February 2019
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Archive for February, 2019

Windows 7..10: disable shutdown/hibernate/sleep/restart from UI

Posted by jpluimers on 2019/02/18

I needed this for the Windows 10 machine of my mentally retarded brother: WoL (wake-on LAN) for his machine always works when it is in sleep or deep sleep mode, not every now and then fails when fully powered off.

After it is disabled in the UI, you can still perform it with [WayBack] shutdown.exe, so I added these shortcuts first:

shutdown /r /t 0 for “reboot”
shutdown /h /f for “sleep” (note: this does not accept /t 0 as it is implied)
for Windows versions not supporting this switch, you can try [WayBack] PsShutdown – Windows Sysinternals | Microsoft Docs
Do not ever call PowerProf.dll from rundll32.exe (thanks [WayBack] grawity for pointing that out in [WayBack] windows 7 – Sleep shortcut in win7 – Super User)
- psshutdown.exe -d -t 0 (Suspend)
- psshutdown.exe -h -t 0 (Hibernate)
- psshutdown.exe -s -t 0 (Shutdown without poweroff)
- psshutdown.exe -d -t 0 (Poweroff)

Disabling the Shutdown related actions in the UI consists of two steps:

Removing it from the logon screen using the registry
Removing it from the user using gpedit.msc (which is wrapped in mmc.exe)

I will try to get the registry changes for the second using [WayBack] RegFromApp – Generate RegEdit .reg file from Registry changes made by application (thanks [WayBack] magicandre1981 for suggesting that at [WayBack] windows – How can I use Process Monitor to detect register changes made by GPEdit modifications? – Super User).
The wrapping mmc.exeis easiest to obtain using Process Explorer, and RegFromApp likely needs to run in elevated mode.

If that fails, I can try Process Monitor as suggested by [WayBack] Tom Wijsman in [WayBack] command line – Change group policy using windows CMD – Super User.

The reason for the above is that I want to avoid UI based modifications that are hard to script.

Remove Shutdown options from the logon screen

This is just the registry setting below.

It also removes the reboot/hibernate/sleep options from the logon screen, so you need shortcuts for that.

Remove Shutdown for the regular users UI

This can be done using either gpedit.msc (Group Policy Editor) drilling down to the local policies or secpol.msc (the Local Policy Editor):

Drill down to
1. Local Policies
2. User Rights Management
Double click Shut down the system
Remove the groups you don’t want the system to shutdown
Press OK to confirm

See the video below how.

I’ve removed the group Users and kept the group Administrators to allow ShutDown.

Administrators now do need to execute the above commands (for instance shutdown.exe /h /f) in with an UAC administrative token enabled!

If you do not want that, add the users that can perform Shutdown commands to a new group, then aadd that group to Shutdown the system.

If you want to perform this system wide for all users, then it’s faster to change the [WayBack] Windows Explorer NoClose policy (see also [WayBack] Group Policy Registry Reference).

Read the rest of this entry »

Posted in Ethernet, Network-and-equipment, Power User, Wake-on-LAN (WoL), Windows | Leave a Comment »

Windows <= 10: batch file to open Windows Update panel

Posted by jpluimers on 2019/02/15

Up until Widows 8.1, you could use wuapp to start the Windows Update panel.

For a while, Windows 10 needed a cumbersome language specific workaround described at Windows 10 – language neutral batch file to start Windows.

That stopped working after a few builds, but I forgot to make a note in which build exactly. Already in Windows 10 build 10122, the icon in wucltux.dll, so this might have been shortly after the initial “RTM” (retroactively named 1507).

So for a while, I had this batch file:

Since then I had to maintain too many locales running Windows 10. So here is the batch file:
for /f "delims=" %%A in ('PowerShell -Command "(Get-Culture).Name"') do explorer "%LocalAppData%\Packages\windows.immersivecontrolpanel_cw5n1h2txyewy\LocalState\Indexed\Settings\%%A\AAA_SystemSettings_MusUpdate_UpdateActionButton.settingcontent-ms"
It uses these tricks:

Set output of a command as a variable (in this case a for loop variable)

Execute PowerShell script in a .bat file

PowerShell Get-Culture (which gets a .NET CultureInfo instance)

CultureInfo.Name property (which has the nl-NL, en-US, etc codes in it)

But now I have extended it to support old and new Windows versions:

if exist %windir%\System32\wuapp.exe (
  %windir%\System32\rundll32.exe url.dll,FileProtocolHandler wuapp.exe
) else (
  %windir%\explorer ms-settings:windowsupdate
)

–jeroen

via: Windows Update Shortcut – Create in Windows 10 – Windows 10 Forums

Posted in Batch-Files, Development, Power User, Scripting, Software Development, Windows | Leave a Comment »

To celebrate his 85th birthday, some links to interviews with Niklaus Wirth interviews

Posted by jpluimers on 2019/02/15

Today, Niklaus Wirth, “father” of The Pascal Programming Language turned 85.

Happy birthday!

Almost 50 years ago, Niklaus Wirth submitted his famous paper “The Programming Language Pascal” which was published early 1971

Luckily it is archived on both the WayBack machine and Archive.is as the only PDF copy I could find on-line isn’t always on-line: http://oberoncore.ru/_media/library/wirth_the_programming_language_pascal.pdf

Originally it was published by Niklaus Wirth in Acta Informatica, Vol. 1, Fasc. 1, 1971 pp. 35-63

He has been very active, just browse through the [WayBack] List of computer science publications by Niklaus Wirth

To celebrate his birthday, here are some interviews with him:

If you like the ones above as much as I do, then search for more: there are plenty!

–jeroen

via: Happy 80th birthday Niklaus Wirth! « The Wiert Corner – irregular stream of stuff

Read the rest of this entry »

Posted in Delphi, Development, History, Pascal, Software Development | Leave a Comment »

VNC, Windows and UAC prompts

Posted by jpluimers on 2019/02/15

Since I needed to maintain a Windows PC behind a VPN connection via the console (so not via RDP sessions) including installation of software, I needed a (preferably free or open source) solution supporting elevation through UAC (User Account Control).

For a good description of differences between RDP and VNC, see [WayBack] remote desktop – TightVNC while an RDP session is running – Super User by [WayBack] User Canadian Luke.

Of the many non functional search results, the one suggesting running UltraVNC as a service is the one that really worked: [WayBack] If you install UltraVNC as a service, you can see the UAC notifications and press the buttons… VNC on windows 7 with administrator rights – Super User.

I only needed the “Ultra VNC Server Silent” installation (see screenshot below).
Run the UltraVNC settings (default location for the settings application is C:\Program Files\uvnc bvba\UltraVNC\uvnc_settings.exe)
1. In the Security tab, be sure to set good passwords for read/write access (VNC Password) and read-settings (View-Only password)
2. In the Service tab, ensure the service is installed and if it is stop+start the service
Optionally ensure a TLS or SSH tunnel (as by default ports 5900 and 5800 are unencrypted)
- I need to research this further, as there seems to be a plugin possibility.

Now I can use Screen Sharing on my Mac to access the machine via a VPN over the VNC protocol. Combined with a Wake On LAN feature in the remote network, this works splendid.

Read the rest of this entry »

Posted in Power User, Remote Desktop Protocol/MSTSC/Terminal Services, Windows | Leave a Comment »

Anonymous method do location capturing, so when you expect value capturing you get the “Mysterious Case Of Wrong Value”

Posted by jpluimers on 2019/02/14

Interesting read [WayBack] Mysterious Case Of Wrong Value.

In order to capture by value (which in C++ you can specify), you need an intermediate function like Dalija describes:

function CreateFunction(Value: Integer): TFunc<Integer>;
begin
  Result :=
    function: Integer
    begin
      Result := Value;
    end;
end;

Via: [WayBack] Dalija Prasnikar – Google+

–jeroen

Posted in Delphi, Development, Software Development | Leave a Comment »

Follow up on “btrfs free space. It’s complicated. Still.”

Posted by jpluimers on 2019/02/14

In the mean time I’ve made a bit of progress on btrfs free space. It’s complicated. Still.

Let me start with an example system that has details further below.

total of quotas is slightly more than 1.1 Gibibyte
- Sometimes this helps making the quota list better:
  btrfs quota rescan /
the disk partition itself is 10 Gibibyte
btrfs indicates there is 6.6 Gibibyte used
df indicates there is 11 Gigabyte total, 6.9 Gigabyte used and 2.6 Gigabyte available.

In short: the used 6.6 Gibibyte (which matches 6.9 Gigabyte) does not match the 11 Gibibyte. A situation very similar to [WayBack] Disk usage is more than double the snapshots exclusive data — Linux BTRFS.

Reminder to self: try bedup that is supposed to deduplicate btrfs data: [WayBack] Re: Disk usage is more than double the snapshots exclusive data — Linux BTRFS

Repository g2p/bedup: Btrfs deduplication

Not sure which package is needed (bedup, python3-bedup nor burp are found)

I need to check out on de-duplication (as I know this particular machine has quite a bit of duplicate data).

But first lets get the size down a bit with this series of commands:

sftp-host:~ # btrfs balance start -dusage=0 -musage=0 /
Done, had to relocate 0 out of 18 chunks
sftp-host:~ # btrfs balance start -dusage=10 -musage=10 /
Done, had to relocate 1 out of 18 chunks
sftp-host:~ # btrfs balance start -dusage=20 -musage=20 /
Done, had to relocate 1 out of 18 chunks
sftp-host:~ # btrfs balance start -dusage=30 -musage=30 /
Done, had to relocate 2 out of 18 chunks
sftp-host:~ # btrfs balance start -dusage=40 -musage=40 /
Done, had to relocate 1 out of 17 chunks
sftp-host:~ # btrfs balance start -dusage=50 -musage=40 /
Done, had to relocate 2 out of 17 chunks
sftp-host:~ # btrfs balance start -dusage=60 -musage=40 /
Done, had to relocate 2 out of 17 chunks
sftp-host:~ # btrfs balance start -dusage=60 -musage=60 /
sftp-host:~ # btrfs filesystem show
Label: none  uuid: 6492a1c6-5fbc-4938-bf11-57d6194e6b8f
    Total devices 1 FS bytes used 6.61GiB
    devid    1 size 10.00GiB used 8.88GiB path /dev/sda2

sftp-host:~ # btrfs filesystem df /
Data, single: total=7.82GiB, used=6.35GiB
System, DUP: total=32.00MiB, used=16.00KiB
Metadata, DUP: total=512.00MiB, used=263.47MiB
GlobalReserve, single: total=22.67MiB, used=0.00B

Compare this to the initial situation:

sftp-host:~ # btrfs filesystem show
Label: none  uuid: 6492a1c6-5fbc-4938-bf11-57d6194e6b8f
    Total devices 1 FS bytes used 6.61GiB
    devid    1 size 10.00GiB used 10.00GiB path /dev/sda2

sftp-host:~ # btrfs filesystem df /
Data, single: total=8.94GiB, used=6.35GiB
System, DUP: total=32.00MiB, used=16.00KiB
Metadata, DUP: total=512.00MiB, used=264.27MiB
GlobalReserve, single: total=23.48MiB, used=0.00B

Now you see that:

far less of the partition is actually used by the filesystem (was 10 Gibibyte, now 8.88 Gibibyte)
far less storage is needed for the data (was 8.94 Gibibyte, now 7.82 Gibibyte to store 6.35 Gibibyte)

If the above succeeds

Continue with steps closer to 99 (which is a percentage) and if that succeeds try this:

btrfs balance start --full-balance /

In my experience it needs at least 60% free dh -f disk space to run to completion. If it fails, it’s no problem: it merges the final almost full blocks. But those blocks will be split soon anyway because of file system write activity.

Nicer overview

You can even get a nicer view by executing btrfs filesystem usage -T / (which I did after continuing up to 99):

Overall:
    Device size:          10.00GiB
    Device allocated:          8.22GiB
    Device unallocated:        1.78GiB
    Device missing:          0.00B
    Used:              7.00GiB
    Free (estimated):          2.72GiB  (min: 1.83GiB)
    Data ratio:               1.00
    Metadata ratio:           2.00
    Global reserve:       24.55MiB  (used: 48.00KiB)

             Data    Metadata  System              
Id Path      single  DUP       DUP      Unallocated
-- --------- ------- --------- -------- -----------
 1 /dev/sda2 7.41GiB 768.00MiB 64.00MiB     1.78GiB
-- --------- ------- --------- -------- -----------
   Total     7.41GiB 384.00MiB 32.00MiB     1.78GiB
   Used      6.47GiB 269.88MiB 16.00KiB

If the above fails

Three things to try now:

Try to start with lower values of -dusage and -musage.
Split-dusage and -musage in different btrfs balance start commands.
Try to remove any snapper snapshots that you do not need. (you can delete ranges using snapper, see [Wayback/Archive] How to delete disk snapshots in SUSE)

Log:

sftp-host:~ # df -h
Filesystem      Size  Used Avail Use% Mounted on
devtmpfs        176M     0  176M   0% /dev
tmpfs           182M     0  182M   0% /dev/shm
tmpfs           182M  868K  181M   1% /run
tmpfs           182M     0  182M   0% /sys/fs/cgroup
/dev/sda2        11G  6.9G  2.6G  73% /
/dev/sda2        11G  6.9G  2.6G  73% /var/spool
/dev/sda2        11G  6.9G  2.6G  73% /tmp
/dev/sda2        11G  6.9G  2.6G  73% /boot/grub2/i386-pc
/dev/sda2        11G  6.9G  2.6G  73% /boot/grub2/x86_64-efi
/dev/sda2        11G  6.9G  2.6G  73% /var/crash
/dev/sda2        11G  6.9G  2.6G  73% /var/lib/named
/dev/sda2        11G  6.9G  2.6G  73% /var/opt
/dev/sda2        11G  6.9G  2.6G  73% /var/lib/mailman
/dev/sda2        11G  6.9G  2.6G  73% /var/tmp
/dev/sda2        11G  6.9G  2.6G  73% /var/log
/dev/sda2        11G  6.9G  2.6G  73% /var/lib/pgsql
/dev/sda2        11G  6.9G  2.6G  73% /var/lib/machines
/dev/sda2        11G  6.9G  2.6G  73% /srv
/dev/sda2        11G  6.9G  2.6G  73% /usr/local
/dev/sda2        11G  6.9G  2.6G  73% /opt
/dev/sda2        11G  6.9G  2.6G  73% /.snapshots
/dev/sda3       5.5G   36M  5.5G   1% /home
tmpfs            37M     0   37M   0% /run/user/1000
sftp-host:~ # btrfs filesystem show
Label: none  uuid: 6492a1c6-5fbc-4938-bf11-57d6194e6b8f
    Total devices 1 FS bytes used 6.61GiB
    devid    1 size 10.00GiB used 10.00GiB path /dev/sda2

sftp-host:~ # btrfs filesystem df /
Data, single: total=8.94GiB, used=6.35GiB
System, DUP: total=32.00MiB, used=16.00KiB
Metadata, DUP: total=512.00MiB, used=264.27MiB
GlobalReserve, single: total=23.48MiB, used=0.00B
sftp-host:~ # btrfs qgroup show /
qgroupid         rfer         excl 
--------         ----         ---- 
0/5          16.00KiB     16.00KiB 
0/257         1.05MiB      1.05MiB 
0/258         2.55GiB     51.11MiB 
0/259         2.36MiB      2.36MiB 
0/260        16.00KiB     16.00KiB 
0/261        16.00KiB     16.00KiB 
0/262        16.00KiB     16.00KiB 
0/263        36.00KiB     36.00KiB 
0/264        16.00KiB     16.00KiB 
0/265        16.00KiB     16.00KiB 
0/266        16.00KiB     16.00KiB 
0/267        16.00KiB     16.00KiB 
0/268        16.00KiB     16.00KiB 
0/269       533.83MiB    533.83MiB 
0/270        16.00KiB     16.00KiB 
0/271        48.00KiB     48.00KiB 
0/272        16.00KiB     16.00KiB 
0/289        16.00KiB     16.00KiB 
0/401         2.80GiB    396.91MiB 
0/402         2.55GiB      9.57MiB 
0/403         2.55GiB     12.91MiB 
0/404         2.54GiB    676.00KiB 
0/405         2.54GiB    660.00KiB 
0/406         2.81GiB     60.34MiB 
0/407         2.55GiB      8.66MiB 
0/408         2.55GiB      4.57MiB 
0/409         2.56GiB     24.31MiB 
0/410         2.55GiB      7.28MiB 
0/411         2.57GiB     20.55MiB 
255/289      16.00KiB     16.00KiB 
sftp-host:~ # !~
~/Versioned/btrfs-size/btrfs-size.sh 
===============================================================================================
Snapshot / Subvolume                                               ID   Total    Exclusive Data
===============================================================================================
257 gen 505741 top level 5 path .snapshots                         257  1.05MB   1.05MB   
258 gen 505796 top level 257 path .snapshots/1/snapshot            258  2.55GB   51.11MB  
259 gen 505736 top level 5 path boot/grub2/i386-pc                 259  2.36MB   2.36MB   
260 gen 452028 top level 5 path boot/grub2/x86_64-efi              260  16.00KB  16.00KB  
261 gen 452028 top level 5 path opt                                261  16.00KB  16.00KB  
262 gen 505720 top level 5 path srv                                262  16.00KB  16.00KB  
263 gen 505791 top level 5 path tmp                                263  36.00KB  36.00KB  
264 gen 505717 top level 5 path usr/local                          264  16.00KB  16.00KB  
265 gen 452028 top level 5 path var/crash                          265  16.00KB  16.00KB  
266 gen 452028 top level 5 path var/lib/mailman                    266  16.00KB  16.00KB  
267 gen 452028 top level 5 path var/lib/named                      267  16.00KB  16.00KB  
268 gen 452028 top level 5 path var/lib/pgsql                      268  16.00KB  16.00KB  
269 gen 505795 top level 5 path var/log                            269  533.83MB 533.83MB 
270 gen 452028 top level 5 path var/opt                            270  16.00KB  16.00KB  
271 gen 505796 top level 5 path var/spool                          271  48.00KB  48.00KB  
272 gen 505771 top level 5 path var/tmp                            272  16.00KB  16.00KB  
289 gen 452028 top level 5 path var/lib/machines                   289  16.00KB  16.00KB  
401 gen 451786 top level 257 path .snapshots/92/snapshot           401  2.81GB   396.91MB 
402 gen 465358 top level 257 path .snapshots/93/snapshot           402  2.55GB   9.57MB   
403 gen 465363 top level 257 path .snapshots/94/snapshot           403  2.55GB   12.91MB  
404 gen 471598 top level 257 path .snapshots/95/snapshot           404  2.54GB   676.00KB 
405 gen 471603 top level 257 path .snapshots/96/snapshot           405  2.54GB   660.00KB 
406 gen 471658 top level 257 path .snapshots/97/snapshot           406  2.81GB   60.34MB  
407 gen 487231 top level 257 path .snapshots/98/snapshot           407  2.55GB   8.66MB   
408 gen 490073 top level 257 path .snapshots/99/snapshot           408  2.55GB   4.57MB   
409 gen 490081 top level 257 path .snapshots/100/snapshot          409  2.56GB   24.31MB  
410 gen 505715 top level 257 path .snapshots/101/snapshot          410  2.55GB   7.28MB   
411 gen 505739 top level 257 path .snapshots/102/snapshot          411  2.57GB   20.55MB  
===============================================================================================
                                                                Exclusive Total: 1.11GB    
sftp-host:~ #

–jeroen

Posted in *nix, *nix-tools, btrfs, File-Systems, Power User | Leave a Comment »

Ancient Unix based keyboard shortcuts

Posted by jpluimers on 2019/02/14

Somehow I’ve been doing Unix like work off and on for most of my life. So I know many ancient shell shortcuts (like Ctrl-E for end-of-line and Ctrl-A for start-of-line) by heart.

Many don’t, or even list shortcuts as if they are for the shell, but in fact aren’t.

So here are some links that distinguish between various kinds of keyboard shortcuts and give some insight in the history of these shortcuts (that go back into the 1970s, yes I’m that old).

[WayBack] Keyboard shortcuts – ArchWiki has a nice distinction of the various kinds of shortcuts:
- 1.1Kernel
- 1.2Terminal
  - 1.2.1Virtual console
  - 1.2.2Readline
[WayBack]: Table of keyboard shortcuts – Wikipedia: Command line shortcuts which has a table comparing between shells of various operating systems.
[WayBack] bash – Why is the shortcut Ctrl + A jumping to the start of a line in the terminal? – Unix & Linux Stack Exchange (lots of history by [WayBack] mr-spuratic).

–jeroen

via:

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

VCL Root units

Posted by jpluimers on 2019/02/13

Delphi VCL units that are not using any other VCL units:

Vcl.Bind.Consts
Vcl.Consts
Vcl.ComStrs
Vcl.HtmlHelpViewer
Vcl.IdAntiFreeze
Vcl.Imaging.GIFConsts
Vcl.Imaging.JConsts
Vcl.Imaging.pnglang
Vcl.OleConst
Vcl.ShellAnimations
Vcl.Shell.ShellConsts
Vcl.Touch.GestureConsts
Vcl.Touch.KeyboardTypes
Vcl.VDBConsts
Vcl.XPMan

–jeroen

Posted in Delphi, Development, Software Development | Leave a Comment »

Accessing storage (NAS) over the Internet via FTP | FRITZ!Box 7490 | AVM International

Posted by jpluimers on 2019/02/13

Of course you don’t want this. So by the time you read this, the connection has been closed.

For testing some Internet of Shit stuff from a client that cannot do SFTP, I needed a temporary FTP accessible connection.

These links helped:

TL;DR:

Preparing the USB stick:
1. Ensure the USB disk is FAT/FAT32/NTFS
2. Create a directory in the root of the USB disk for the FTP user (for now: FtpDirectory)
3. Insert the USB disk in the Fritz!Box
Logon to the Fritz!Box web UI
1. Configure a user for FTP:
  1. In the menu, go to System, then FRITZ!Box Users
  2. Click Add user
  3. Name the user (for now: MyFtpUser)
  4. Ensure that user *only* has a checkmark for `Access to NAS contents`
  5. Click the button Add directory
  6. In the popup click Select folder
  7. Choose the FtpDirectory you just made
  8. Click OK
  9. Ensure the read and write checkboxes are enabled
  10. Click OK
2. Configure the USB stick for FPT access
  1. In the menu, go to Home Network, then USB Devices
  2. Observe if the device is visible and has the correct file system (if not: ask AVM)
  3. In the menu, go to Internet, then Permit Access
  4. Click on the FRITZ!Box Services
  5. Ensure there is a checkmark at Internet access to your storage media via FTP/FTPS enabled
  6. At TCP Port for FTP/FTPS, fill in 21 (many IoT devices cannot use a different port)
  7. Ensure there is *no* checkmark at Allow only secure FTP connections (FTPS)
  8. Make a note of the value after FTP address (something like ftp://example.org:21`)
  9. Click Apply
Test

–jeroen

Posted in Communications Development, Development, Fritz!, Fritz!Box, FTP, Internet protocol suite, IoT Internet of Things, Network-and-equipment, Power User, Software Development, TCP | Leave a Comment »

web based tools to simulate electronics

Posted by jpluimers on 2019/02/13

Via seedstudio, I bumped into EasyEDA – Wikipedia. It seems there are a lot of on-line tools that allow you to draw and often simulate electronics.

Time to put them on my list of stuff to play around with:

EasyEDA – Online PCB design & circuit simulator
Bring ideas to life with free online Arduino simulator and PCB apps | Autodesk Circuits (requires logon)
[WayBack] 10 Circuit Design Simulation Apps for Pros & DIYers | EE Times (about half of them web-based or browser-based, but they didn’t include EasyEDA) the ones that are:
- circuits.io
- circuitlab.com
- docircuits.com
- partsim.com

Circuitlab also has a nice free interactive book: [WayBack] “Ultimate Electronics” Book – CircuitLab A free interactive electronics textbook, “Ultimate Electronics”

Later – via issue #1 of [WayBack] HackSpace magazine: The new magazine for the modern maker – I also found out about Fritzing which is off-line native software that I want to check out as it is open source:

[Archive.is] Fritzing

It helps a lot knowing there are various Electronic symbol – Wikipedia: Standards for symbols, covering much more than the one below:

To make it easier, power supplies have a host of different symbols for the same things. For instance, DC can have 3 or more different symbols. [WayBack] Electric Current Symbols

–jeroen

Posted in Development, Hardware Development | Leave a Comment »

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Archive for February, 2019

Windows 7..10: disable shutdown/hibernate/sleep/restart from UI

Remove Shutdown options from the logon screen

Remove Shutdown for the regular users UI

Windows <= 10: batch file to open Windows Update panel

To celebrate his 85th birthday, some links to interviews with Niklaus Wirth interviews

VNC, Windows and UAC prompts

Anonymous method do location capturing, so when you expect value capturing you get the “Mysterious Case Of Wrong Value”

Follow up on “btrfs free space. It’s complicated. Still.”

If the above succeeds

Nicer overview

If the above fails

Log:

Ancient Unix based keyboard shortcuts

VCL Root units

Accessing storage (NAS) over the Internet via FTP | FRITZ!Box 7490 | AVM International

web based tools to simulate electronics

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

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Archive for February, 2019

Remove Shutdown options from the logon screen

Remove Shutdown for the regular users UI

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If the above succeeds

Nicer overview

If the above fails

Log:

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