path_split: Split an environment variable or string.

Usage: path_split [-s|-c splitchar] [<env var or string>] 

Options:
	-s 	Treat last arg as string to split (otherwise
		use environment variable of that name, default
		is PATH).

	-c <c>	Use "c" as the splitchar. (can be any string)

	-r <r>	Use "r" as the regex to split upon.

Notes: