atomic_write(file_name, temp_dir = Dir.tmpdir) public

Write to a file atomically. Useful for situations where you don’t want other processes or threads to see half-written files.

File.atomic_write('important.file') do |file| file.write('hello') end

If your temp directory is not on the same filesystem as the file you’re trying to write, you can provide a different temporary directory.

File.atomic_write('/data/something.important', '/data/tmp') do |file| file.write('hello') end
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