Module std::os::unix::prelude

This is supported on Unix only.

prelude，用于方便地编写平台特定的代码。

包括所有扩展名 traits 和一些重要的类型定义。

Re-exports

pub use super::ffi::OsStrExt;
pub use super::ffi::OsStringExt;
pub use super::fs::DirEntryExt;
pub use super::fs::FileExt;
pub use super::fs::FileTypeExt;
pub use super::fs::MetadataExt;
pub use super::fs::OpenOptionsExt;
pub use super::fs::PermissionsExt;
pub use super::io::AsRawFd;
pub use super::io::FromRawFd;
pub use super::io::IntoRawFd;
pub use super::io::RawFd;
pub use super::process::CommandExt;
pub use super::process::ExitStatusExt;
pub use super::thread::JoinHandleExt;