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Environment["var"]
gives the value of an operating system environment variable.


Environment
Environment["var"]
gives the value of an operating system environment variable.
Details

- The values of environment variables are returned by Environment as strings.
- Environment returns $Failed if it cannot find a value for the operating system variable you requested.
- The behavior of Environment depends on the computer system you are using.
Examples
Basic Examples (1)
Tech Notes
History
Introduced in 1988 (1.0)
Text
Wolfram Research (1988), Environment, Wolfram Language function, https://reference.wolfram.com/language/ref/Environment.html.
CMS
Wolfram Language. 1988. "Environment." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/Environment.html.
APA
Wolfram Language. (1988). Environment. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/Environment.html
BibTeX
@misc{reference.wolfram_2025_environment, author="Wolfram Research", title="{Environment}", year="1988", howpublished="\url{https://reference.wolfram.com/language/ref/Environment.html}", note=[Accessed: 08-August-2025]}
BibLaTeX
@online{reference.wolfram_2025_environment, organization={Wolfram Research}, title={Environment}, year={1988}, url={https://reference.wolfram.com/language/ref/Environment.html}, note=[Accessed: 08-August-2025]}