Posted by jpluimers on 2017/01/20
There are lots of old copies floating around from the Linux Storage Stack Diagram – Thomas-Krenn-Wiki.
The above link has the up-to-date version and larger versions in PNG, SVG and PDF so be sure to check it out.
The old URL was http://www.thomas-krenn.com/en/oss/linux-io-stack-diagram.html – it now redirects to the above one.
Some older copies that got me looking for the new one:
–jeroen
Posted in *nix, Linux, Power User | Leave a Comment »
Posted by jpluimers on 2017/01/20
For my Link Archive via linux port forwarding to external ip – Google Search:
Need to look at this more closely, but it looks like you need PREROUTING, FORWARD and POSTROUTING and two NATs (DNAT and SNAT), as this graph from Port Forwarding Using iptables – SysTutorials shows:
PACKET IN
|
PREROUTING--[routing]-->--FORWARD-->--POSTROUTING-->--OUT
- nat (dst) | - filter - nat (src)
| |
| |
INPUT OUTPUT
- filter - nat (dst)
| - filter
| |
`----->-----[app]----->------'
–jeroen
Posted in *nix, *nix-tools, Internet, Internet protocol suite, iptables, Linux, openSuSE, Power User, routers, SuSE Linux, TCP | Leave a Comment »
Posted by jpluimers on 2017/01/19
I had this error when building my Delphi app and needing detailed MAP files.
Somehow, then Delphi also tries to generate .drc files and fails.
Performing the “F2039 Could not create output file” drc – Google Search didn’t reveal much.
So I fired up Process Monitor and looked for file access patterns (see dump below), that all were OK.
Then I opened Windows Explorer and saw freshly generated .DRC files marked as some type of VLC Player file. I’ve had loads of trouble with VLC in the past, but I inherited this PC so I didn’t notice VLC Player was installed by the previous developer.
Lesson learned: when starting a gig, always request a fresh PC
So I uninstalled VLC Player and now everything works fine.
Oh btw: .DRC files are Delphi Resource String files.
–jeroen
Posted in Delphi, Delphi 2007, Development, Software Development | 4 Comments »
Posted by jpluimers on 2017/01/18
Found as a byproduct of following +Jeroen Wiert Pluimers …:
Which is a cool site:
Examples of common UI elements and interactions with HTML and CSS alone.
Source: You Might Not Need JavaScript
–jeroen
Posted in CSS, Development, HTML, HTML5, JavaScript/ECMAScript, Scripting, Software Development, Web Development | Leave a Comment »
Posted by jpluimers on 2017/01/18
How good is this?
Access Secret Server using Web Services: mobile apps, third party applications, and scripts (with the proper authentication).
Source: API Web Services, integration with third party applications, Secret Server | Thycotic
I bumped into this after searching for winauthwebservices/sswinauthwebservice.asmx
https://www.reddit.com/r/sysadmin/comments/2o1gvd/thycotics_secret_server_is_on_sale_again/
http://thycotic.com/products/secret-server/compare-installed-editions/
–jeroen
Posted in Development, Hashing, Security, Software Development | Leave a Comment »
Posted by jpluimers on 2017/01/17
I will probably need this again somewhere in the future: An exponential back-off implementation I used somewhere; probably room for improvement, but it works good enough.
It’s Delphi, but I’ve not seen practical implementations in C# either.
(the updated version thanks to Anders Melander).
–jeroen
| function TryGetLocationLockWithExponentialBackOff: Boolean; | |
| const | |
| cBase = 2; | |
| cMaxWaitMilliSeconds = 1500; | |
| var | |
| lWaitMilliSeconds: integer; | |
| begin | |
| Result := True; | |
| lWaitMilliSeconds := cBase; | |
| while (not TryGetLocationLock) do | |
| begin | |
| if (lWaitMilliSeconds > cMaxWaitMilliSeconds) then | |
| Exit(False); | |
| Sleep(lWaitMilliSeconds); | |
| Inc(lWaitMilliSeconds, lWaitMilliSeconds); | |
| end; | |
| end; |
| function TryGetLocationLockWithExponentialBackOff: Boolean; | |
| const | |
| cBase = 2; | |
| cMaxWaitMilliSeconds = 1500; | |
| var | |
| lIteration: Integer; | |
| lWaitMilliSeconds: Single; | |
| begin | |
| lIteration := 1; | |
| lWaitMilliSeconds := 0; | |
| while lWaitMilliSeconds < cMaxWaitMilliSeconds do | |
| begin | |
| Result := TryGetLocationLock; | |
| if Result then | |
| Exit; | |
| lWaitMilliSeconds := IntPower(cBase, lIteration); | |
| Inc(lIteration); | |
| Sleep(Round(lWaitMilliSeconds)); | |
| end; | |
| Result := TryGetLocationLock; | |
| end; |
Posted in .NET, C#, Delphi, Development, Software Development | 5 Comments »
Posted by jpluimers on 2017/01/17
This is still one of my gripes from Visual Studio: when a changeset is linked to an incorrect work item, you still have to change this from the work item side:
You cannot change it from the changeset UI, but you can change it from most work item UI’s. You can just add a link to a the specific changeset and the changeset will show the link as well.
You have to be careful with the steps too:
If you do it in reverse order, and get the changeset number wrong, you will have an orphan changeset.
–jeroen
Posted in Development, Software Development, Source Code Management, TFS (Team Foundation System), Visual Studio 2010, Visual Studio 2012, Visual Studio 2013, Visual Studio 2015, Visual Studio and tools | Leave a Comment »
Posted by jpluimers on 2017/01/16
From the author of [WayBack] The Chernobyl Story [Updated & Expanded] – Album on Imgur:
I’ve assembled this collection of images surrounding the Chernobyl nuclear disaster to help people gain a better understanding of what happened. It is a very brief, but complete(ish) retelling of what happened, using edited text from a book I’ve written called “Chernobyl 01:23:40”. The book can be bought from Amazon, if anyone’s interested.
The book is even more impressive: “Chernobyl 01:23:40”
–jeroen
via: [WayBack] #insightful The story of #Chernobyl in pictures. – Jan Wildeboer – Google+
Posted in History | 2 Comments »
Posted by jpluimers on 2017/01/16
Since I own a Macintosh SE/30…
Mac SE/30, maximum hard disk capacity – Compact Mac –.
–jeroen
PS: non-related, but still fun:
PS/2: Nice series of pictures: Macintosh SE/30 Overhaul | Flickr – Photo Sharing!
Including
https://www.flickr.com/photos/damianward/sets/72157627731094209
16MB RAM SIMMs in a Macintosh SE/30 | Flickr – Photo Sharing!
SE/30 System & Newton 2100 | Flickr – Photo Sharing!
RetroBright – SE/30 System AFTER | Flickr – Photo Sharing!
James Wages is a man on a mission. Where you and I might see a tired old computer that’s not much use to anyone anymore, he sees a decent machine with plen
Source: The SE/30 That Does It All: Interview With An Expert Vintage Mac User | Cult of Mac
Posted in Apple, Classic Macintosh, Power User | Leave a Comment »
Posted by jpluimers on 2017/01/16
journalctl is a systemd utility that allows the journal to be queried. journalctl command examples for displaying system log files on a systemd Linux system. How to enable persistent journal entries.
Source: Displaying Linux Log files with journalctl
Which reminds me I’ve quite some journald research to do, so here are some links for my link archive:
–jeroen
via:
Posted in *nix, *nix-tools, journalctl and journald, Linux, openSuSE, Power User, SuSE Linux | Leave a Comment »
The Wiert Corner - irregular stream of stuff 