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What is the best way to get a temporary directory with nothing in it using Ruby on Rails? I need the API to be cross-platform compatible. The stdlib tmpdir won't work.
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A utility class for managing temporary files. When you create a Tempfile object, it will create a temporary file with a unique filename. A Tempfile objects behaves just like a File object, and you can perform all the usual file operations on it: reading data, writing data, changing its permissions, etc.
TMPDIR is the canonical environment variable in Unix and POSIX that should be used to specify a temporary directory for scratch space. Most Unix programs will honor this setting and use its value to denote the scratch area for temporary files instead of the common default of /tmp or /var/tmp.
The Dir object has a method mktmpdir which creates a temporary directory:
require 'tmpdir' # Not needed if you are using rails. Dir.mktmpdir do |dir| puts "My new temp dir: #{dir}" end The temporary directory will be removed after execution of the block.
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The Dir#tmpdir function in the Ruby core (not stdlib that you linked to) should be cross-platform.
To use this function you need to require 'tmpdir'.
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