The Wiert Corner – irregular stream of stuff

Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Archive for the ‘Development’ Category

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Remote Desktop Auto Login Powershell Script · GitHub

Posted by jpluimers on 2020/05/29

Interesting: some PowerShell scripts that pipe a user and password through cmdkey.exe /generic:TERMSRV/$Computer /user:$User /pass:$Pass

–jeroen

Posted in *nix, Development, Linux, Power User, Software Development | Leave a Comment »

TOP 10 CD/DVD/Floppy Drives based Projects – YouTube

Posted by jpluimers on 2020/05/28

Cool stuff: TOP 10 CD/DVD/Floppy Drives based Projects – YouTube.

Via:

–jeroen

Read the rest of this entry »

Posted in Development, Hardware Development, LifeHacker, Power User | Leave a Comment »

GitHub – dschmenk/apple2pi: Apple II client/server for Raspberry Pi

Posted by jpluimers on 2020/05/28

[WayBack] GitHub – dschmenk/apple2pi: Apple II client/server for Raspberry Pi: hybrid computer of a Raspberry Pi inside an Apple II (either ][, or ][+, or //e) so the Apple II can be a front-end to the Raspberry Pi which then can run an Apple IIGS emulator, talk to the Apple II storage hardware and much more.

It can run [WayBack] RASPPLE II: A2CLOUD, A2SERVER, Apple II Pi for Raspberry Pi

Lot’s of videos below, all by David Schmenk https://www.youtube.com/user/dschmenk/videos

Via:

–jeroen

 

 

Posted in *nix, *nix-tools, //e, 6502, Apple, Apple ][, Development, Hardware Development, Hardware Interfacing, History, Power User, Raspberry Pi, USB | Leave a Comment »

Best android apps for zabbix – AndroidMeta

Posted by jpluimers on 2020/05/28

If I land a project using Zabbix again, one of the things I need to look into is [WayBack] Best android apps for zabbix – AndroidMeta.

–jeroen

Posted in *nix, Android, Android Devices, Development, Linux, Mobile Development, Monitoring, Power User, Zabbix | Leave a Comment »

Davidlohr Bueso on Twitter: A programmer had a problem. He thought to himself, “I know, I’ll solve it with threads!”. has Now problems. two he

Posted by jpluimers on 2020/05/27

When doing multi-threading, I’m always reminded of [WayBack/Archive.is] Davidlohr Bueso on Twitter: A programmer had a problem. He thought to himself, “I know, I’ll solve it with threads!”. has Now problems. two he

Even with the advent of multi-core architectures long behind us (multi core hardware has been in a mature state for a long time), software for it often is not.

It is not just that programmers are not ready to do it (indeed often they are not: multi-threading is hard), but also that many pieces of software run perfectly fine in a single thread.

So when you do want to implement multi-threading, think twice.

It is one of the reasons I ported a C# version of the Deadlock Empire game (written in HTML + JavaScript) to generate Delphi code and examples. I was really glad that Dalija Prasnikar pointed to it in [WayBack] What is thread safety anyway?, and also pointed to the very important [WayBack] What is this thing you call “thread safe”? – Fabulous Adventures In Coding.

That last one stresses that multi-threading has vague definitions. It will stay vague because the problems you can encounter are virtually endless. There is no silver bullet: Lars Fosdal made this really nice remark in [WayBack] Multithreading can be hard to do right… – Dalija Prasnikar – Google+:

Locking too much is even worse than locking too little. It is very easy to deadlock with overly detailed locking. Applying locking in the wrong place, can serialize threads through a lock bottleneck.

Learning multithreading is a long series of mistakes that you probably can’t avoid, even if told about them up front. You are probably best off having to make the mistakes yourself and then learn from them ;)

To which Asbjørn Heid added:

… after a while I came to the realization that recursive locks are evil. They make it so easy to “just lock everything”. In contrast, non-recursive locks forces you to have explicit “thread-safety borders” in your code. And such borders really leads to better designs.

Here are the games:

Related:

–jeroen

 

 

Posted in Conference Topics, Conferences, Development, Event, Multi-Threading / Concurrency, Software Development | Leave a Comment »

Need to look at monospaced programmers fonts again

Posted by jpluimers on 2020/05/27

At the time of looking, FiraCode would not work in Delphi but would in Visual Studio. Reminder for me to look at it again: [WayBack] GitHub – tonsky/FiraCode: Monospaced font with programming ligatures.

A cool feature of the font is that it has ligatures for common multi-character combinations like := or ...

Back when scheduling this, I was still at Lucida Console because of its large x-height and small line spacing.

It is time to revisit my font choice, so lets include at least these candidates:

–jeroen

related:

Edit 20200527: observations by Uwe Schuster

Posted in .NET, Delphi, Development, Font, Power User, Programmers Font, Software Development, Visual Studio 2015, Visual Studio and tools, vscode Visual Studio Code | Leave a Comment »

Beyond console.log() – Matt Burgess – Medium

Posted by jpluimers on 2020/05/26

Not yet structured logging, but it brings more structure to your console.log() output:

There is more to debugging JavaScript than console.log to output values. It might seem obvious I’m going to pimp the debugger, but…

[WayBack]: Beyond console.log() – Matt Burgess – Medium

Via: [WayBack] Really useful article for #JavaScript developers: Going beyond #console.log for #debugging and #logging. Some gold i nthis article that may just save yo… – Jason Mayes – Google+

–jeroen

Posted in Development, JavaScript/ECMAScript, Scripting, Software Development, Web Development | Leave a Comment »

How to move Git submodule to sub-directory? – Stack Overflow

Posted by jpluimers on 2020/05/26

It’s a few steps as per [WayBack] How to move Git submodule to sub-directory? – Stack Overflow, so I’m not sure it is the best solution, but it at least works (thanks Philzen):

Had the same problem just the moment ago and ended up deleting the submodule reference (as outlined in this article) and recreating it where i wanted it to go.

To follow your example of moving submodule jquery into repos/jquery

  1. Delete the (typically three lines) submodule reference from .gitmodules.
  2. Check .git/config for references to the submodule and remove them, if existent
  3. do git rm --cached jquery to cut the submodule reference out of the repository
  4. remove the old submodule folder
  5. recreate you submodule reference (as you possibly did before) with git submodule add git://github.com/jquery/jquery.git repos/jquery

In case your submodule was set to specific tag, respectively commit (which you’ll surely have in a stable project) you will have set it again.

Due to this complex process i am strongly hoping there is (or will be, at least on the git roadmap) a more straightforward way of achieving this. If not, surely some scripts could be fumbled together to do this quicker…

References:

–jeroen

Posted in Development, DVCS - Distributed Version Control, git, Software Development, Source Code Management | Leave a Comment »

Jeroen Pluimers on Twitter: “Hi dpi is a mess, not just on Windows. It will take considerable time to overcome the decades long Pixel mess we’ve been coming from (:”

Posted by jpluimers on 2020/05/26

Two years later, it is a reminder to look at my statement again: [WayBack] Jeroen Pluimers on Twitter: “Hi dpi is a mess, not just on Windows. It will take considerable time to overcome the decades long Pixel mess we’ve been coming from (:”

–jeroen

Posted in Apple, Development, Mac OS X / OS X / MacOS, Power User, Software Development, Windows | Leave a Comment »

When NTFS shrink fails, despite using the default settings from the shrink dialog

Posted by jpluimers on 2020/05/25

Sometimes an NTFS shrink still fails, even though you use the built in Windows defragmentation tools, of SysInternals contig tool.

The best you can do is to follow the steps in:

  1. run diskmgmt.msc to try shrinking the disk, then often it is already in the error message: “You can’t shrink a volume beyond the point where any unremoveable files are located see the defrag event in application log for detailed information about the operation when it has completed.”
  2. use eventvwr.exe and look at the Windows Logs for the most recent Application entries that has Source set to defrag

Those defrag entries usually tell about the last file that could not be moved.

You can use wevtutill to query events on the commandline.

Note that contrary to [WayBack] WEVTUTIL – Windows CMD – SS64.com documentation, the option /rd cannot be expanded to /reversedirection , as you will get an error “invalid option reversedirection” – Google Search.

For querying the above defrag event, use this command line (replace /format:XML with /format:text for more readable but also more verbose output):

wevtutil query-events Application /count:2 /format:XML /rd:true /query:"*[System[(EventID=259)]]"

On Windows 10, this is often caused by “System Protection” which locks files under C:\Recovery, but I have also seen $BITMAP, $MFT and $DATA entries.

System protected drives

To view which drives are currently used for system protection (this opens the “System Properties” dialog focussed on the “System Protection” tab):

SystemPropertiesProtection.exe

To disable it for one drive:

Disable-ComputerRestore -Drive "C:"

To enable it for one drive:

Enable-ComputerRestore -Drive "C:"

There seems to be no easy one-command PowerShell way to view the drives have ComputerRestore enabled, as this does not show drive letters:

PowerShell Get-ComputerRestorePoint ^| Format-List

The above gives more detailed output than a plain PowerShell Get-ComputerRestorePoint

Deleting restore points

PowerShell does not have a built-in option to delete restore points, but vssadmin has, but calls them “shadows”.

First list them:

vssadmin list shadows

Then delete them (but be aware this will not prompt for confirmation because of the /quiet):

vssadmin delete shadows /for=C: /quiet

You can also delete them for all drives (this will not prompt for confirmation either):

vssadmin delete shadows /all /quiet

Stopping the volume shadow copy service:

net stop vss

Managing hibernation and page file

Hibernation:

powercfg.exe /hibernate off

powercfg.exe /hibernate on

Page file:

wmic pagefile list /format:list
AllocatedBaseSize=2944
CurrentUsage=0
Description=C:\pagefile.sys
InstallDate=20181018215808.683376+120
Name=C:\pagefile.sys
PeakUsage=0
Status=
TempPageFile=FALSE

wmic computersystem where name="%computername%" get AutomaticManagedPagefile
AutomaticManagedPagefile
TRUE

wmic computersystem where name="%computername%" set AutomaticManagedPagefile=False
Updating property(s) of '\\MYCOMPUTER\ROOT\CIMV2:Win32_ComputerSystem.Name="LAPTOPUW08"'
Property(s) update successful.

wmic computersystem where name="%computername%" get AutomaticManagedPagefile
AutomaticManagedPagefile
FALSE

wmic.exe pagefileset where name="C:\\pagefile.sys" delete
Deleting instance \\MYCOMPUTER\ROOT\CIMV2:Win32_PageFileSetting.Name="C:\\pagefile.sys"
Instance deletion successful.

Sometimes the deletion does not work (see below for workaround):

wmic pagefile list /format:list

AllocatedBaseSize=2944
CurrentUsage=0
Description=C:\pagefile.sys
InstallDate=20181018215808.683376+120
Name=C:\pagefile.sys
PeakUsage=0
Status=
TempPageFile=FALSE

Do not do this:

wmic pagefile delete
Deleting instance \\MYCOMPUTER\ROOT\CIMV2:Win32_PageFileUsage.Name="C:\\pagefile.sys"
ERROR:
Description = Provider is not capable of the attempted operation

wmic pagefileset set name="c:\\pagefile.sys",InitialSize=0,MaximumSize=0
No Instance(s) Available.

Sometimes it still fails, so then you have to use the UI:

  1. Run SystemPropertiesAdvanced.exe
  2. Under Performance, click on Settings
  3. Click the Advanced tab
  4. Under Virtual memory, click the Change button
  5. Ensure Automatically manage page file size for all drives is disabled
  6. Ensure No paging file is selected
  7. Click the Set button
  8. Confirm you really want no page file
  9. Press on the three OK buttons to fully leave the Advanced System Properties dialog.
  10. Reboot

After resizing the disk, reverse the steps:

  1. Run SystemPropertiesAdvanced.exe
  2. Under Performance, click on Settings
  3. Click the Advanced tab
  4. Under Virtual memory, click the Change button
  5. Ensure Automatically manage page file size for all drives is enabled
  6. Confirm you really want no page file
  7. Press on the three OK buttons to fully leave the Advanced System Properties dialog.
  8. Reboot

Bitmap file

Sometimes the file blocking the resize is the NTFS "\$BitMap::$DATA", which few defragmentation tools can move as it is the MFT Bitmap.

Background reading

–jeroen

Posted in CommandLine, Console (command prompt window), Development, Power User, PowerShell, PowerShell, Scripting, Software Development, Windows | Leave a Comment »

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