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+.\" -*- nroff -*-
+.\" ssh-add.1
+.\" Author: Tatu Ylonen <>
+.\" Copyright (c) 1995 Tatu Ylonen <>, Espoo, Finland
+.\" All rights reserved
+.\" Created: Sat Apr 22 23:55:14 1995 ylo
+.\" $Id: ssh-add.1,v 1.3 1999/10/28 23:15:49 damien Exp $
+.Dd September 25, 1999
+.Dt SSH-ADD 1
+.Nm ssh-add
+.Nd adds identities for the authentication agent
+.Nm ssh-add
+.Op Fl ldD
+.Op Ar
+adds 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,
+asks for the passphrase from the user.
+The Passphrase it is read from the user's tty.
+The authentication agent must be running and must be an ancestor of
+the current process for
+to work.
+The options are as follows:
+.Bl -tag -width Ds
+.It Fl l
+Lists 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.
+.Bl -tag -width Ds
+.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
+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
+when no other files have been specified.
+needs a passphrase, it will read the passphrase from the current
+terminal if it was run from a terminal. If
+does not have a terminal associated with it but
+is set, it
+will open an X11 window to read the passphrase. This is particularly
+useful when calling
+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.)
+Tatu Ylonen <>
+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
+has all components of a restrictive nature (ie. patents, see
+.Xr ssl 8 )
+directly removed from the source code; any licensed or patented components
+are chosen from
+external libraries.
+has been updated to support ssh protocol 1.5.
+contains added support for
+.Xr kerberos 8
+authentication and ticket passing.
+supports one-time password authentication with
+.Xr skey 1 .
+The libraries described in
+.Xr ssl 8
+are required for proper operation.
+.Xr ssh 1 ,
+.Xr ssh-agent 1 ,
+.Xr ssh-keygen 1 ,
+.Xr sshd 8 ,
+.Xr ssl 8