zhum

class ItemUploader < CarrierWave::Uploader::Base
  require 'carrierwave/orm/activerecord'
  include CarrierWave::RMagick

  if Rails.env.test?
    storage :file
  else
    storage :fog
  end

zhum

ffmpeg

Converting Audio into Different Formats / Sample Rates

Minimal example: transcode from MP3 to WMA:
ffmpeg -i input.mp3 output.wma

You can get the list of supported formats with:
ffmpeg -formats

Convert WAV to MP3, mix down to mono (use 1 audio channel), set bit rate to 64 kbps and sample rate to 22050 Hz:

zhum

require 'dry-validation'

schema = Dry::Validation.Schema do
  required(:field_1).filled(:str?)
  required(:field_2).filled(:int?)

  rule(field_2_depends_on_field_1: [:field_1, :field_2]) do |field_1, field_2|
    field_1.eql?('Foo').then(field_2.eql?(0)) & field_1.eql?('Bar').then(field_2.eql?(1))
  end
end

zhum

#!/bin/sh
# Check if an IP address is listed on one of the following blacklists
# The format is chosen to make it easy to add or delete
# The shell will strip multiple whitespace

BLISTS="
bl.score.senderscore.com
bl.mailspike.net
bl.spameatingmonkey.net
b.barracudacentral.org

zhum

#!/usr/bin/sh
# PulseAudio setup for recording osm radio from skype and mic

function rec_start() {
	IP=127.0.0.1
	PASSWORD=password
	DATE=$(date +%y%m%d-%H%M)

	# Initializing microphone
	MIC_ID=$(pactl list short sources|grep GoMic|grep input|cut -f 1)