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232 lines
4.6 KiB
Groff
232 lines
4.6 KiB
Groff
.\" -*- 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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.\" $OpenBSD: scp.1,v 1.46 2008/07/12 05:33:41 djm Exp $
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.\"
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.Dd July 12 2008
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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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.Bk -words
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.Op Fl 1246BCpqrv
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.Op Fl c Ar cipher
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.Op Fl F Ar ssh_config
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.Op Fl i Ar identity_file
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.Op Fl l Ar limit
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.Op Fl o Ar ssh_option
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.Op Fl P Ar port
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.Op Fl S Ar program
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.Sm off
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.Oo
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.Op Ar user No @
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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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.Ar ...
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.Sm off
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.Oo
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.Op Ar user No @
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.Ar host2 No :
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.Oc Ar file2
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.Sm on
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.Ek
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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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File names may contain a user and host specification to indicate
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that the file is to be copied to/from that host.
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Local file names can be made explicit using absolute or relative pathnames
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to avoid
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.Nm
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treating file names containing
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.Sq :\&
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as host specifiers.
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Copies between two remote hosts are also 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 1
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Forces
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.Nm
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to use protocol 1.
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.It Fl 2
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Forces
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.Nm
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to use protocol 2.
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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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.It Fl B
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Selects batch mode (prevents asking for passwords or passphrases).
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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 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 F Ar ssh_config
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Specifies an alternative
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per-user configuration file for
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.Nm ssh .
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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 public key
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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 l Ar limit
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Limits the used bandwidth, specified in Kbit/s.
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.It Fl o Ar ssh_option
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Can be used to pass options to
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.Nm ssh
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in the format used in
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.Xr ssh_config 5 .
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This is useful for specifying options
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for which there is no separate
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.Nm scp
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command-line flag.
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For full details of the options listed below, and their possible values, see
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.Xr ssh_config 5 .
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.Pp
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.Bl -tag -width Ds -offset indent -compact
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.It AddressFamily
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.It BatchMode
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.It BindAddress
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.It ChallengeResponseAuthentication
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.It CheckHostIP
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.It Cipher
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.It Ciphers
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.It Compression
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.It CompressionLevel
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.It ConnectionAttempts
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.It ConnectTimeout
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.It ControlMaster
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.It ControlPath
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.It GlobalKnownHostsFile
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.It GSSAPIAuthentication
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.It GSSAPIDelegateCredentials
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.It HashKnownHosts
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.It Host
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.It HostbasedAuthentication
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.It HostKeyAlgorithms
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.It HostKeyAlias
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.It HostName
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.It IdentityFile
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.It IdentitiesOnly
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.It KbdInteractiveDevices
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.It LogLevel
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.It MACs
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.It NoHostAuthenticationForLocalhost
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.It NumberOfPasswordPrompts
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.It PasswordAuthentication
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.It Port
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.It PreferredAuthentications
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.It Protocol
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.It ProxyCommand
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.It PubkeyAuthentication
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.It RekeyLimit
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.It RhostsRSAAuthentication
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.It RSAAuthentication
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.It SendEnv
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.It ServerAliveInterval
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.It ServerAliveCountMax
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.It SmartcardDevice
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.It StrictHostKeyChecking
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.It TCPKeepAlive
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.It UsePrivilegedPort
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.It User
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.It UserKnownHostsFile
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.It VerifyHostKeyDNS
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.El
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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 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 q
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Quiet mode: disables the progress meter as well as warning and diagnostic
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messages from
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.Xr ssh 1 .
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.It Fl r
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Recursively copy entire directories.
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Note that
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.Nm
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follows symbolic links encountered in the tree traversal.
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.It Fl S Ar program
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Name of
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.Ar program
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to use for the encrypted connection.
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The program must understand
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.Xr ssh 1
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options.
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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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.El
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.Pp
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.Ex -std scp
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.Sh SEE ALSO
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.Xr rcp 1 ,
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.Xr sftp 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 ssh_config 5 ,
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.Xr sshd 8
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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 AUTHORS
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.An Timo Rinne Aq tri@iki.fi
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.An Tatu Ylonen Aq ylo@cs.hut.fi
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