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.\" -*- nroff -*-
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.\"
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.\" scp.1
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.\"
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.\" Author: Tatu Ylonen <ylo@cs.hut.fi>
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.\"
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.\" Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
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.\" All rights reserved
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.\"
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.\" Created: Sun May 7 00:14:37 1995 ylo
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.\"
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.\" $Id: scp.1,v 1.7 2000/04/12 21:47:50 aaron Exp $
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.\"
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.Dd September 25, 1999
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.Dt SCP 1
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.Os
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.Sh NAME
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.Nm scp
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.Nd secure copy (remote file copy program)
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.Sh SYNOPSIS
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.Nm scp
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.Op Fl pqrvC46
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.Op Fl P Ar port
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.Op Fl c Ar cipher
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.Op Fl i Ar identity_file
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.Sm off
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.Oo
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.Op Ar user@
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.Ar host1 No :
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.Oc Ns Ar file1
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.Sm on
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.Op Ar ...
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.Sm off
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.Oo
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.Op Ar user@
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.Ar host2 No :
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.Oc Ar file2
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.Sm on
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.Sh DESCRIPTION
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.Nm
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copies files between hosts on a network.
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It uses
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.Xr ssh 1
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for data transfer, and uses the same authentication and provides the
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same security as
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.Xr ssh 1 .
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Unlike
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.Xr rcp 1 ,
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.Nm
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will ask for passwords or passphrases if they are needed for
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authentication.
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.Pp
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Any file name may contain a host and user specification to indicate
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that the file is to be copied to/from that host.
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Copies between two remote hosts are permitted.
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.Pp
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The options are as follows:
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.Bl -tag -width Ds
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.It Fl c Ar cipher
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Selects the cipher to use for encrypting the data transfer.
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This option is directly passed to
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.Xr ssh 1 .
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.It Fl i Ar identity_file
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Selects the file from which the identity (private key) for RSA
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authentication is read.
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This option is directly passed to
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.Xr ssh 1 .
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.It Fl p
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Preserves modification times, access times, and modes from the
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original file.
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.It Fl r
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Recursively copy entire directories.
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.It Fl v
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Verbose mode.
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Causes
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.Nm
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and
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.Xr ssh 1
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to print debugging messages about their progress.
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This is helpful in
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debugging connection, authentication, and configuration problems.
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.It Fl B
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Selects batch mode (prevents asking for passwords or passphrases).
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.It Fl q
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Disables the progress meter.
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.It Fl C
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Compression enable.
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Passes the
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.Fl C
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flag to
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.Xr ssh 1
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to enable compression.
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.It Fl P Ar port
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Specifies the port to connect to on the remote host.
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Note that this option is written with a capital
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.Sq P ,
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because
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.Fl p
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is already reserved for preserving the times and modes of the file in
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.Xr rcp 1 .
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.It Fl 4
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Forces
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.Nm
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to use IPv4 addresses only.
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.It Fl 6
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Forces
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.Nm
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to use IPv6 addresses only.
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.Sh AUTHORS
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Timo Rinne <tri@iki.fi> and Tatu Ylonen <ylo@cs.hut.fi>
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.Sh HISTORY
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.Nm
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is based on the
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.Xr rcp 1
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program in BSD source code from the Regents of the University of
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California.
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.Sh SEE ALSO
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.Xr rcp 1 ,
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.Xr ssh 1 ,
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.Xr ssh-add 1 ,
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.Xr ssh-agent 1 ,
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.Xr ssh-keygen 1 ,
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.Xr sshd 8
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