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

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

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

zhum

Summary

Опиши в 3-4 предложениях что происходило и почему. Это информативное представление о факапе с высоты птичьего полета, оно должно быть понятно любому человеку без контекста.

Ущерб

Качественная оценка Какая функциональность не работала, насколько долго, у кого. Была ли потеря или порча данных. Выбери поле справа.

Количественная оценка

zhum

#!/bin/sh

# This script will migrate schema and data from a SQLite3 database to PostgreSQL.
# Schema translation based on http://stackoverflow.com/a/4581921/1303625.
# Some column types are not handled (e.g blobs).

SQLITE_DB_PATH=$1
PG_DB_NAME=$2
PG_USER_NAME=$3

zhum

def interval prefix, str ,postfix
  if /(\d+)-(\d+)/.match str
    w="%0#{$1.size}d"
    $1.to_i.upto($2.to_i).map {|i| "#{prefix}#{w % i}#{postfix}"}.join ','
  else
    "#{prefix}#{str}"
  end
end

#

zhum

#!/bin/bash

cat << EOF > /etc/yum.repos.d/xCAT-core.repo
[xcat-2-core]
name=xCAT 2 Core packages
baseurl=http://xcat.org/files/xcat/repos/yum/2.13/xcat-core
enabled=1
gpgcheck=1
gpgkey=http://xcat.org/files/xcat/repos/yum/2.13/xcat-core/repodata/repomd.xml.key
EOF

zhum

module Comments
  class ModelsList
    if Rails.env.production?
      def self.to_a
        @@to_a ||= load
      end

      def self.to_a_labels
        @@to_a_labels ||= to_a.map { |m| "#{m}|#{eval(m).model_name.human}"}
      end

zhum

#!/usr/bin/env bash
#
# YOUR DESCRIPTION HERE
# 
# 
# check it with https://www.shellcheck.net/

# set -e = FAIL if any command fails
# set -o pipefail = FAIL if any command in the pipe fails
# set -u = FAIL if any variable is used, but not initialized

zhum

#!/usr/bin/env bash
# latest version is here: https://gist.github.com/zhum/b00b6c55e0559d0684796191eecf21d9
# shellcheck disable=all

#-------------- options --------------

set -e          # stop on any command fail
set -E          # generate ERR exception on aliases, functions, and commands in if/while/until conditions
set -u          # stop on any unbound variable
set -o pipefail # stop on any fail with pipe

zhum

user www-data;
worker_processes auto;
pid /run/nginx/nginx.pid;  # only line changed from default
include /etc/nginx/modules-enabled/*.conf;

events {
	worker_connections 768;
	# multi_accept on;
}