Writing
Tutorials for the cases where the manual was not enough and nothing online fitted the exact problem, and notes: cheat sheets, references and specs I needed and had to work out myself.
- Swapping LLMs in Under Two Seconds: A Sleep Mode for llama.cpp
How a small wrapper that parks llama-server's GPU memory in host RAM, plus a kernel setting, makes model swaps behind llama-swap about six times faster.
- Is CVE Growth Exponential, and Does Exploitation Follow?
A short study of CVE List, KEV and EPSS data up to October 2026: how fast CVE counts grow, who publishes them, and whether exploitation keeps pace.
- Migrating from ZHA to Zigbee2MQTT without re-pairing
Moving 73 Zigbee devices from ZHA to Zigbee2MQTT on the same coordinator without re-pairing: network identifiers, byte order, frame counter and device database.
- RHEL 8 CUDA Container Install on a DGX H100 Machine
Installing the NVIDIA driver, CUDA, Fabric Manager and the container toolkit on an NVIDIA DGX H100 running RHEL 8.8.
- List of NICs and their OEM parts
Mellanox network cards and their OEM part numbers from IBM, Dell, Lenovo, HPE and H3C.
- DHL Packstation PostCard Barcode
Generate the barcode of a DHL Packstation customer card from your PostNummer, so you can pick up parcels without the new card.
- Installing Tang on OPNsense
Building and running the Tang NBDE server on OPNsense from ports: unprivileged, off the WAN, with key rotation and surviving updates.
- Factory Reset an APC AP9631 UPS Network Management Card
Factory-resetting an APC UPS Network Management Card without the special serial cable that the manual says you need.
- Network Bound Disk Encryption with clevis and tang on OpenWrt
Unlocking a LUKS-encrypted Fedora system automatically with Clevis and a Tang server running on an OpenWrt router.
- Sending e-mails via mailbox.org with msmtp on Fedora
Send system mail such as ZFS zed alerts through a mailbox.org alias with msmtp and s-nail on Fedora.
- Zyxel GS1200-5/8 stuck in upgrade mode
Getting a Zyxel GS1200 switch out of a stuck firmware upgrade by pushing the firmware with curl.
- Installing Google Coral Mini PCIE Dual EdgeTPU on Fedora
Running a Google Coral Dual Edge TPU on Fedora: a PCIe adapter for both TPU cores and the gasket-dkms driver from Copr.
- Search Engines for Pentesters
Search engines for IT security research, such as Shodan, Censys and ZoomEye, grouped by what each one finds.
- Reversing API Endpoints from Barcoo App
Reverse engineering the barcoo app's API to look up product data by EAN for a DIY fridge scanner, re-checked against the 2026 app.
- Flashing Huawei E3372h 4G LTE Stick from HiLink to Modem Mode
Flash a Huawei E3372h LTE stick from HiLink to stick (modem) firmware, so it shows up as a plain modem without NAT and built-in firewall.
- Fedora encrypted disk unlocking via SSH
Unlock a LUKS2-encrypted Fedora system over SSH from the initramfs with dracut-sshd, for machines with only a Bluetooth keyboard.
- Control Hue Smart Plug using Spotify
Switch a Hue smart plug for the stereo on and off depending on whether Raspotify (librespot) on a Raspberry Pi is playing.
- Julet/HIGO Mini Connector Specs
Dimensions and pinout of the Julet/HIGO Mini B signal connectors used for e-bike throttles, brakes, PAS sensors and lights.
- Wemos TTGO ESP8266 with 0.91" OLED
Specifications and pinout of the Wemos TTGO ESP8266 board with a 0.91-inch OLED display, which also works with ESPHome.
- Loewe TV HDMI Specifications and Service Menu
Which HDMI port of a Loewe bild TV (SL3xx, SL4xx, SL5xx) supports UHD 60 Hz, HDR, Dolby Vision and ARC, how to enable HDR, and how to open the service menu.