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Shell Commands

System informations

$ lsb_release -a

Discovering the UUID of a device

Run

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# list generators
$ rails generate

# É importante fazermos algumas considerações para os casos de se trabalhar com namespace:
# O nome do arquivo com _generator.rb deve ter o mesmo nome da classe;
  # sample_generator.rb => class SampleGenerator
  # A classe deve ficar numa pasta com o nome do primeiro módulo;

# lib/generators/error_page/install_generator.rb

module ErrorPage

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# Guia de Instalação: https://github.com/rails-sqlserver/activerecord-sqlserver-adapter/wiki/Using-TinyTDS

# requirements
# freetds-dev
$ sudo apt-get install -fyu freetds-dev

# Intale as gems "tiny_tds" e "activerecord-sqlserver-adapter"

# Obs.: O método "set_table_name" poderá ser usado para definir um outro nome para as tabelas no modelo

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# Estarta o servidor python na aplicação
$ python -m SimpleHTTPServer <port>

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# lib/tasks/task_example.rake
namespace :namespace_1 do
  # without this line the task will not be enumerated in rake -T
  desc "Description"

  task :task_name, [:params] => [:environment] do |t, arbitrary|
    # it works as splat operator
    params = arbitrary.extras.unshift arbitrary[:params] ? arbitrary[:params] : "no params"

p params

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Installing

For the Java works, you should install the JDK (Java Development Kit) and the JRE (Java Runtime Environment).

The JDK is the VM (Virtual Machine) of the Java. It’s responsible for compile the source code that will be executed.

The JRE is responsible for the environment, how to define variables and read them.

• JDK

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-- SQLite
DELETE FROM [table]
DELETE FROM sqlite_sequence

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Configurations

git config

Proxy

Use global configuration with --global flag.

$ git config --global https.sslBackend openssl