freebsd-skq/usr.sbin/ngctl/ngctl.8

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.\" Copyright (c) 1996-1999 Whistle Communications, Inc.
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.\" $FreeBSD$
.\" $Whistle: ngctl.8,v 1.6 1999/01/20 03:19:44 archie Exp $
.\"
.Dd January 19, 1999
.Dt NGCTL 8
.Os FreeBSD 3
.Sh NAME
.Nm ngctl
.Nd netgraph control utility
.Sh SYNOPSIS
.Nm ngctl
.Op Fl d
.Op Fl f Ar filename
.Op Fl n Ar nodename
.Op Ar command ...
.Sh DESCRIPTION
The
.Nm
utility creates a new netgraph node of type
.Em socket
which can be used to issue netgraph commands.
If no
.Fl f
flag is given, no
command is supplied on the command line, and standard input is a tty,
.Nm ngctl
will enter interactive mode. Otherwise
.Nm ngctl
will execute the supplied command(s) and exit immediately.
.Pp
If the
.Dv ng_socket.ko
module is not installed in the kernel,
.Nm ngctl
will attempt to install it.
.Pp
The options are as follows:
.Bl -tag -width indent
.It Fl f Ar nodeinfo
Read commands from the named file.
A single dash represents the standard input.
Blank lines and lines starting with a ``#'' are ignored.
.It Fl n Ar nodename
Assign
.Em nodename
to the newly created netgraph node. The default name is
.Em ngctlXXX
where XXX is the process ID number.
.It Fl d
Increase the debugging verbosity level.
.El
.Sh COMMANDS
The currently supported commands in
.Nm ngctl
are:
.Pp
.Bd -literal -offset indent -compact
connect Connects two nodes
debug Get/set debugging verbosity level
help Show command summary or get help on a command
list Show information about all nodes
mkpeer Create and connect a new node to an existing node
name Assign a name to a node
read Read and execute commands from a file
rmhook Disconnect a node's hook
show Show information about a node
shutdown Shutdown a node
status Get human readable status from a node
types Show all installed node types
quit Exit program
.Ed
.Pp
The ``help'' command displays the available
commands, their usage, and a brief description.
.Sh EXIT VALUE
The
.Nm
utility exits 0 on success, and >0 if an error occurs.
.Sh SEE ALSO
.Xr netgraph 3 ,
.Xr netgraph 4 .
.Xr nghook 8 .
.Sh AUTHOR
Archie Cobbs <archie@whistle.com>
.Sh HISTORY
The
.Em netgraph
system was designed and first implemented at Whistle Communications, Inc.
in a version FreeBSD 2.2 customized for the Whistle InterJet.