TEMPORARYFILE
Temporary file
Temporary files, or foo files, are files created to temporarily contain information while a new file is being made. It may be destroyed by computer programs for a variety of purposes; principally when a program cannot allocate enough memory for its tasks, when the program is working on data bigger than the architecture's address space, or as a primitive form of inter-process communication.The above text is a snippet from Wikipedia: Temporary file
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