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Prototype: and(...)
Return type: string
Description: Returns whether all arguments evaluate to true.
Arguments: A list of classes and class expressions
Example:
commands:
"/usr/bin/generate_config $(config)"
ifvarclass => and(not(fileexists("/etc/config/$(config)")), "generating_configs");
Notes:
History: Was introduced in 3.2.0, Nova 2.1.0 (2011)