Wolfram Language & System 11.0 (2016)|Legacy Documentation

This is documentation for an earlier version of the Wolfram Language.View current documentation (Version 11.2)


is a string describing the type of computer system on which the Wolfram System is being run.


  • $System typically consists of words separated by spaces.
  • Typical values are "Microsoft Windows", "Mac OS X", and "Linux".
  • $SystemID provides a more succinct version of the same basic information.
Introduced in 1988