NoMethodError: undefined method `exists?’ for Chef::Resource::File:Class

When you create a Chef custom resource and use the File class, you need to make slight a change in the syntax you use.

In a Chef recipe you can use

if File.exists?("#{FileName}")

to check for the existence of a file. If we use the same line in a Chef custom resource, we get the error message:

NoMethodError: undefined method `exists?’ for Chef::Resource::File:Class

In a Chef custom resource, you need to add :: in front of the File class to make it work

The leading :: tells Chef not to look for the “File” class in the Chef namespace.

if ::File.exists?("#{FileName}")

 

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