Module sys

Mostly platform-specific functionality

Modules

• mman
  Memory management declarations.
• pthread
  Low level threading primitives
• select
  Portably monitor a group of file descriptors for readiness.
• signal
  Operating system signals.
• socket
  Socket interface functions
• stat
• statvfs
  Get filesystem statistics
• termios
  An interface for controlling asynchronous communication ports
• time
• uio
  Vectored I/O
• utsname
  Get system identification
• wait
  Wait for a process to change status