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 ‘BSD’ Category

TrueNAS ZFS: on my list of things to tinker with

Posted by jpluimers on 2026/05/18

I totally missed that FreeNAS has been renamed into TrueNAS CORE. Since FreeNAS had been on my list to tinker with, now is TrueNAS – Wikipedia.

Relate/via:

Tweets:

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Posted in Power User, *nix, ZFS, BSD, FreeBSD | Leave a Comment »

Naming Files and Directories the Right Way – YouTube

Posted by jpluimers on 2026/01/29

I totally agree with the first comment of [Wayback/Archive] Naming Files and Directories the Right Way – YouTube as it holds not just for file management, but for naming anything including software development:

I’ve watched many videos on file management, but this one explains naming very clearly.
  1. 0:31 Rule 1: No Spaces
  2. 2:40 Rule 2: Avoid Special Characters
  3. 3:43 Rule 3: Be Descriptively Concise
  4. 4:24 Rule 4: Case Sensitivity
  5. 5:00 Rule 5: Dates and Sorting
  6. 6:40 Rule 6: Be Consistent!

--jeroen

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

How to Do a UDP Ping in Linux

Posted by jpluimers on 2026/01/07

Often connections are TCP based, but sometimes UDP is all you have to test with, so I was quite surprised that testing that was quite forward. The solutions by [Wayback/Archive] How to Do a UDP Ping in Linux works on any platform where you can have nmap or netcat on installed (which by now is almost all platforms including Windows):

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Posted in *nix, *nix-tools, Apple, BSD, Mac OS X / OS X / MacOS, netcat, nmap, Power User, Windows | 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 »

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 »

H3/H2 Net Card – ODROID – wonder how well pfSense supports it

Posted by jpluimers on 2025/04/18

I wonder how well [Wayback/Archive] H3/H2 Net Card – ODROID is supported by pfSense. It is an M.2 based PCIe network card that adds 4 ethernet ports of 2.5 gigabit each to an ODROID H2 or H3 series (so you have 6 ports total), ideal for some hefty router.

Pictures (from the above link) of the board, cases and mainboard below.

But first: Realtek NICs is not vendor supported on FreeBSD (which pfSense and OPNsense are based on).

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Posted in *nix, BSD, Ethernet, FreeBSD, Hardware, Network-and-equipment, pfSense, Power User, routers | Tagged: , | Leave a Comment »

ropg/ipocalypse: FreeBSD jails with web servers on a single IPv4 address

Posted by jpluimers on 2022/08/04

Rob Gongrijp has this nice repository [Wayback/Archive.is] ropg/ipocalypse: FreeBSD jails with web servers on a single IPv4 address:

To deal with web servers (which all need to be reached at ports 80 (http) and 443 (https), I describe a convenient Apache reverse proxy setup in its own jail, and the management script I wrote to make things super-easy.

Via [Archive.is] ᖇ⦿ᖘ Gonggrijp on Twitter: “HOWTO for setting up a FreeBSD host with multiple jails running web servers on a single IPv4 address. (No rocket science: just a general HOWTO plus an easy certificate management / reverse proxy script which also works on other systems with adaptation.) … “

With an interesting response [Archive.is] corbosman on Twitter: “I use kubernetes/traefik pretty much like that, and before that docker/traefik. It’s getting more and more difficult to get IP space at all.… “

–jeroen

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

Kris on Twitter is a bit radical against shell scripts. Learn why.

Posted by jpluimers on 2022/04/13

I say to people: only use shell interactively, don’t write scripts. Never. Not one.
But Kris, they ask, why so radical?
Because of this:

is the literal English Google Translation of the German text

Ich sage den Leuten: benutzt Shell nur interaktiv, schreibt keine Scripte. Nie. Nicht eines.
Aber Kris, fragen sie, wieso so Radikal?
Deswegen:

then links to [Wayback/Archive] Jan Schaumann on Twitter: “TIL zgrep(1) is a shell script. BSD basically does “zcat | grep”, but GNU does “gzip -dc | sed”. How did I learn that? The fun way! CVE-2022-1271, arbitrary-file-write and code execution vulnerability in GNU zgrep / gzip. …”:

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Posted in *nix, *nix-tools, Apple, ash/dash, ash/dash development, bash, bash, BSD, Development, Mac, Mac OS X / OS X / MacOS, Power User, Scripting, Software Development | Leave a Comment »

htop – an interactive process viewer for Unix

Posted by jpluimers on 2017/12/25

Great tool: [WayBackhtop – an interactive process viewer for Unix because it’s both interactive and supports a wide range of OSes: Linux, FreeBSD, OpenBSD and Mac OS X.

Thanks to Warren Postma who suggested it in his comment at [WayBack18 Useful Commands to Get Hardware Information on Linux – Linuxslaves.

Note that on OS X you get this warning after brew install htop :

htop requires root privileges to correctly display all running processes,
so you will need to run `sudo htop`.
You should be certain that you trust any software you grant root privileges.

On Linux you don’t get this message as there you have the /proc file system providing enough information as explained at [WayBackosx – Why does htop on Mac OS X require root privileges to see data for all processes, but on Linux it runs without root – Super User.

A workaround (involving the setuid bit) is at [WayBackRunning htop on Mac OS X needs root. Why?! | Blog | JoeNyland.me or by running visudo ensuring you don’t need a password for it at [WayBackosx – htop isn’t returning CPU or memory usage!? – Super User

–jeroen

 

Posted in *nix, *nix-tools, Apple, BSD, Linux, Mac OS X / OS X / MacOS, macOS 10.12 Sierra, OS X 10.11 El Capitan, OS X 10.9 Mavericks, Power User | Leave a Comment »

ducks: How Do I Find The Largest Top 10 Files and Directories On a Linux / UNIX / BSD?

Posted by jpluimers on 2017/03/20

Explains how to find out top 10 files and directories under Unix / Linux using sort and du command in human-readable format.

Interesting, especially

alias 'ducks=du -cks * | sort -rn | head'

Source: How Do I Find The Largest Top 10 Files and Directories On a Linux / UNIX / BSD?

via: Joe C. Hecht and nixCraft.

–jeroen

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