pub fn getenv(variable: impl AsRef<OsStr>) -> Option<OsString>Expand description
Returns the value of an environment variable.
On UNIX, the name and value are byte strings which might or might not be in some consistent character set and encoding. On Windows, they are in UTF-8. On Windows, in case the environment variable’s value contains references to other environment variables, they are expanded.
§variable
the environment variable to get
§Returns
the value of the environment variable, or None if
the environment variable is not found. The returned string
may be overwritten by the next call to g_getenv(), g_setenv()
or g_unsetenv().