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+.\"  -*- nroff -*-
+.\"
+.\" Author: Tatu Ylonen <ylo@cs.hut.fi>
+.\" Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
+.\"                    All rights reserved
+.\"
+.\" As far as I am concerned, the code I have written for this software
+.\" can be used freely for any purpose.  Any derived versions of this
+.\" software must be clearly marked as such, and if the derived work is
+.\" incompatible with the protocol description in the RFC file, it must be
+.\" called by a name other than "ssh" or "Secure Shell".
+.\"
+.\"
+.\" Copyright (c) 1999,2000 Markus Friedl. All rights reserved.
+.\" Copyright (c) 1999 Aaron Campbell. All rights reserved.
+.\" Copyright (c) 1999 Theo de Raadt. 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.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
+.\"
+.Dd September 25, 1999
+.Dt SSH-ADD 1
+.Os
+.Sh NAME
+.Nm ssh-add
+.Nd adds RSA or DSA identities for the authentication agent
+.Sh SYNOPSIS
+.Nm ssh-add
+.Op Fl lLdD
+.Op Ar
+.Sh DESCRIPTION
+.Nm
+adds RSA or DSA identities to the authentication agent,
+.Xr ssh-agent 1 .
+When run without arguments, it adds the file
+.Pa $HOME/.ssh/identity .
+Alternative file names can be given on the command line.
+If any file requires a passphrase,
+.Nm
+asks for the passphrase from the user.
+The Passphrase it is read from the user's tty.
+.Pp
+The authentication agent must be running and must be an ancestor of
+the current process for
+.Nm
+to work.
+.Pp
+The options are as follows:
+.Bl -tag -width Ds
+.It Fl l
+Lists fingerprints of all identities currently represented by the agent.
+.It Fl L
+Lists public key parameters of all identities currently represented by the agent.
+.It Fl d
+Instead of adding the identity, removes the identity from the agent.
+.It Fl D
+Deletes all identities from the agent.
+.El
+.Sh FILES
+.Bl -tag -width Ds
+.It Pa $HOME/.ssh/identity
+Contains the RSA authentication identity of the user.
+This file should not be readable by anyone but the user.
+Note that
+.Nm
+ignores this file if it is accessible by others.
+It is possible to
+specify a passphrase when generating the key; that passphrase will be
+used to encrypt the private part of this file.
+This is the default file added by
+.Nm
+when no other files have been specified.
+.It Pa $HOME/.ssh/id_dsa
+Contains the DSA authentication identity of the user.
+.El
+.Sh ENVIRONMENT
+.Bl -tag -width Ds
+.It Ev "DISPLAY" and "SSH_ASKPASS"
+If
+.Nm
+needs a passphrase, it will read the passphrase from the current
+terminal if it was run from a terminal.
+If
+.Nm
+does not have a terminal associated with it but
+.Ev DISPLAY
+and
+.Ev SSH_ASKPASS
+are set, it will execute the program specified by
+.Ev SSH_ASKPASS
+and open an X11 window to read the passphrase.
+This is particularly useful when calling
+.Nm
+from a
+.Pa .Xsession
+or related script.
+(Note that on some machines it
+may be necessary to redirect the input from
+.Pa /dev/null
+to make this work.)
+.El
+.Sh AUTHOR
+Tatu Ylonen <ylo@cs.hut.fi>
+.Pp
+OpenSSH
+is a derivative of the original (free) ssh 1.2.12 release, but with bugs
+removed and newer features re-added.
+Rapidly after the 1.2.12 release,
+newer versions bore successively more restrictive licenses.
+This version of OpenSSH
+.Bl -bullet
+.It
+has all components of a restrictive nature (i.e., patents, see
+.Xr ssl 8 )
+directly removed from the source code; any licensed or patented components
+are chosen from
+external libraries.
+.It
+has been updated to support ssh protocol 1.5.
+.It
+contains added support for
+.Xr kerberos 8
+authentication and ticket passing.
+.It
+supports one-time password authentication with
+.Xr skey 1 .
+.El
+.Sh SEE ALSO
+.Xr ssh 1 ,
+.Xr ssh-agent 1 ,
+.Xr ssh-keygen 1 ,
+.Xr sshd 8 ,
+.Xr ssl 8