The timerfd facility is a set of Linux-standard system calls that operate on interval timers.
These timers are analogous to per-process timers but are represented by a file descriptor, rather than a process.
-These file descriptors may be passed to other processes, are preserved across fork(2), and may be monitored via kevent(2), poll(2), or select(2).
+These file descriptors may be passed to other processes, are preserved across man:fork[2], and may be monitored via man:kevent[2], man:poll[2], or man:select[2].
-A timerfd implementation in FreeBSD already exists for Linux compatibility, but