Gwyneth Llewelyn GwynethLlewelyn

This assumes ugrep is installed. ugrep may not be the absolutely fastest grep replacement out there, but it has a substantially faster regular expression engine (invented by Genivia) than most alternatives which usually rely upon Boost (which is fast already!).

It also assumes that whois is installed and listed in $PATH. Adapt as appropriate.

The final sort | uniq may be replaced with sort --unique (if that option is available) and should improve things a little.

LOGFILE=/var/path/something
ug -e '(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})' -P --format="%1%~" $LOGFILE | uniq | while read -r line; do whois -H $line | ug -e '(AS\d{1,6})' -P --format="%1%~"; done | sort | uniq

Explaining rolling window

Basic Flowchart

flowchart TD
    A[Request new task] --> B{Check last 3 task times}
    B -->|All > 72h| C[Eligible]
    B -->|Some < 72h| D[Wait until oldest is >72h]

    C --> E{Check 15-day average}

An attempt to get all command line configurations working to manually compile Homebrew's Node.js for macOS Big Sur

  ./configure --without-npm --with-intl=system-icu --shared-libuv --shared-nghttp2 --shared-openssl --shared-zlib --shared-brotli --shared-cares --prefix=/usr/local/Cellar/node/23.3.0 --use-prefix-to-find-headers --openssl-use-def-ca-store --enable-lto

Notes

Use default XCode compiler & linker (reset appropriate variables!)

convert gw-original-1400.png -write mpr:img +delete \( mpr:img -resize 1280x +write gw-1280.png \) \( mpr:img -resize 1024x +write gw-1024.png \) \( mpr:img -resize 512x +write gw-512.png \) \( mpr:img -resize 500x +write gw-500.png \) \( mpr:img -resize 300x +write gw-300.png \) \( mpr:img -resize 256x +write gw-256.png \) \( mpr:img -resize 160x +write gw-160.png \) \( mpr:img -resize 128x +write gw-128.png \) \( mpr:img -resize 100x +write gw-100.png \) \( mpr:img -resize 90x +write gw-90.png \) \( mpr:img -resize 80x +write gw-80.png \) \( mpr:img -resize 64x +write gw-64.png \) \( mpr:img -resize 50x +write gw-50.png \) \( mpr:img -resize 40x +write gw-40.png \) \( mpr:img -resize 32x +write gw-32.png \) \( mpr:img -resize 16x +write gw-16.png \) null:
h

Convert files from ISO-8859-1 (Latin-1) to UTF-8, recursively

This requires recode to be installed (brew install recode or apt install recode).

The example shows HTML files only. Adjust as required.

Process:

(Recursively) find all files that end with *.htm or *.html.
For each match, check its file type using file.

	#!/bin/bash
	# Shell script for a systemd unit to figure out if a service is already
	# running.
	# Useful to check on ExecPre if a required service is ready, and, if not,
	# wait until it is. Particularly effective to check for MySQL/MariaDB.
	#
	# Usage:
	# `is-service-up.sh [service name] [sleeping time in seconds] [grep search string to check]
	# where only $1 is mandatory, the rest optional
	# e. g. `is-service-up.sh some.service 60 ' active'`

	100VG 100 Voice Grade [technology]
	10GE 10 GigaBIT Ethernet (ethernet, BIT)
	1D2B 1 D-channel 2 B-channels (BRI, ISDN)
	2B1D 2 B-channels 1 D-channel (BRI, ISDN)
	2S2D Double Sided - Double Density (FDD)
	3DC 3D Consortium (org., Sanyo, Sharp, Sony, ...)
	3DDDI 3D Device Dependent Interface (MS), "3D DDI"
	3DRAM 3 Dimensional Random Access Memory (RAM)
	3GIO Third Generation Input/Output (PCIe)
	3GIP 3rd Generation . Internet Protocol (org., IP, GPRS, WLAN, mobile-systems), "3G.IP"

	#!/bin/sh
	# Grab all possible textures from LL's own CDN, referenced by UUID from LLSD backups.
	# Usage: Go to where your LLSD XML files are stored; run script. Wait a few seconds. Done!
	# (cc) 2024–2025 by Gwyneth Llewelyn. Some rights reserved.
	# Distributed under the MIT license: https://gwyneth-llewelyn.mit-license.org
	# Second Life® is a registered trademark of Linden Lab. No copyright infringement is intended.
	#
	# `ug` below is `ugrep`, a `grep` replacement, which you can get from here: <https://ugrep.com/>
	# All others should be standard on any Un*x system.
	# `curl` is usually available on all systems as well, but, if not, you can grab it from <https://curl.se/>

	#! /usr/bin/env bash
	# Bash needed for PIPESTATUS array
	# Author: Viktor Dukhovni <openssl-users@dukhovni.org> (@ietf-dane)
	# Date: 28 December 2015
	# From https://community.letsencrypt.org/t/making-a-dane-tlsa-to-work-with-le/2129/8
	# See also https://community.letsencrypt.org/t/please-avoid-3-0-1-and-3-0-2-dane-tlsa-records-with-le-certificates/7022

	extract() {
	case "$4" in
	0) openssl x509 -in "$1" -outform DER;;

	for file in *.png ; do
	magick "$file" -define webp:lossless=true -define webp:auto-filter=true -define webp:filter-strength=50 -define webp:image-hint=picture -define webp:method=6 -define webp:thread-level=1 "${file%.*}.webp" ;
	done