# Operating System Interfaces

The following library modules provide interfaces to the Operating System, through system calls.

POSIX:

• :std/os/error
• :std/os/socket
• :std/os/fd
• :std/os/fdio
• :std/os/fcntl
• :std/os/flock
• :std/os/socket
• :std/os/pipe
• :std/os/signal
• :std/os/signal-handler
• :std/os/hostname
• :std/os/temporaries

OS-specific:

• :std/os/signalfd (Linux)
• :std/os/inotfy (Linux)
• :std/os/epoll (Linux)
• :std/os/kqueue (BSD, Darwin)