An if statement can be used to specify part of a recipe to be used when certain conditions are met. The if modifier expression must be a single line, and else and elsif statements are not supported. A case statement can be used to handle a situation where there are a lot of conditions. Use the when statement for each condition, as many as are required. Use the Ruby File class in a recipe.
Because Chef has the file resource, use File to use the Ruby File class. In non-Chef Ruby, the syntax is include without the : prefix , but without the : prefix Chef Infra Client will try to find a provider named include.
Using the : prefix tells Chef Infra Client to look for the specified class that follows. The include? For example, using the include? Although not strictly a Chef style thing, please always ensure your user. Cookbook and custom resource names should contain only alphanumeric characters. A hyphen - is a valid character and may be used in cookbook and custom resource names, but it is discouraged.
Use a short organizational prefix for application cookbooks that are part of your organization. Name attributes after the recipe in which they are primarily used. However, if readability of code is desired, such as ensuring that a reader understands what the default action is for a custom resource or stating the action for a resource whose default may not be immediately obvious to the reader, specifying the default action is recommended:. Chef Workstation includes Cookstyle for linting the Ruby-specific and Chef-specific portions of your cookbook code.
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