Sets the environment variable variable in the environment of
processes launched from this launcher.
On UNIX, both the variable's name and value can be arbitrary byte
strings, except that the variable's name cannot contain '='.
On Windows, they should be in UTF-8.
Sets the environment variable variable in the environment of processes launched from this launcher.
On UNIX, both the variable's name and value can be arbitrary byte strings, except that the variable's name cannot contain '='. On Windows, they should be in UTF-8.