What are temporary files?

Temporary file

A temporary file or temp file, alternatively referred to as a foo file, is a file created to hold data while a file is being created or changed. The temporary file is removed after the software is closed. Store and transfer data across temporary files, maintain configurations, help restore missing data, and manage multiple users.


How are temporary files named?

Depending on the software and operating system used, a temporary file name differs. Microsoft Windows and Windows applications, for instance, also create a file as a temporary file with a .tmp file extension. In the same directory as the text, programs such as Microsoft Word can construct a temporary hidden file starting with a tilde and a dollar sign (e.g., ~$example.doc). Linux programs can build temporary files with the file extension .foo.


Where are temporary files stored?

Depending on the software and operating system, the location of a temporary file varies as well. With Microsoft Windows, a temporary directory has always been in some form. Early versions of Windows used the directory C:\Windows\Temp, and new versions of Windows save the temp directory in the folder App Data. Also, many applications do not use temporary folders for operating systems and may instead store temporary files in a folder in the program folder.


Is it safe to delete temporary files?

Yes. Temporary files are intended to temporarily store information and do not depend on the data contained in the file. Deleting a temporary file that is in use can, however, trigger program errors. Many programs lock the file when in use to help avoid problems, to prevent it from being removed. When a temporary file is generated by a program, it is removed after the document or program that uses the temporary file is closed. If all the programs are closed and there are still temporary files, they can all be removed safely. If the temporary file is required again after it has been removed, it will be recreated when the software is revived.

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