Informatic

{
  # [...]
  # Assuming failover IP being 1.2.3.4 and host primary IP being 5.6.7.8
  networking.interfaces.ens3.ipv4.addresses = [ {
    address = "1.2.3.4";
    prefixLength = 32;
  } ];

  networking.interfaces.ens3.ipv4.routes = [ {
    address = "5.6.7.254";

Informatic

# Reference:
# https://janus.conf.meetecho.com/docs/rest.html
# https://janus.conf.meetecho.com/docs/streaming.html

import requests
import json
import pprint
import random
import string

Informatic

{ stdenv, fetchurl, patchelf, makeWrapper, xorg, gcc, gcc-unwrapped, freetype, fontconfig, liberation_ttf }:

stdenv.mkDerivation rec {
   name = "IPMIView-${version}";
   version = "2.16.0";
   buildVersion = "190528";

   src = fetchurl {
    url = "https://www.supermicro.com/wftp/utility/IPMIView/Linux/IPMIView_${version}_build.${buildVersion}_bundleJRE_Linux_x64.tar.gz";
    sha256 = "0pz4q8vsnv6wqpiy6am333c2cgsdjmxc6w9vm4hi8qyaavfbq0w2";

Informatic

#!/usr/bin/env bash

# Creates local version tags based on cookbook metadata.rb change history
# Usage: bash tagify-cookbook [cookbook_name]

cookbook=${1:-some_cookbook}

git log --pretty=format:"%h" cookbooks/$cookbook/metadata.rb | while read ref; do
    tag="$cookbook-$(git show $ref:cookbooks/$cookbook/metadata.rb | grep "^version '" | sed -E "s/.* '(.*)'/\1/g" )"
    echo "ref: $ref -> $tag";

Informatic

#
# A quick tip on how to set up rotating logging handler with
# automatic gzipping of rotated files. Tested on python 3.7
#
#
# Testing tip:
#   python gziplogging.py
#   touch example.log --date='2005/01/01'
#   python gziplogging.py
#   ls -lah *.log*

Informatic

This is just a dump of some interesting undocumented features of webOS (3.8 specifically, on early 2018 4k LG TV) and other development-related tips.

Homebrew app ideas

• OpenVPN frontend (OpenVPN itself is easily buildable and runs on webOS TVs: https://discord.com/channels/407937994037919756/835489130967859251/906943542457401395)
• App autostart manager - dynamically update arbitrary app config and register it as input (see Registering an app as an input)
• webos-vncserver frontend with autostart option
• Package hyperiond into Piccap directly
• Quick Screenshot (expose HTTP port that just returns PNG of current screen contents)
• Custom IR remote codes editor/updater/blaster

Informatic

#!/bin/sh

# Directory to store overlays in (one directory structure is created per overlay configured down below)
OVERLAY_BASE=/home/root/overlays

overlay() {
        set -e
        overlay_id="$(echo $1 | sed 's;/;__;g')"
        unset TARGET SOURCE FSTYPE OPTIONS
        eval $(findmnt -P $1)

Informatic

#!/bin/sh

# Directory to store overlays in (one directory structure is created per overlay configured down below)
OVERLAY_BASE=/var/lib/webosbrew/customca

overlay() {
        set -e
        overlay_id="$(echo $1 | sed 's;/;__;g')"
        unset TARGET SOURCE FSTYPE OPTIONS
        eval $(findmnt -P $1)

Informatic

Advanced Recursive Diffing™

Ever needed to diff two trees of files, while doing some preprocessing on modified files? Well - we've got a solution for you. Or rather... our long friend git has.

Turns out it's perfectly legal to just use git diff --no-index on directories outside of (any) git repository. With that, we can (ab-)use built in git diff per-path/extension preprocessing feature.

Informatic

  networking.networkmanager = {
    enable = true;

    # Let's just use networkmanager for modem support for now
    unmanaged = [ "wlan0" ];
  };

  systemd.services.NetworkManager.requires = [ "ModemManager.service" ];
  systemd.services.ModemManager.requires = [ "rmtfs.service" ];