determine whether socket is at out-of-band mark NAME sockatmark - determine whether socket is at out-of-band mark LIBRARY Standard C library ( libc , -lc......pause (3) sigpending (2) sigprocmask (2) sigqueue (2) sigset (3) sigsuspend (2) sleep (3) sockatmark (3) Added in POSIX.1-2001 TC2 socket (2) socketpair (2) stat (2) stpcpy (3) …..., getsockopt (2), read (2), recvmmsg (2), select (2), shutdown (2), socket (2), cmsg (3), sockatmark (3), ip (7), ipv6 (7), socket (7), tcp (7), udp (7), unix (7)..., getsockopt (2), read (2), recvmmsg (2), select (2), shutdown (2), socket (2), cmsg (3), sockatmark (3), ip (7), ipv6 (7), socket (7), tcp (7), udp (7), unix (7)..., getsockopt (2), read (2), recvmmsg (2), select (2), shutdown (2), socket (2), cmsg (3), sockatmark (3), ip (7), ipv6 (7), socket (7), tcp (7), udp (7), unix (7)