Techne

apache

anonymous@undisclosed.example.com (Anonymous) — Fri, 13 Feb 2026 09:44:56 +0000

Install mod-evasive Add mod_evasive to VirtualHost Restart apache2:

archlinux

anonymous@undisclosed.example.com (Anonymous) — Sat, 07 Mar 2026 12:01:07 +0000

Pacman cheatsheet Action Command Clean pacman cache sudo pacman -Sc Upgrade specific package(s) sudo pacman -U ...

atop

anonymous@undisclosed.example.com (Anonymous) — Fri, 13 Feb 2026 09:45:43 +0000

Get lowest memfree for given analysis date Argument Description

bash

anonymous@undisclosed.example.com (Anonymous) — Mon, 30 Mar 2026 09:47:25 +0000

Print nth line from file Prepend text to beginning of file Remove lines containing only whitespace Delete nth line from file Replace an entire line in file by line number Heredoc Plain-print the difference between two files Suppose we have two files:

btrfs

anonymous@undisclosed.example.com (Anonymous) — Fri, 13 Feb 2026 09:47:17 +0000

Create systemd.mount unit for Btrfs on external HDD Get the UUID of the Btrfs partition: Edit /etc/systemd/system/mnt-internet_archive.mount: DefaultDependencies=yes The mount unit automatically acquires Before=umount.target

cachyos

anonymous@undisclosed.example.com (Anonymous) — Sun, 29 Mar 2026 08:55:21 +0000

Gaming Resources: * * Lutris * Steam DLSS Edit /etc/environment. Fix possible RTX 4000+ performance issues Edit /etc/environment. Increase maximum shader cache size (NVIDIA) Edit /etc/environment. Reboot the system. scx_bpfland Source:

caddy

anonymous@undisclosed.example.com (Anonymous) — Fri, 13 Feb 2026 09:48:10 +0000

IP whitelist Reverse proxy for qBittorrent over Tailscale

cgit

anonymous@undisclosed.example.com (Anonymous) — Fri, 13 Feb 2026 09:48:31 +0000

Install Cgit with Caddy Dependencies * xcaddy package from releases page. Install caddy-cgi: Install remaining dependencies: Configuration Make a git user. Configure gitolite for the git user in ~/.gitolite.rc. Add caddy user to the git group.

dietpi

anonymous@undisclosed.example.com (Anonymous) — Fri, 13 Feb 2026 09:49:56 +0000

systemd-logind Install libpam-systemd: Unmask and enable systemd-logind:

drm

anonymous@undisclosed.example.com (Anonymous) — Fri, 13 Feb 2026 09:50:13 +0000

Nix-shell Install libgourou in nix-shell. Docker Extract PDF or EPUB from ACSM file Register the device with Adobe username and password. Download the ACSM file. Make sure the ACSM file is in the current working directory. The downloaded file requires a password to open. Remove the DRM from the files.

fail2ban

anonymous@undisclosed.example.com (Anonymous) — Fri, 13 Feb 2026 09:50:35 +0000

Configure fail2ban on Linux with firewalld Configure fail2ban on FreeBSD with PF Edit /usr/local/etc/fail2ban/jail.local. Enable and start fail2ban. Configure /etc/pf.conf Check and reload PF rules.

fedora-atomic

anonymous@undisclosed.example.com (Anonymous) — Fri, 13 Feb 2026 09:50:51 +0000

Access USB serial device in container Create a udev rule on the host for all usb-serial devices. Set OWNER to your 1000 user. Reload udev. The serial device should now be owned by your user. You can now run minicom inside the toolbox container.

fedora

anonymous@undisclosed.example.com (Anonymous) — Sat, 04 Apr 2026 21:27:29 +0000

Repo priorities and exclusions Terra repositories (Fyra Labs) Prioritize the fdk-aac-free package from upstream by excluding fdk-aac from Terra: Set Terra repositories priority to 3: RPMFusion repositories Set all RPMFusion repositories priorities to 5:

firewalld

anonymous@undisclosed.example.com (Anonymous) — Fri, 13 Feb 2026 09:51:06 +0000

Allow connections only from tailnet Create a new zone for the tailscaled0 interface. Add services and ports to the tailnet zone. Ensure the public zone does not have any interfaces or sources. The firewall should now only allow traffic coming from the tailnet interface.

freebsd

anonymous@undisclosed.example.com (Anonymous) — Fri, 13 Feb 2026 09:51:25 +0000

USB 3.1 Type-C to RJ45 Gigabit Ethernet adapter The Amazon Basics Aluminum USB 3.1 Type-C to RJ45 Gigabit Ethernet Adapter works well with FreeBSD 14.1-RELEASE. It uses the AX88179 chipset from ASIX Electronics Corp. Install the ports tree Source: Chapter 4. Installing Applications: Packages and Ports | FreeBSD Documentation Portal Ensure the FreeBSD source code is checked out Check out the ports tree

internet-archive

anonymous@undisclosed.example.com (Anonymous) — Fri, 13 Feb 2026 09:52:56 +0000

Install Python command line client Use Python client to download torrent files from given collection Ensure “Automatically add torrents from” > Monitored Folder is set to /mnt/torrent_files and the Override save path is Default save path. Get itemlist from collection

kernel

anonymous@undisclosed.example.com (Anonymous) — Fri, 13 Feb 2026 09:53:15 +0000

Disable core dumps in Linux limits.conf and sysctl Edit /etc/security/limits.conf and append the following lines: Edit /etc/sysctl.d/9999-disable-core-dump.conf: * /bin/false exits with a failure status code. The default value for kernel.core_pattern

libvirt

anonymous@undisclosed.example.com (Anonymous) — Sat, 04 Apr 2026 21:12:31 +0000

Setup bridged networking with systemd-networkd Restart systemd-networkd and verify. Define, start, and verify the network.

lutris

anonymous@undisclosed.example.com (Anonymous) — Fri, 13 Feb 2026 09:53:29 +0000

Add game-performance * Go to Preferences -> Global options. * Enable Advanced mode. * Scroll down to Command prefix. * Add game-performance to command prefix.

lvm

anonymous@undisclosed.example.com (Anonymous) — Fri, 13 Feb 2026 09:53:44 +0000

Add disk to LVM volume Create a new physical volume on the new disk: Add the newly created physical volume to an existing logical volume: Extend the /dev/almalinux/root to create a total 1000GB: Grow the filesystem of the root volume:

main

anonymous@undisclosed.example.com (Anonymous) — Sat, 14 Mar 2026 20:22:37 +0000

This is my practical knowledge base. The intended audience is mostly me, but some notes are written in a tutorial-like format. I can make no guarantees that any of the content here will work for others. If you break things after following something here, you’re the one responsible.

minio

anonymous@undisclosed.example.com (Anonymous) — Fri, 13 Feb 2026 09:54:01 +0000

Bucket replication to remote MinIO instance Use mcli to create aliases for the local and remote instances. Add configuration rule on source bucket for nas-local to nas-remote to replicate all operations in an active-active replication setup. Show replication status.

neovim-cheatsheet

anonymous@undisclosed.example.com (Anonymous) — Fri, 13 Feb 2026 09:54:30 +0000

NERDCommenter Mode Keybind Action normalSPACE + cc NERDCommenterComment normalSPACE + c + SPACENERDCommenterToggle normalSPACE + cm NERDCommenterMinimal normalSPACE + cn NERDCommenterNested normalSPACE + c$

networking

anonymous@undisclosed.example.com (Anonymous) — Fri, 13 Feb 2026 09:54:55 +0000

Disable IPv6 on Debian Edit /etc/sysctl.conf. Apply the changes. Disable IPv6 on Fedora Rename network interface when using systemd-networkd Create a udev rule at /etc/udev/rules.d/70-my-net-names.rules. Using 70-my-net-names.rules as the filename ensures the rule is ordered before

nextcloud

anonymous@undisclosed.example.com (Anonymous) — Fri, 13 Feb 2026 09:55:15 +0000

Migrating Install dependencies. Setup the database. On the original machine, put Nextcloud into maintenance mode. " Wait 6-7 minutes for the sync clients to register the server is in maintenance mode before proceeding." Stop the web server that runs Nextcloud.

nfs

anonymous@undisclosed.example.com (Anonymous) — Fri, 13 Feb 2026 09:55:46 +0000

Setup NFS server on Debian Configure NFSv4 in /etc/default/nfs-common. Configure NFSv4 in /etc/default/nfs-kernel-server. Disable NFSv2 and NFSv3. Configure Firewalld. Setup pseudo filesystem and exports. Add exported directory to /etc/exports

nmap

anonymous@undisclosed.example.com (Anonymous) — Fri, 13 Feb 2026 09:56:10 +0000

Target specification Example Description nmap 192.168.1.1 Scan a single IP nmap 192.168.1.1 192.168.2.1Scan specific IPs nmap 192.168.1.1-254 Scan a range nmap scanme.nmap.org

orangepi5plus

anonymous@undisclosed.example.com (Anonymous) — Fri, 13 Feb 2026 09:56:27 +0000

Disable blinky LEDs Edit /etc/udev/rules.d/led_control.rules. Reboot the system.

packet-tracer

anonymous@undisclosed.example.com (Anonymous) — Fri, 13 Feb 2026 09:56:43 +0000

Fix GUI issues with KDE Plasma dark theme * Right-click on Menu button. * Click Edit Applications. * Select Packet Tracer. * Add XDG_CONFIG_HOME=/home/jas/.config-pt to Environment variables. * Save.

parallel

anonymous@undisclosed.example.com (Anonymous) — Fri, 13 Feb 2026 09:57:19 +0000

Pulling files from remote server with rsync To transfer just the files: To transfer the entire directory: Pushing files to remote server with rsync To transfer just the files: Running the same command on multiple remote hosts

postgresql

anonymous@undisclosed.example.com (Anonymous) — Fri, 13 Feb 2026 10:10:41 +0000

Change password for user Update password auth method to SCRAM Edit /etc/postgresql/16/main/postgresql.conf. Restart postgresql.service. At this point, any services using the old MD5 auth method will fail to connect to their PostgreSQL databases.

qcow2

anonymous@undisclosed.example.com (Anonymous) — Fri, 13 Feb 2026 10:11:06 +0000

Mount qcow2 image Enable NBD on the host. Connect qcow2 image as a network block device. Find the VM’s partitions. Mount the partition from the VM. To unmount: Resize qcow2 image Install guestfs-tools (required for virt-resize command).

qemu

anonymous@undisclosed.example.com (Anonymous) — Fri, 13 Feb 2026 10:11:30 +0000

Take snapshot of VM Ensure qemu-guest-agent is installed inside the VM. Otherwise omit the --quiesce flag, but when you restore the VM it will be as if the system had crashed. Not that big of a deal since the VM’s OS should flush required data and maintain consistency of its filesystems.

raid

anonymous@undisclosed.example.com (Anonymous) — Fri, 13 Feb 2026 10:11:54 +0000

Mounting RAID1 mirror * /dev/sda1 * /dev/sdb1 Assemble the RAID array. Mount the RAID device. Configure msmtp for mdmonitor.service (Ubuntu 24.04) Edit /etc/msmtprc. Edit /etc/mdadm.conf. Rename sendmail and symlink msmtp to sendmail.

resident-evil-hd

anonymous@undisclosed.example.com (Anonymous) — Fri, 13 Feb 2026 10:12:18 +0000

Installation * Download Resident Evil Classic Triple Pack PC from archive.org. This contains the Sourcenext versions of all three games. * Install all three games using their installers. * Download the following files: * Biohazard PC CD-ROM Mediakite patch version 1.01 * Resident Evil Classic REbirth * Resident Evil 2 Classic REbirth * Resident Evil 3 Classic REbirth * Biohazard Mediakite * Resident Evil HD mod by TeamX * Resident Evil 2 HD mod by TeamX * Resident …

retropie

anonymous@undisclosed.example.com (Anonymous) — Fri, 13 Feb 2026 10:12:40 +0000

Bluetooth: protocol not available Add to /lib/systemd/system/bthelper@.service:

router

anonymous@undisclosed.example.com (Anonymous) — Fri, 13 Feb 2026 10:13:10 +0000

* Ubuntu 24.04 * Orange Pi 5 Plus * ISP router in bridge mode * Ethernet from ISP router -> Orange Pi 5 Plus WAN port * Ethernet from Orange Pi 5 Plus LAN port to switch Install packages Register router as Tailnet node. Netplan with DHCP WAN

rss

anonymous@undisclosed.example.com (Anonymous) — Fri, 13 Feb 2026 10:13:54 +0000

Source: Simple RSS, Atom, and JSON feed for your blog RSS Atom JSON Resources * The RSS 2.0 Specification * The Atom Syndication Format Specification * The JSON Feed Version 1.1 Specification * RSS and Atom Feed validator * JSON Feed validator

sidebar

anonymous@undisclosed.example.com (Anonymous) — Sat, 04 Apr 2026 21:15:28 +0000

Techne ---------- Notes * Apache * Arch Linux * Atop * Bash * Btrfs * CachyOS * Caddy * Cgit * DietPi * DRM * Fail2Ban * Fedora * Fedora Atomic * Firewalld * FreeBSD * Internet Archive * Kernel * Libvirt * Lutris * LVM * MinIO * Neovim Cheatsheet * Networking * Nextcloud * NFS * Nmap * Orange Pi 5+ * Packet Tracer * Parallel * PostgreSQL * Qcow2 * Qemu * RAID * Resident Evil HD * RetroPie * Router * RSS * Steam * Sy…

steam

anonymous@undisclosed.example.com (Anonymous) — Fri, 13 Feb 2026 10:14:11 +0000

Capturing and sharing Proton logs * Right-click on the game in Steam and select Properties. * Under Launch Options, add the following: game-performance To use CachyOS’s game-performance script to switch power profiles while a game is running, add the following to each Steam game’s Launch Options:

systemd

anonymous@undisclosed.example.com (Anonymous) — Fri, 13 Feb 2026 10:14:31 +0000

Install systemd-boot on Debian Check efibootmgr. Mount NFS share Create a unit file at /etc/systemd/system/mnt-backup.mount. The name of the unit file must match the Where directive. Ex. Where=/mnt/backup –> mnt-backup.mount.

tailscale

anonymous@undisclosed.example.com (Anonymous) — Fri, 13 Feb 2026 10:14:51 +0000

Using Codeberg as an OIDC provider " These steps also apply to Gitea and Forgejo instances." Requirements * Use moonshadow.dev for the domain. * Use hyperreal@moonshadow.dev for the email. This must be the primary email on your Codeberg, Gitea, or Forgejo account.

tutorials

anonymous@undisclosed.example.com (Anonymous) — Mon, 23 Feb 2026 18:57:15 +0000

Tutorials * Bluesky PDS with Podman on CentOS Stream 10 * Chimera Linux installation * Codeberg, Gitea, or Forgejo as OIDC provider for Tailscale * Create an RPM repository * Debian with LUKS2 on Btrfs with GRUB * Network-wide bullshit-blocking setup with Blocky and Tailscale * Restic with rest-server * Self-hosted container registry with web UI * Torrenting with a thick VNET jail on FreeBSD

ufw

anonymous@undisclosed.example.com (Anonymous) — Fri, 13 Feb 2026 10:15:27 +0000

Allow ports only on specific interface

weechat

anonymous@undisclosed.example.com (Anonymous) — Fri, 13 Feb 2026 10:15:39 +0000

Smart filter for JOIN, PART, QUIT

windows

anonymous@undisclosed.example.com (Anonymous) — Fri, 13 Feb 2026 10:15:56 +0000

* Download Windows 11 ISO from Microsoft and write to USB. * Boot into Windows setup utility. * Select Repair computer –> Troubleshoot –> Advanced –> Cmd prompt. This procedure assumes the following: * main disk is disk 0 * EFI partition is