kontza’s gists

kontza / multicaster.py

Last active February 10, 2022 07:35

A simple multicast sender/listener. Adapted from https://pymotw.com/3/socket/multicast.html to contain both the sender and the listener in the same script.

	#!/usr/bin/env python

	import argparse
	import datetime
	import socket
	import struct
	import time


	def listener(args):

kontza / 20-pull-the-brake.fish

Created April 9, 2020 05:50

This is how I transcode DVB-T recordings. Created a gist out of it to demo how Fish's `argparse` works. Fish rulez!

	# Special functions to make video encoding easier.
	set -g __default_encode "Playstation 720p30"
	set -g __high_quality_encode "HQ 1080p30 Surround"

	function pull_the_brake_help
	for line in "Usage: [options] files..." \
	"Options:" \
	" -a/--start-at <number>" \
	" Start encoding at a given offset in seconds." \
	" -c/--crop <top:bottom:left:right>" \

kontza / loop-it.fish

Created September 25, 2020 11:50

A sample Fish-script for processing a list file line by line and omitting lines starting with a '#'.

	while read LINE
	set -l LINE (string trim $LINE)
	if string match -rqv '^#' $LINE
	echo ">>> Processing line '$LINE'..."
	end
	end < list.file

kontza / loop-it.sh

Created September 25, 2020 11:56

A sample Bash-script for processing a list file line by line and omitting lines starting with a '#'.

	while IFS= read -r LINE
	do
	LINE=$(echo $LINE\|xargs)
	# The next line's magic bypasses lines starting with a '#'.
	[[ $LINE =~ ^#.* ]] && continue
	echo ">>> Processing '$LINE'..."
	done < list.file

kontza / list-java-ports.sh

Last active June 11, 2021 07:21

	clear && \
	sudo netstat -tUlpn\|\
	awk '/java/{gsub(/\/java/, "", $7);gsub(/^[0-9.]+\:/, "", $4);printf "%6s = ",$4; system("ps -o user,args -p " $7 " --no-headers")}'\|\
	sort

kontza / ssc.fish

Last active October 10, 2022 11:36

Change macOS iTerm background its font name and size based on the desired ssh hostname. This script is named `ssc` so that I can SSH into some host without these tweaks.

	#!/opt/local/bin/fish
	function set_bg
	osascript -e "tell application \"Terminal\" to set background color of window 1 to $argv[1]"
	end

	function set_profile
	osascript -e "tell application \"Terminal\" to set current settings of window 1 to settings set \"$argv[1]\""
	end

	function set_iterm_bg

kontza / db.sh

Created November 9, 2022 08:09

Extract DB specs from .pgpass and open a psql session there

	#!/bin/sh
	IFS=':' read -r -a PARTS <<< $(fgrep "$1" ~/.pgpass)
	if test -n "${PARTS[3]}";then
	psql -h ${PARTS[0]} -p ${PARTS[1]} -U ${PARTS[3]} ${PARTS[2]}
	else
	echo "No database defined! Cannot continue."
	fi

kontza / yaml2properties.py

Last active April 13, 2023 03:35

Convert either a given YAML file or a YAML from stdin into Java style properties. Requires click, flatdict & pyyaml.

	#!/usr/bin/env python3
	import click
	import flatdict
	import yaml
	import sys


	class DefaultToStdin(click.Argument):
	def __init__(self, args, *kwargs):
	kwargs["nargs"] = 1

kontza / main.go

Created December 21, 2023 08:38

Injecting data into Influx from a pre-named CSV file. Downsampled to 5 minutes.

	package main

	import (
	"bufio"
	"context"
	"log"
	"os"
	"strconv"
	"strings"
	"time"

kontza / snippet-wezterm.lua

Last active January 8, 2024 09:24

Change WezTerm background color based on SSH host; copy this snippet to your WezTerm config + define your own host_to_color mapping

	-- Hash char is here to make good editors show the color in situ.
	local host_to_color = {
	["main.*p"] = "#660000",
	["other.*q"] = "#660066",
	-- key = a pattern to match a hostname
	-- value = the color to use as pane background for the hostname
	}
	local colored_panes = {}
	wezterm.on("update-status", function(window, pane)
	local fg = pane:get_foreground_process_info() or {}

Juha Ruotsalainen kontza