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Mathematica > Directories & Directory Operations >

Built-in Mathematica Symbol

$TemporaryPrefix

$TemporaryPrefix
is a string that gives the path and beginning of the name for files and directories that are created by OpenWrite and CreateDirectory when no explicit file is specified.

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On Unix systems, the default setting for $TemporaryPrefix is typically /tmp/m.

$TemporaryPrefix can be reset.

Mathematica does not automatically delete files in directories specified by $TemporaryPrefix, although the operating system may do so.