get the file modification times for a configuration file.

HostNameToShort takes a hostname which may be a Fully Qualified Domain Name or a short hostname, and returns the short hostname.

NewAtomicPtr creates a new AtomicPtr[T] initialized with ptr.

AtomicPtr provides atomic getting and setting of a pointer.

WriteNoCloser wraps an io.Writer and returns an io.WriteCloser for which Close will be a no-op.

NopWriter is a no-op io.WriteCloser.

SyncMap is a strongly-typed sync.Map.