$CommandLine
is a list of strings giving the elements of the original operating system command line with which the current instantiation of the Wolfram Language was invoked.
Examples
Basic Examples (1)
Typical $CommandLine when using the notebook interface on Windows:
Wolfram Research (1988), $CommandLine, Wolfram Language function, https://reference.wolfram.com/language/ref/$CommandLine.html.
Text
Wolfram Research (1988), $CommandLine, Wolfram Language function, https://reference.wolfram.com/language/ref/$CommandLine.html.
CMS
Wolfram Language. 1988. "$CommandLine." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/$CommandLine.html.
APA
Wolfram Language. (1988). $CommandLine. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/$CommandLine.html