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Test Your Knowledge in Computers #696
Difficulty: Medium
The Cathedral model, in which source code is available with each software release, but code developed between releases, is restricted to an exclusive group of software developers.
True or False?
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bundle-config(1) [debian man page]

BUNDLE-CONFIG(1)														  BUNDLE-CONFIG(1)

bundle-config - Set bundler configuration options SYNOPSIS
bundle config [name [value]] DESCRIPTION
This command allows you to interact with bundler's configuration system. Bundler retrieves its configuration from the local application (app/.bundle/config), environment variables, and the user's home directory (~/.bundle/config), in that order of priority. Executing bundle config with no parameters will print a list of all bundler configuration for the current bundle, and where that configura- tion was set. Executing bundle config <name> will print the value of that configuration setting, and where it was set. Executing bundle config <name> <value> will set that configuration to the value specified for all bundles executed as the current user. The configuration will be stored in ~/.bundle/config. BUILD OPTIONS
You can use bundle config to give bundler the flags to pass to the gem installer every time bundler tries to install a particular gem. A very common example, the mysql gem, requires Snow Leopard users to pass configuration flags to gem install to specify where to find the mysql_config executable. gem install mysql -- --with-mysql-config=/usr/local/mysql/bin/mysql_config Since the specific location of that executable can change from machine to machine, you can specify these flags on a per-machine basis. bundle config build.mysql --with-mysql-config=/usr/local/mysql/bin/mysql_config After running this command, every time bundler needs to install the mysql gem, it will pass along the flags you specified. CONFIGURATION KEYS
Configuration keys in bundler have two forms: the canonical form and the environment variable form. For instance, passing the --without flag to bundle install(1) bundle-install.1.html prevents Bundler from installing certain groups speci- fied in the Gemfile(5). Bundler persists this value in app/.bundle/config so that calls to Bundler.setup do not try to find gems from the Gemfile that you didn't install. Additionally, subsequent calls to bundle install(1) bundle-install.1.html remember this setting and skip those groups. The canonical form of this configuration is "without". To convert the canonical form to the environment variable form, capitalize it, and prepend BUNDLE_. The environment variable form of "without" is BUNDLE_WITHOUT. LIST OF AVAILABLE KEYS
The following is a list of all configuration keys and their purpose. You can learn more about their operation in bundle install(1) bun- dle-install.1.html. path (BUNDLE_PATH) The location on disk to install gems. Defaults to $GEM_HOME in development and vendor/bundler when --deployment is used frozen (BUNDLE_FROZEN) Disallow changes to the Gemfile. Defaults to true when --deployment is used. without (BUNDLE_WITHOUT) A :-separated list of groups whose gems bundler should not install bin (BUNDLE_BIN) Install executables from gems in the bundle to the specified directory. Defaults to false. gemfile (BUNDLE_GEMFILE) The name of the file that bundler should use as the Gemfile. This location of this file also sets the root of the project, which is used to resolve relative paths in the Gemfile, among other things. By default, bundler will search up from the current working directory until it finds a Gemfile. In general, you should set these settings per-application by using the applicable flag to the bundle install(1) bundle-install.1.html com- mand. You can set them globally either via environment variables or bundle config, whichever is preferable for your setup. If you use both, envi- ronment variables will take preference over global settings. June 2012 BUNDLE-CONFIG(1)

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