André Durão andredurao

Each of these commands will run an ad hoc http static server in your current (or specified) directory, available at http://localhost:8000. Use this power wisely.

Discussion on reddit.

Python 2.x

$ python -m SimpleHTTPServer 8000

People

`:bowtie:`	😄 `:smile:`	😆 `:laughing:`
😊 `:blush:`	😃 `:smiley:`	☺️ `:relaxed:`
😏 `:smirk:`	😍 `:heart_eyes:`	😘 `:kissing_heart:`
😚 `:kissing_closed_eyes:`	😳 `:flushed:`	😌 `:relieved:`
😆 `:satisfied:`	😁 `:grin:`	😉 `:wink:`
😜 `:stuck_out_tongue_winking_eye:`	😝 `:stuck_out_tongue_closed_eyes:`	😀 `:grinning:`
😗 `:kissing:`	😙 `:kissing_smiling_eyes:`	😛 `:stuck_out_tongue:`

PSQL

Magic words:

psql -U postgres

Some interesting flags (to see all, use -h or --help depending on your psql version):

-E: will describe the underlaying queries of the \ commands (cool for learning!)
-l: psql will list all databases and then exit (useful if the user you connect with doesn't has a default database, like at AWS RDS)

Get started

Install virtualbox and the extension pack:

brew install --cask docker virtualbox virtualbox-extension-pack

Download the ubuntu server image and create a VBox for it, the rest of the readme assumes it is named "Ubuntu Server".

Enable SSH

The netfilter hooks in the kernel and where they hook in the packet flow

The figure below calls out

The netfilter hooks
The order of table traversal

	#------------------------------------------------------------------------------
	# Rotinas para verificação de CPF e CNPJ
	# Linguagem: Ruby
	# Escrito por: André Camargo < [email protected] > http://blog.boaideia.inf.br
	# Use, copie, melhore a vontade! Patches são bem-vindos...
	#------------------------------------------------------------------------------
	def check_cpf(cpf=nil)
	return false if cpf.nil?

	nulos = %w{12345678909 11111111111 22222222222 33333333333 44444444444 55555555555 66666666666 77777777777 88888888888 99999999999 00000000000}