These functions are exported by the
This function returns the value (a string) of the environment variable called variable-name. If the specified variable doesn’t exist false is returned.
(getenv "OSTYPE") ⇒ "Linux"
This function sets the value of the environment variable called variable-name to new-value. new-value can either be a string containing the new contents of the variable or false, in which case the environment variable is deleted.
Deletes any variable in
See also Process Objects for the description of the