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Common Options

-#, --progress-bar Make curl display a simple progress bar instead of the more informational standard meter.

-b, --cookie <name=data> Supply cookie with request. If no =, then specifies the cookie file to use (see -c).

-c, --cookie-jar <file name> File to save response cookies to.

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# FOR BUSY JOBS
# take the process_id from the /busy page in sidekiq and kill the longest running one.
workers = Sidekiq::Workers.new
long_process_id = 'integration.3:4:71111aaa111' # Eg: 'integration.3:4:71d1d7f4ef5a'
workers.each do |process_id, thread_id, work|
  process = Sidekiq::Process.new('identity' => process_id)
  process.stop! if process_id == long_process_id
end

# FOR SCHEDULED JOBS

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https://docs.github.com/en/authentication/managing-commit-signature-verification/generating-a-new-gpg-key Git GPG Setup for macOS Packages Install gnupg brew install gpg Install passphrase entry dialogs brew install pinentry-mac Generate a key Follow instructions, select default via Enter if unsure.

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-----BEGIN PGP PUBLIC KEY BLOCK-----
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# Download and install the public signing key:

wget -qO - https://artifacts.elastic.co/GPG-KEY-elasticsearch | sudo gpg --dearmor -o /usr/share/keyrings/elasticsearch-keyring.gpg


# Install the apt-transport-https packages

sudo apt-get install apt-transport-https

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Linux NetFilter, IP Tables and Conntrack Diagrams

IPTABLES TABLES and CHAINS

IPTables has the following 4 built-in tables.

1) Filter Table

Filter is default table for iptables. So, if you don’t define you own table, you’ll be using filter table. Iptables’s filter table has the following built-in chains.

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# sudo gem install bson
# sudo gem install bson_ext
# sudo gem install yajl-ruby
# sudo gem install json
# sudo gem install msgpack

require 'rubygems'
require 'benchmark'
require 'yaml'
require 'bson'

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ganked from unreadable scribd doc here: http://cleancoder.posterous.com/what-killed-waterfall-could-kill-agile

What Killed Waterfall could Kill Agile.

Robert C. Martin
20 Nov, 2010

In 1970 a software engineer named Dr. Winston W. Royce wrote a seminal paper entitled Managing the Development of Large Software Systems. This paper described the software process that Royce felt was appropriate for large-scale systems. As a designer for the Aerospace industry, he was uniquely qualified.

He began the paper by setting up a straw-man process to knock down. He described this naïve process as “grandiose”. He depicted it with a simple diagram on an early page of his paper. Then the paper methodically tears this “grandiose” process apart. In the end, Royce proposed a far more nuanced and insightful approach, leaving the reader to giggle at the silliness of the “grandiose” model.

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# activerecord-3.0.0/lib/active_record/connection_adapters/mysql_adapter.rb
# Maps logical Rails types to MySQL-specific data types.
def type_to_sql(type, limit = nil, precision = nil, scale = nil)
  return super unless type.to_s == 'integer'

  case limit
  when 1; 'tinyint'
  when 2; 'smallint'
  when 3; 'mediumint'
  when nil, 4, 11; 'int(11)'  # compatibility with MySQL default

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gem install mysql2 -v '0.4.4' -- \
 --with-mysql-lib=$(brew --prefix mysql@5.7)/lib \
 --with-mysql-dir=$(brew --prefix mysql@5.7) \
 --with-mysql-config=$(brew --prefix mysql@5.7)/bin/mysql_config \
 --with-mysql-include=$(brew --prefix mysql@5.7)/include