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.\"  $FreeBSD: src/usr.sbin/nghook/nghook.8,v 1.3.2.4 2001/08/16 15:56:11 ru Exp $
.\"  $DragonFly: src/usr.sbin/nghook/nghook.8,v 1.4 2008/05/02 02:05:08 swildner Exp $
.\" $Whistle: nghook.8,v 1.4 1999/01/20 03:19:45 archie Exp $
.\"
.Dd January 19, 1999
.Dt NGHOOK 8
.Os
.Sh NAME
.Nm nghook
.Nd connect to a
.Xr netgraph 4
node
.Sh SYNOPSIS
.Nm
.Op Fl a
.Op Fl d
.Ar path
.Op Ar hookname
.Sh DESCRIPTION
.Nm
creates a
.Xr ng_socket 4
socket type node and connects it to hook
.Ar hookname
of the node found at
.Ar path .
If
.Ar hookname
is omitted,
.Dq debug
is assumed.
.Pp
At this point all data written to standard input is sent
to the node and all data received from the node is relayed
to standard output.
.Pp
The options are as follows:
.Bl -tag -width indent
.It Fl a
Output each read packet in
.Tn ASCII .
.It Fl d
Increase the debugging verbosity level.
.El
.Sh SEE ALSO
.Xr netgraph 3 ,
.Xr netgraph 4 ,
.Xr ngctl 8
.Sh HISTORY
The
.Em netgraph
system was designed and first implemented at Whistle Communications, Inc.\&
in a version of
.Fx 2.2
customized for the Whistle InterJet.
.Sh AUTHORS
.An Archie Cobbs Aq archie@whistle.com
.Sh BUGS
Although all input is read in unbuffered mode,
there's no way to control the packetization of the input.