Archive for the ‘BSD’ Category
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 »
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.
- 0:31 Rule 1: No Spaces
- 2:40 Rule 2: Avoid Special Characters
- 3:43 Rule 3: Be Descriptively Concise
- 4:24 Rule 4: Case Sensitivity
- 5:00 Rule 5: Dates and Sorting
- 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 »
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 »
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: homelab, serverbuilds | Leave a Comment »
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 »
Posted by jpluimers on 2017/12/25
Great tool: [WayBack] htop – 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 [WayBack] 18 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 [WayBack] osx – 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 [WayBack] Running 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 [WayBack] osx – 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 »
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 »