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+.\" Copyright (c) 1983, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)shutdown.2	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt SHUTDOWN 2
+.Os BSD 4.2
+.Sh NAME
+.Nm shutdown
+.Nd shut down part of a full-duplex connection
+.Sh SYNOPSIS
+.Fd #include <sys/socket.h>
+.Ft int
+.Fn shutdown "int s" "int how"
+.Sh DESCRIPTION
+The
+.Fn shutdown
+call causes all or part of a full-duplex connection on
+the socket associated with
+.Fa s
+to be shut down.
+If
+.Fa how
+is 0, further receives will be disallowed.
+If
+.Fa how
+is 1, further sends will be disallowed.
+If
+.Fa how
+is 2, further sends and receives will be disallowed.
+.Sh DIAGNOSTICS
+A 0 is returned if the call succeeds, -1 if it fails.
+.Sh ERRORS
+The call succeeds unless:
+.Bl -tag -width ENOTCONNAA
+.It Bq Er EBADF
+.Fa S
+is not a valid descriptor.
+.It Bq Er ENOTSOCK
+.Fa S
+is a file, not a socket.
+.It Bq Er ENOTCONN
+The specified socket is not connected.
+.El
+.Sh SEE ALSO
+.Xr connect 2 ,
+.Xr socket 2
+.Sh HISTORY
+The
+.Nm
+function call appeared in
+.Bx 4.2 .