Function std::os::getenv_as_bytes
pub fn getenv_as_bytes(n: &str) -> Option<~[u8]>
Fetches the environment variable n byte vector from the current process,
returning None if the variable isn't set.
Failure
Fails if n has any interior NULs.
pub fn getenv_as_bytes(n: &str) -> Option<~[u8]>
Fetches the environment variable n byte vector from the current process,
returning None if the variable isn't set.
Fails if n has any interior NULs.
Prefix searches with a type followed by a colon (e.g.
fn:) to restrict the search to a given type.
Accepted types are: fn, mod,
struct (or str), enum,
trait, typedef (or
tdef).