scottlingran

$ psql -U postgres

### CREATION w/o Password
$ createuser
# fill shit in
$ createdb <databasename>
$ psql -U postgres
$ alter user <username>;
# ALTER USER

scottlingran

$ rails new <name> -T -d postgresql
# makes new project with no tests and postgresql database

scottlingran

### create new column in database model
$ rails generate migration add_column_to_<modelname> <column>:<class>
$ rake db:migrate

### drop a table from the database
$ rails c
$ ActiveRecord::Base.connection.drop_table :your_table_name

### using heroku

scottlingran

# Some cool stuff

begin
  # code
rescue #error message
  # code to what next
  retry # if you want to run begin again
end

scottlingran

### find things in your table
Model.find_by_<key>(value) # Limits 1
Model.where(:key => value) # No limit, returns all

example = Model.find_by_<key>(key)
example.key = 'value' # this will return the key/value and update it

### find/create by
Model.find_or_create_by_<key>(key)

scottlingran

YAML::ENGINE.yamler = 'syck'

scottlingran

$ curl -u 'USER:PASS' https://api.github.com/user/repos -d '{"name":"REPO"}'
$ git remote add origin [email protected]:USER/REPO.git
$ git push origin master

scottlingran

Start manually:

$ pg_ctl -D /usr/local/var/postgres -l /usr/local/var/postgres/server.log start

Stop manually:

$ pg_ctl -D /usr/local/var/postgres stop -s -m fast

scottlingran

require 'net/http'
require 'open-uri'
require 'awesome_print'
require 'nokogiri'

LINK = "http://www.ozbargain.com.au/live"

html = open(LINK).read
noko = Nokogiri::HTML(html)

scottlingran

Edit file on Instance

$ vi /usr/lib/ec2-ami-tools/lib/ec2/amitools/util.rb

Change to this method

def gen_ident()
  (0...19).map{(65+rand(26)).chr}.join
end