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+.\" Copyright (c) 2001,2003 Networks Associates Technology, Inc.
+.\" All rights reserved.
+.\"
+.\" Portions of this software were developed for the FreeBSD Project by
+.\" ThinkSec AS and NAI Labs, the Security Research Division of Network
+.\" Associates, Inc.  under DARPA/SPAWAR contract N66001-01-C-8035
+.\" ("CBOSS"), as part of the DARPA CHATS research program.
+.\"
+.\" 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. The name of the author may not be used to endorse or promote
+.\"    products derived from this software without specific prior written
+.\"    permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
+.\"
+.\" $FreeBSD$
+.\"
+.Dd February 6, 2003
+.Dt PAM_ECHO 8
+.Os
+.Sh NAME
+.Nm pam_echo
+.Nd Echo PAM module
+.Sh SYNOPSIS
+.Op Ar service-name
+.Ar module-type
+.Ar control-flag
+.Pa pam_echo
+.Op Ar arguments
+.Sh DESCRIPTION
+The echo service module for PAM displays its arguments to the user,
+separated by spaces, using the current conversation function.
+.Pp
+If the
+.Cm %
+character occurs anywhere in the arguments to
+.Nm ,
+it is assumed to introduce one of the following escape sequences:
+.Bl -tag -width 4n
+.It Cm %H
+The name of the host on which the client runs
+.Pq Dv PAM_RHOST .
+.\".It Cm %h
+.\"The name of the host on which the server runs.
+.It Cm %s
+The current service name
+.Pq Dv PAM_SERVICE .
+.It Cm %t
+The name of the controlling tty
+.Pq Dv PAM_TTY .
+.It Cm \&%U
+The applicant's user name
+.Pq Dv PAM_RUSER .
+.It Cm %u
+The target account's user name
+.Pq Dv PAM_USER .
+.El
+.Pp
+Any other two-character sequence beginning with
+.Cm %
+expands to the character following the
+.Cm %
+character.
+.Sh SEE ALSO
+.Xr pam.conf 5 ,
+.Xr pam 8
+.Sh AUTHORS
+The
+.Nm
+module and this manual page were developed for the
+.Fx
+Project by
+ThinkSec AS and NAI Labs, the Security Research Division of Network
+Associates, Inc.\& under DARPA/SPAWAR contract N66001-01-C-8035
+.Pq Dq CBOSS ,
+as part of the DARPA CHATS research program.