setenv
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.
Since
2.40
Parameters
variable
the environment variable to set, must not contain '='
value
the new value for the variable
overwrite
whether to change the variable if it already exists