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Posted by jpluimers on 2021/10/21
I have used other on-line HTML cleanup tools in the past (especially for including parts of web-pages in a blog post), but so far none beats HTML Washer: [Wayback] HTML cleanup tool & simplifier. For basic & clean HTML 🔧
An online tool that reduces HTML to basic tags and attributes. Removes scripts, CSS, and other non-basic elements like , , etc… Also, corrects errors and formats the HTML doc or a fragment.
–jeroen
Posted in Development, HTML, Power User, SocialMedia, Software Development, Web Development, WordPress | Leave a Comment »
Posted by jpluimers on 2021/10/21
Zombies probably won’t consume 32 GB of your memory like they did to me, but zombie processes do exist, and I can help you find them and make sure that developers fix them…
Source: [WayBack] Zombie Processes are Eating your Memory | Random ASCII
For my link archive via [WayBack] In short, close handles after process opening or creation, or it leaks and zombie process stays consuming 64k. – Ilya S – Google+
–jeroen
Posted in Development, Software Development, Windows Development | Leave a Comment »
Posted by jpluimers on 2021/10/21
I need to write some tests for this, but it looks like you can use the keywords Begin/Process/End with code blocks when the script block is inside a .ForEach member call.
The behaviour seems to be the same as if these blocks are part of a function that executes inside a pipeline (Begin and End are executed once; Process is executed for each item in the pipeline).
It’s hard to Google on this, as all hits of all queries I tried got me into these keywords in the context of functions.
The below links are on my reading list.
Microsoft documentation:
SS64 docs (which has guidance on which of the 3 foreach constructs to use when):
ForEach and %)Social media and blog posts:
$array.ForEach({}) | Saved KeystrokesStackOverflow entries:
I know this is truly old, but here’s a function I added to my Profile to facilitate registry exploration:
Function Get-KeyProperty { Param( [Parameter(Mandatory=$true,ValueFromPipeline=$true)] [ValidateScript( {(Resolve-Path $_).Provider.Name -Like 'Registry'} )] [String[]] $Path, [String[]] $Name=@("*") ) Process { $Name.ForEach({ (Get-Item $Path).Property -like $_}).ForEach({ Begin {$Hash = @{}} Process { $Hash += @{ $_ = (Get-Item $Path).GetValue($_)} } End {[PSCustomObject]$Hash} }) }}…
–jeroen
Posted in CommandLine, Development, PowerShell, PowerShell, Scripting, Software Development | Leave a Comment »
Posted by jpluimers on 2021/10/20
Highlights from the thread [Archive.is] Tomasz Łakomy on Twitter: “What’s the most difficult programming concept you can explain in a tweet?”
Finally a cheat (as it has an image), but great illustration:
Posted in Development, SocialMedia, Software Development, Twitter | Leave a Comment »
Posted by jpluimers on 2021/10/20
[Archive.is] Filippo Valsorda on Twitter: “whoami.filippo.io , the SSH server that knows who you are, got some newly refreshed intel! Try it out! $ ssh whoami.filippo.io “
The server itself has some HTML with information too whoami.filippo.io redirecting to [WayBack] ssh whoami.filippo.io (source code is at [WayBack] GitHub – FiloSottile/whoami.filippo.io: A ssh server that knows who you are. $ ssh whoami.filippo.io).
It’s a cool open source server written in Golang, that gets all your public ssh keys (ssh automatically transmits those) and tries to map them back to a GitHub account.
In addition it shows you some potential vulnerabilities of your ssh client.
Note that in October 2020, it was temporarily down, but it will be up again: [Archive.is] Filippo Valsorda 💉💉 on Twitter: “Yeah I’m planning to but I can’t give you an ETA I’m afraid. A few weeks, maybe?… “
Some interesting comments in the thread:
https://GitLabWebsite/username.keys… “github-keygen: it builds SSH config that protects against this attack by using your GitHub SSH key only when connecting to GitHub.… “
This script will:
- Create a new SSH key dedicated only to your GitHub connections in ~/.ssh/id_<github-account>@github
- Create the SSH configuration optimized for GitHub and dedicated to GitHub (does not impact your other SSH configurations) in ~/.ssh/config.
- Install the GitHub SSH host authentication fingerprints in ~/.ssh/known_hosts_github
whoami.filippo.io is a neat trick, not a proof of concept of a vulnerability. However, all the folks who said “public keys are public duh” pass their cryptography 101 and fail their security 201 =)”
$ ssh whoami.filippo.io (code: …) “Related: [WayBack] Auditing GitHub users’ SSH key quality
[WayBack] GitHub – FiloSottile/whoami.filippo.io: A ssh server that knows who you are. $ ssh whoami.filippo.io: How do I stop passing public keys
How do I stop it?
If this behavior is problematic for you, you can tell ssh not to present your public keys to the server by default.
Add these lines at the end of your
~/.ssh/config(after other “Host” directives)Host * PubkeyAuthentication no IdentitiesOnly yesAnd then specify what keys should be used for each host
Host example.com PubkeyAuthentication yes IdentityFile ~/.ssh/id_rsa # IdentitiesOnly yes # Enable ssh-agent (PKCS11 etc.) keysIf you want you can use different keys so that they can’t be linked together
Host github.com PubkeyAuthentication yes IdentityFile ~/.ssh/github_id_rsa
–jeroen
Posted in *nix, *nix-tools, Communications Development, Development, Go (golang), Internet protocol suite, Power User, Software Development, SSH, ssh/sshd, TCP | Leave a Comment »
Posted by jpluimers on 2021/10/19
Great quote from a while back:
[WayBack] Filippo Valsorda on Twitter: “Here’s a secret: it’s not that hard to put together a crypto specification. What’s hard is to make it safe and misuse resistant. What needs to be “battle tested” is the security devex, not the narrow happy path, and blaming the developer when it breaks is not battle testing.”
From the same thread:
–jeroen
Posted in Development, Power User, Security, Software Development | Leave a Comment »
Posted by jpluimers on 2021/10/19
Just in case I ever need this again:
- In the console screen of the ESXi host, press Ctrl+Alt+F2 to see the Direct Console User Interface (DCUI) screen.
- Press F12 to view the shutdown options for the ESXi host.
- Press F11 to reboot.
- When the Hypervisor progress bar starts loading, press Shift+R. You will see the warning:
Current hypervisor will permanently be replaced with build: X.X.X-XXXXXX. Are you sure? [y/n]- Press Y to roll back the build.
- Press Enter to boot.
- This is not my case.As I mentioned, I don’t have altbootbank with update 2. This is because after update 3, I also installed the latest patch.So both bootbanks now have update 3.Is there any other option for me. Can I just install update 2 again so it will overwrite everything? Or it is impossible?
- Backup ESXi configurations and reinstall it without overwriting VMFS.
Via: [Wayback/Archive.is] downgrade esxi 6.5 u3 to u2 – Google Search
–jeroen
Posted in ESXi6, ESXi6.5, ESXi6.7, ESXi7, Power User, Virtualization, VMware, VMware ESXi | Leave a Comment »
Posted by jpluimers on 2021/10/19
From a long while my answer to [WayBack] EProgrammerNotFound exception in Delphi? – Stack Overflow (I added the WayBack links)
It was introduced in Delphi 2009, still present in Delphi 2010, and [WayBack] recently got some [WayBack] more attention on the [WayBack] internet.
I think it is an easter egg, similar to [WayBack] “EBCAK” (Error Between Chair and Keyboard), and the [WayBack] skipping of Delphi version number 13.
- is declared in the Win32 branch of the SysUtils unit, but not used anywhere in the RTL or VCL
- is not present in Delphi Prism
- was introduced in Delphi 2009, so not present in VCL.NET
- has currently (version 3.5) nothing similar in the .NET framework (not sure why, these guys [WayBack] do have humour)
I don’t think EProgrammerNotFound is actually meant to be used at all, but since it is there, people will jokingly use it (similar like putting a stray “const False = True; True = not False;” in someone elses sourcecode).
On green bits and red bits (which I highly associate with the “green wobbly bit”:
[WayBack] The Moth – .NET Framework 3.5.NET Framework (NetFx or Fx) version 3.5 has two elements to it that must be understood: the green bits and the red bits. The original references to this term are on old blog posts by Soma and Jason. Compared to those two blog entries I have the advantage of 13 months of hindsight :-), so I will provide here the details behind those descriptions in my own words starting with my own slide
–jeroen
Posted in Delphi, Development, Software Development | Leave a Comment »
Posted by jpluimers on 2021/10/18
Reminder to self to check out if things have improved over time: [WayBack] Kristian Köhntopp on Twitter: “Trying my lvmraid kata from yesterday in real hardware was very frustrating. Everything is very single threaded, and does not leverage anything of the power of the actual device. … Basically, my linear-to-raid conversion idea died in the crib.” described to 2019 situation:
- [WayBack] Trying lvmraid for real | Die wunderbare Welt von Isotopp
So basically this died in the crib, because it does not leverage any parallelism the CPU, the multitude of drives, the deep queues of the NVMEs or anything else would have to offer.
It’s from the past.
LVM is in need of serious overhaul in order to become a tool for the 2020’s. Outside of toy workloads, snapshots don’t work, lvmraid also does not work.
- [WayBack] Cloning and splitting logical volumes | Die wunderbare Welt von Isotopp
–jeroen
Posted in Hardware, Power User, RAID | Leave a Comment »
Posted by jpluimers on 2021/10/18
For my link archive:
–jeroen
Posted in Hosting, Power User | Leave a Comment »
The Wiert Corner - irregular stream of stuff 