Temporary files

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File Format
Name Temporary files
Extension(s) .tmp, .bak


Temporary files are used by applications for different purposes, such as saving state or caching. Unix-style operating systems generally have a /tmp/ directory to hold temporary files, and Windows uses a Temp/ directory beneath the Windows directory. However, temporary files might be created in other places as well.

Programs might use files with a .bak extension to store temporary backup copies of the previous version of a file that has been modified (which might be of any format), and files with the .tmp extension, as well as various extensions with special characters such as $ and _ which rarely occur in file extensions otherwise, might be used for temporary work files of various sorts.


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