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 ‘*nix’ Category

command line – Why does a cURL request return a percent sign (%) with every request in ZSH? – Stack Overflow

Posted by jpluimers on 2025/07/31

I try to stay on the default shells of environments as much as possible, especially as that makes life easier when needing to work on an non-customised system.

Apple switched back from an ancient latest GPLv2 version 3.2 of bash (they regard newer GPLv3 as toxic to their revenue stream¹), introduced MIT-license based zsh and introduced a bash nag screen a few years ago forcing users to switch. Suppressing that message reliably is trickier than you might think².

After so many years of bash, I still stumble over things that zsh does differently: [Wayback/Archive] command line – Why does a cURL request return a percent sign (%) with every request in ZSH? – Stack Overflow (thanks [Wayback/Archive] Travis and [Wayback/Archive] zaTricky) is a “feature” with a simple workaround for cURL:

This is a zsh feature that prints a percent-and-newline after a command completes if that command does not already include a newline at the end of its output. If zsh did not do this, you would either not ever notice the fact that the command didn’t print a newline – or you’d see zsh’s command prompt not start on the margin and think it was a bug in zsh.

$ curl http://api.macvendors.com/0015c7   
Cisco Systems, Inc%     
$ curl -w '\n' http://api.macvendors.com/0015c7
Cisco Systems, Inc

Since the above example now writes a redirect messages (good bye HTTP, welcome HTTPS), and I very much dislike short command-line parameters, here is version with the long form of the [Wayback/Archive] curl -w or --write-out parameter :

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Posted in *nix, *nix-tools, Apple, bash, bash, Development, Mac OS X / OS X / MacOS, macOS 14 Sonoma, macOS 15 Sequoia, Power User, Scripting, Software Development, zsh | Leave a Comment »

A PDF can run JavaScript, which means it can hosts a VM for Linux or Doom

Posted by jpluimers on 2025/06/12

A few years back, this question popped up: [Wayback/Archive] Embedding JS into PDF : cybersecurity

The answer is yes, and you can take this far. Virtualisation far. Which is what these repositories – both by [Wayback/Archive] ading2210 · GitHub – did:

Via [Wayback/Archive] Angry Nerds Podcast – YouTube -> [Wayback/Archive] Angrynerds 235 – Automasturbator – YouTube -> 1540 seconds at [Wayback/Archive] Angrynerds 235 – Automasturbator – YouTube – t=5040s

1:24:00 Hadden we Doom in PDF-vorm al eens genoemd? https://github.com/ading2210/doompdf Er is een vervolg, nu gewoon linux draaien in een PDF https://github.com/ading2210/linuxpdf Dus in feite gewoon een PDF-VMetje

Related:

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Posted in *nix, Development, JavaScript/ECMAScript, Linux, Power User, Software Development, Virtualization | Leave a Comment »

unix – How come is this command returning “GET A LIFE!”? – Stack Overflow

Posted by jpluimers on 2025/06/11

Didn’t know nx had a scriptable RPN command-line calculator dc (for Desk Calculator) which does not seem to need white space characters in the input stream or input file.

It likely is a source for command-injection attacks given the question [Wayback/Archive] unix – How come is this command returning “GET A LIFE!”? – Stack Overflow, so I did a bit of digging and found this great platform:

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

What is the Python 3 equivalent of “python -m SimpleHTTPServer” – Stack Overflow

Posted by jpluimers on 2025/05/29

Now that Python 2 has been dead for long enough (has it been unsupported for 5 years? yes it has: [Wayback/Archive] Status of Python Versions), it was finally time to change my alias for running a local web-server to serve files from a directory (:

So, from [Wayback/Archive] What is the Python 3 equivalent of “python -m SimpleHTTPServer” – Stack Overflow (thanks [Wayback/Archive] ryanbraganza, [Wayback/Archive] k.avinash and [Wayback/Archive] Petr Viktorin):

python -m http.server 8000, it will start the server on port 8000

Docs with the migration hints: [Wayback/Archive] 20.19. SimpleHTTPServer — Simple HTTP request handler — Python 2.7.18 documentation

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Posted in *nix, *nix-tools, bash, Batch-Files, Development, Power User, Python, Scripting, Software Development | Leave a Comment »

Interesting take by Florian Roth on Twitter: “First security application I install on … “” covering various platforms (both server and workstation) with tools that are easy and quick to install

Posted by jpluimers on 2025/05/26

[Wayback/Archive] Florian Roth on Twitter: “First security application I install on … macOS: LittleSnitch Linux Server: Fail2ban Linux Workstation: etckeeper Windows Workstation: GlassWire Windows Server: Sysmon — What are yours?”

Full thread at [Wayback/Archive] Thread by @cyb3rops on Thread Reader App

Some interesting responses to the original tweet, hence me saving it.

–jeroen

Posted in *nix, *nix-tools, Apple, BSD, FreeBSD, Mac OS X / OS X / MacOS, Power User, Windows | Leave a Comment »

Upptime: GitHub-powered open-source uptime monitor and status page

Posted by jpluimers on 2025/05/14

I wonder how long this can be hosted on GitHub. Will start using it, just to learn more about the GitHub computing infrastructure.

Links:

--jeroen

Posted in Cloud, Development, DVCS - Distributed Version Control, GitHub, Hosting, Infrastructure, Monitoring, Power User, Software Development, Web Development | Leave a Comment »

GitHub – walles/moar: Moar is a pager. It’s designed to just do the right thing without any configuration.

Posted by jpluimers on 2025/05/08

Having used less for 40+ years now, I wonder how moar measures up to it: [Wayback/Archive] GitHub – walles/moar: Moar is a pager. It’s designed to just do the right thing without any configuration.

Features I at least expect are in [Wayback/Archive] less: display the contents of a file in a terminal | less Commands | Man Pages | ManKier.

Via [Wayback/Archive] Johan Walles recently commenting on [Wayback/Archive] linux – How can I have less automatically decompress xz files like it did with gz files on my old SUSE distro? – Super User.

--jeroen

Posted in *nix, *nix-tools, Apple, BSD, Development, Go (golang), Mac, Mac OS X / OS X / MacOS, Power User, Software Development | Leave a Comment »

Setting Up a Raspberry PI with a German Mac Keyboard – Seaside Testing

Posted by jpluimers on 2025/05/08

[Wayback/Archive] Setting Up a Raspberry PI with a German Mac Keyboard – Seaside Testing.

Reminder to self: figure out where parameters for /etc/default/keyboard are documented in case I want to use USB keyboards:

  • from other manufacturers than Apple
  • with other language layouts

Via: [Wayback/Archive] Stephan Kämper (@seasidetesting@mastodon.social) on Twitter: “Setting Up a Raspberry PI with a German Mac Keyboard”

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Posted in Debian, Development, Hardware, Hardware Development, Keyboards and Keyboard Shortcuts, KVM keyboard/video/mouse, Linux, Power User, Raspberry Pi, Raspbian | Leave a Comment »

Some SQLite things I recently learned a while ago

Posted by jpluimers on 2025/04/30

More on the reason why I learned a few SQLite things soon, but for my link and documentation archive, below is what I learned.

Most commands use the database file C:\temp\History which has no extension as that is how I got the file in the first place (spoiler: it’s a Chrome browser History from one of my user profiles).

Let’s get started:

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Posted in *nix, *nix-tools, bash, CommandLine, Conference Topics, Conferences, Console (command prompt window), Database Development, Development, Event, Power User, PowerShell, PowerShell, Software Development, SQL, SQLite | Leave a Comment »

“NAMED_CONF_INCLUDE_FILES” has been gone from /etc/sysconfig/named since OpenSuSE 15.4

Posted by jpluimers on 2025/04/28

In the past, I used to modify /etc/sysconfig/named and add entries to the NAMED_CONF_INCLUDE_FILES setting, then run /usr/share/bind/createNamedConfInclude
to generate /etc/named.conf.include.

As of OpenSuSE 15.4, /usr/share/bind/createNamedConfInclude has become an empty file and NAMED_CONF_INCLUDE_FILES got removed and NAMED_INITIALIZE_SCRIPTS introduced.

So now I changed my playbooks to manually generate /etc/named.conf.include and include it form /etc/sysconfig/named.

Since I hardly perform these new installations, it took a few years for me to find out about this change. Upgrading existing systems somehow kept the generated file and included it.

Related links with quotes as it was hard to find out what changed and how to work around and I wasn’t the only one bump into issues:

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Posted in *nix, *nix-tools, bash, bash, bind-named, Development, DNS, LEAP, Linux, openSuSE, Power User, Scripting, Software Development, SuSE Linux | Tagged: | Leave a Comment »