is a string giving the type of operating system under which Mathematica is being run.


  • Typical values for $OperatingSystem are , , and .
  • You can use $OperatingSystem to get an idea of what external commands will be available from within Mathematica.
  • $OperatingSystem typically has the same value for different versions or variants of a particular operating system.

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Basic Examples (1)Basic Examples (1)

Programmatically determine the host operating system:

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