Tech Articles
Curated developer articles, tutorials, and guides – auto-updated hourly
Mito1d ago • 6 min read
Your Pi's 2 GB swap file isn't swap, and no swap command will tell you that
TL;DR: Raspberry Pi OS Trixie ships rpi-swap instead of dphys-swapfile, defaulting to a zram+file...
#raspberrypi#linux#sysadmin#debugging
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Toni Angelchovski4d ago • 6 min read
Why GNU/Linux Isn't for Everyone - and That's a Good Thing
We have been hearing "Linux is ready for the desktop" for twenty years. Maybe the question is the...
#linux#opensource#discuss#sysadmin
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Kingsley Kanu2d ago • 6 min read
I renamed a live Proxmox node and twelve guests never noticed
The host had the wrong name. I had given it the good name, the one I wanted for the whole cluster,.....
#proxmox#sysadmin#clustering#homelab
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chen zong1d ago • 3 min read
SSH agent forwarding is a footgun. Use ProxyJump instead.
You need to git pull on a server, or hop from a bastion to a box behind it, and your key only lives....
#security#ssh#devops#sysadmin
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Mito23h ago • 6 min read
sysctl -p says it worked. The next reboot disagrees.
TL;DR: /etc/sysctl.conf doesn't ship on Raspberry Pi OS Trixie, and if you create it, the thing that...
#raspberrypi#linux#systemd#sysadmin
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Vainamoinen | Pulsed Media1d ago • 5 min read
Why systemctl --user daemon-reload silently does nothing
A failed per-user systemd manager turns systemctl --user daemon-reload into a silent no-op, so your ...
#linux#systemd#sysadmin#devops
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chen zong1d ago • 3 min read
SSH hardening: 3 changes do 90% of the work, the rest is theater
Search "SSH hardening" and you get a 20-item checklist: change the port, disable protocol 1, set a.....
#security#ssh#devops#sysadmin
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Mito23h ago • 5 min read
A new NetworkManager property broke a decade of headless WiFi scripts
TL;DR: NetworkManager 1.52 (in Trixie) added an autoconnect-ports property. That makes autoconnect-p...
#raspberrypi#linux#networking#sysadmin
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ricco02021h ago • 2 min read
Your sysctl says one thing, the kernel says another
You set net.ipv4.ip_forward=1 in /etc/sysctl.conf. You rebooted. The value is still 0. Nothing is.....
#linux#security#devops#sysadmin
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Boris Gigovic5d ago • 5 min read
How Remote Desktop Services (RDS) Work: Architecture, Security, and Troubleshooting
Remote Desktop Services (RDS) looks simple from the outside—open a client, sign in, get a desktop or...
#remotedesktop#sysadmin#itoperations#debugging
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Kumar4d ago • 4 min read
Moving Existing Windows Devices to Entra ID: Why the Endpoint Is Often the Hardest Part
Many organizations are working toward a cloud-based identity and device-management model. Users are....
#entraid#intune#devicemigration#sysadmin
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ricco0204d ago • 2 min read
Your drive says SMART PASSED and is already failing: the 5 attributes that actually predict it
SMART's PASSED verdict stays green long after sectors start going unreadable. The five attributes th...
#linux#sysadmin#hardware#devops
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Elena Burtseva1d ago • 13 min read
MacBooks for Sysadmin Work: Practicality and Acceptance in Professional Office Environments Explored
Introduction The debate over the practicality of MacBooks for sysadmin tasks extends...
#sysadmin#macbook#virtualization#compatibility
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Darkssel13m ago • 5 min read
Why Does My Windows PC Randomly Freeze or Stutter (When Nothing Is Running)?
You're typing a document, moving the mouse, or just watching a video. Then it happens. The cursor....
#windows#troubleshooting#performance#sysadmin
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Rafael Adiosdado Caballero Diéguez3d ago • 3 min read
Slowloris: cómo una sola máquina tumba un servidor web (y cómo defenderte)
Publicado originalmente en adeodato.es. Una sola máquina, sin botnets y sin saturar la red, puede....
#security#cybersecurity#blueteam#sysadmin
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Novbox2d ago • 5 min read
Smart Spaces Start with Smart Sensors: How Cisco Meraki MT Gives Businesses Real-Time Environmental Intelligence
Most businesses can tell you exactly how fast their internet is running. Very few can tell you...
#networking#cisco#iot#sysadmin
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Novbox3d ago • 5 min read
The Guest Experience Starts With the Network: How Cisco Meraki Delivers Flawless Wi-Fi for Hospitality Businesses
In the hospitality industry, a guest's experience begins long before they reach the front desk. The....
#networking#cisco#meraki#sysadmin
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olivia Millie5d ago • 2 min read
The SSH Security Hardening Checklist for Dedicated Servers
A practical 11-step checklist to secure your Linux server's SSH configuration against automated bots...
#linux#cybersecurity#sysadmin#devops
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olivia Millie5d ago • 2 min read
IPv4 vs IPv6: A Complete Guide for UK Dedicated Servers
Understand the differences between IPv4 and IPv6, their pricing, and why a dual stack setup is essen...
#networking#infrastructure#webhosting#sysadmin
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MonoVM VPS Hosting4d ago • 1 min read
Need to activate Windows on your VPS but not sure where to start? A quick tip: always verify your
Need to activate Windows on your VPS but not sure where to start? A quick tip: always verify your...
#windowsvps#windowslicense#vpshosting#sysadmin
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Raizan3d ago • 7 min read
Setting Up Fail2ban to Protect Linux Cloud Servers
A practical guide covering setting up fail2ban to protect linux cloud servers.
#devops#sysadmin#security#linux
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olivia Millie5d ago • 3 min read
What Is a Dedicated Server? A Complete Guide for UK Businesses
Learn the difference between shared hosting, VPS, and dedicated servers, and discover when your busi...
#webhosting#sysadmin#infrastructure#uk
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olivia Millie5d ago • 2 min read
The Monitoring Bill Nobody Planned For: SaaS vs Self-Hosted
Why SaaS monitoring costs spiral out of control and how to build a scalable self-hosted observabilit...
#devops#observability#prometheus#sysadmin
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Cyber Updates 3655d ago • 1 min read
Critical Unpatched GeoServer Zero-Day: Active SQLi Leads to RCE
Critical Unpatched GeoServer Zero-Day: Active SQLi Leads to RCE An unpatched GeoServer...
#cybersecurity#zeroday#infosec#sysadmin
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