | The Art of Delphi Programming
–jeroen
via:
- [WayBack] DprojSplitter for Delphi XE2 to XE6 available http://www.uweraabe.de/Blog/2017/08/06/dprojsplitter-for-delphi-xe2-to-xe6-available/ – Uwe Raabe – Google+
- [WayBack] How to configure DprojSplitter: – Uwe Raabe – Google+
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Some links about the TCP SACK PANIC attacks on Linux and FreeBSD Kernels
Posted by jpluimers on 2019/06/20
The TCP SACK vulnerabilities as found by Netflix: [WayBack] security-bulletins/2019-001.md at master · Netflix/security-bulletins · GitHub.
Easy, but slow workaround from [WayBack] linux – How to disable TCP SACK for CentOS? – Super User:
Temporary (until boot):
echo "0" > /proc/sys/net/ipv4/tcp_sackPermanent (even after boot):
echo "net.ipv4.tcp_sack = 0" >> /etc/sysctl.conf sysctl -p
Coverage:
- [WayBack] Sad SACK: Linux PCs, servers, gadgets may be crashed by ‘Ping of Death’ network packets • The Register
Don’t let miscreants play hacky-SACK with your gear. Apply these mitigations, patches now if you can
- [WayBack] TCP SACK PANIC: Linux- und FreeBSD-Kernel lassen sich aus der Ferne angreifen | heise online
- [WayBack] Security Vulnerability: TCP SACK Denial of Service attacks aka “SACK Panic” – CVE-2019-11477, CVE-2019-11478 & CVE-2019-11479 | Support | SUSE
- [WayBack] SACK Panic – Multiple TCP-based remote denial-of-service issues | Hacker News
–jeroen
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Posted in *nix, *nix-tools, Communications Development, Development, Internet protocol suite, Power User, Security, TCP | Leave a Comment »
SQL Server 8060 row size query limit
Posted by jpluimers on 2019/06/19
Every now and then you bump into a limit you did not know it existed before:
Cannot create a row of size 8209 which is greater than the allowable maximum row size of 8060.
This is while querying a few tables having a combined column size of more than 8060. Which means it is not just about single tables being too wide.
Related:
- [WayBack] Why should I rebuild a table after dropping or adding a column? – Simple Talk
- [WayBack] sql server – Cannot create a row of size 8937 which is greater than the allowable maximum of 8060 – Stack Overflow
- [WayBack] SQL Server: Practical example of Exceeding the maximum row size of 8060
While creating a new table:
Msg 1701, Level 16, State 1, Line 1 Creating or altering table 'tbl_LargeTable' failed because the minimum row size would be 8062, including 7 bytes of internal overhead. This exceeds the maximum allowable table row size of 8060 bytes.
While expanding an existing table:
Warning: The table "tbl_LargeTable" has been created, but its maximum row size exceeds the allowed maximum of 8060 bytes. INSERT or UPDATE to this table will fail if the resulting row exceeds the size limit.
While inserting:
Msg 511, Level 16, State 1, Line 1 Cannot create a row of size 8061 which is greater than the allowable maximum row size of 8060. The statement has been terminated.
- [WayBack] SQL Server: What happened, when Row Overflow and Data Exceeding 8KB?
- [WayBack] SQL Server: The Internal Structure of the Data Page:
Database Research & Development: Explained basic about the internal 8KB Data Page structure of the SQL Server.
–jeroen
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Posted in Database Development, Development, SQL, SQL Server | Leave a Comment »
Pattern: Service Mesh
Posted by jpluimers on 2019/06/19
I need to re-read this: [WayBack] Pattern: Service Mesh
Via [WayBack] What is a Service Mesh? What is the purpose of Istio? – The Isoblog. /[Archive.is] What is a Service Mesh? What is the purpose of Istio in Kubernetes? … – Kristian Köhntopp – Google+:
An article by Phil Calçado explains the Container Pattern “Service Mesh” and why one would want that in a really nice way.
Phil uses early networking as an example, and explains how common functionality needed in all applications was abstracted out of the application code and moved into the network stack, forming the TCP flow control layer we have in todays networking.
A similar thing is happening with other functionality that all services that do a form of remote procedure call have to have, and we are moving this into a different layer. He then gives examples of the ongoing evolution of that layer, from Finagle and Proxygen through Synapse and Nerve, Prana, Eureka and Linkerd. Envoy and the resulting Istio project of CNCF are the current result of that development, but the topic is under research, still.
–jeroen
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Relays and Arduino / ESP8266 / ESP8266X
Posted by jpluimers on 2019/06/19
As a follow-up on Raspberry Pi and relays – follow up on Having one Raspberry Pi reset another Raspberry Pi through relay or transistor some of my research links to bring this to Arduino, ESP8266, ESP8266X and similar devices:
- [WayBack] Home Automation – How to Add Relays to Arduino: 9 Steps
- [Archive.is] 2 way lighting circuit control with blynk and feedback updates – Projects made with Blynk – Blynk
- [WayBack] Control a Relay From Anywhere Using the ESP8266
- [WayBack] D1 [WEMOS Electronics]
- [WayBack] WiFi / Internet Controlled Relays Using ESP8266 – Quick, 30 Minutes IoT Project: 3 Steps (with Pictures)
–jeroen
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Switching Delphi XML DOM vendors
Posted by jpluimers on 2019/06/18
I thought I had written a blog article on switching DOM vendors before, but in retrospect that was a conference presentation somewhere in 2011: https://github.com/jpluimers/Conferences/tree/master/2011/EKON15-Renaissance-Hotel-D%C3%BCsseldorf/Delphi-XE2-and-XML
I mentioned some of the materials at [WayBack] delphi – Reading distinct values from XML using XPath – Stack Overflow.
It was back in the days I worked for better office, Gwan Tan was still alive and CodePlex was still a thing. Now the code is at [WayBack] bo library – CodePlex Archive: An archive of the CodePlex open source hosting site.
Some recovered bits are at https://gist.github.com/jpluimers/98dcec944538fd6986fd2d51f7a79d8b#file-mainformunit-pas that shows the selection process of a TDOMVendor, how to log its capabilities and how to use it all in the method procedure TMainForm.LogDomVendor(const CurrentDomVendor: TDOMVendor);
Hopefully one day I can resurrect the code one day…
Over the years, the vendor list has not changed much [WayBack] Using the Document Object Model – RAD Studio documents these vendors.
Compared to Delphi 2007 and earlier, OmniXML has gone and ADOM has entered.
On the MSXML side, you can change which version you use too, as explained in Quick tip: using MSXML v6 with TXMLDocument in D7-D2007 – DelphiFeeds.com with the original article at [WayBack] Quick tip: using MSXML v6 with TXMLDocument in D7-D2007 | Delphi Haven.
Basically he overwrites MSXMLDOMDocumentCreate with a method creating the right MSXML DOM document. That has now been deprecated as [WayBack] Xml.Win.msxmldom.MSXMLDOMDocumentCreate – RAD Studio API Documentation now points to [WayBack] Xml.Win.msxmldom.TMSXMLDOMDocumentFactory.CreateDOMDocument – RAD Studio API Documentation.
List of Built-in XML Vendors
The following table shows a comparison of the XML vendors that RAD Studio supports by default:
Implementation Unit Global Variable Description MSXML Xml.Win.msxmldom SMSXMLFastest of the built-in RAD Studio XML vendors. Windows only. Default. For cross-platform support, you must choose a different XML vendor. If you do not specify a different XML vendor, your application does not have XML support on other platforms than Windows, and you see a run-time exception when you run your application in other platforms.
OmniXML Xml.omnixmldomsOmniXmlVendorMuch faster than ADOM, but slightly slower than MSXML. Cross-platform. ADOM Xml.adomxmldomsAdom4XmlVendorSlower than the other built-in RAD Studio XML vendors. Cross-platform.
–jeroen
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The Wiert Corner - irregular stream of stuff 