cheat sheets.

$ cheat rails_rake_tasks
Also see `rake -T` (even better - not obsolete) 

-----

rake cache:clear                     # Clears all cached pages

rake db:bootstrap                    # Loads a schema.rb file into the 
                                       database and then loads the initial 
                                       database fixtures.

rake db:bootstrap:copy_default_theme # Copy default theme to site theme

rake db:migrate                      # Migrate the database through scripts in 
                                       db/migrate. Target specific version 
                                       with VERSION=x

rake db:schema:dump                  # Create a db/schema.rb file that can be 
                                       portably used against any DB supported
                                       by AR

rake db:schema:load                  # Load a schema.rb file into the database

rake db:bootstrap:load               # Load initial database fixtures (in 
                                       db/bootstrap/*.yml) into the current 
                                       environment's database.  Load specific  
                                       fixtures using FIXTURES=x,y

rake db:fixtures:load                # Load fixtures into the current    
                                       environment's database.  Load specific 
                                       fixtures using FIXTURES=x,y

rake db:sessions:clear               # Clear the sessions table

rake db:sessions:create              # Creates a sessions table for use with 
                                       CGI::Session::ActiveRecordStore

rake db:structure:dump               # Dump the database structure to a SQL
                                       file

rake db:test:clone                   # Recreate the test database from the 
                                       current environment's database schema

rake db:test:clone_structure         # Recreate the test databases from the 
                                       development structure

rake db:test:prepare                 # Prepare the test database and load the 
                                       schema

rake db:test:purge                   # Empty the test database

rake deploy                          # Push the latest revision into 
                                       production using the release manager

rake diff_from_last_deploy           # Describe the differences between HEAD 
                                       and the last production release

rake doc:app                         # Build the app HTML Files

rake doc:clobber_app                 # Remove rdoc products

rake doc:clobber_plugins             # Remove plugin documentation

rake doc:clobber_rails               # Remove rdoc products

rake doc:plugins                     # Generate documation for all installed  
                                       plugins

rake doc:rails                       # Build the rails HTML Files

rake doc:reapp                       # Force a rebuild of the RDOC files

rake doc:rerails                     # Force a rebuild of the RDOC files

rake edge                            # freeze rails edge

rake log:clear                       # Truncates all *.log files in log/ to 
                                       zero bytes

rake rails:freeze:edge               # Lock to latest Edge Rails or a specific 
                                       revision with REVISION=X (ex: 
                                       REVISION=4021) or a tag with TAG=Y (ex: 
                                       TAG=rel_1-1-0)

rake rails:freeze:gems               # Lock this application to the current 
                                       gems (by unpacking them into 
                                       vendor/rails)

rake rails:unfreeze                  # Unlock this application from freeze of 
                                       gems or edge and return to a fluid use 
                                       of system gems

rake rails:update                    # Update both configs, scripts and  
                                       public/javascripts from Rails

rake rails:update:configs            # Update config/boot.rb from your current 
                                       rails install

rake rails:update:javascripts        # Update your javascripts from your 
                                       current rails install

rake rails:update:scripts            # Add new scripts to the application 
                                       script/ directory

rake remote_exec                     # Execute a specific action using the  
                                       release manager

rake rollback                        # Rollback to the release before the 
                                       current release in production

rake show_deploy_tasks               # Enumerate all available deployment 
                                       tasks

rake stats                           # Report code statistics (KLOCs, etc) 
                                       from the application

rake test                            # Test all units and functionals

rake test:functionals                # Run tests for 
                                       functionalsdb:test:prepare

rake test:integration                # Run tests for 
                                       integrationdb:test:prepare

rake test:plugins                    # Run tests for pluginsenvironment

rake test:recent                     # Run tests for recentdb:test:prepare

rake test:uncommitted                # Run tests for 
                                       uncommitteddb:test:prepare

rake test:units                      # Run tests for unitsdb:test:prepare

rake tmp:cache:clear                 # Clears all files and directories in 
                                       tmp/cache

rake tmp:clear                       # Clear session, cache, and socket files 
                                       from tmp/

rake tmp:create                      # Creates tmp directories for sessions,
                                       cache, and sockets

rake tmp:pids:clear                  # Clears all files in tmp/pids

rake tmp:sessions:clear              # Clears all files in tmp/sessions

rake tmp:sockets:clear               # Clears all files in tmp/sockets

rake update_dialog_helper            # Copies the latest dialog.js to the 
                                       application's public directory
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