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Annotation of src/usr.bin/ssh/scp.1, Revision 1.98

1.1       deraadt     1: .\"
                      2: .\" scp.1
                      3: .\"
                      4: .\" Author: Tatu Ylonen <ylo@cs.hut.fi>
                      5: .\"
                      6: .\" Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
                      7: .\"                    All rights reserved
                      8: .\"
                      9: .\" Created: Sun May  7 00:14:37 1995 ylo
                     10: .\"
1.98    ! djm        11: .\" $OpenBSD: scp.1,v 1.97 2021/08/02 23:38:27 djm Exp $
1.1       deraadt    12: .\"
1.98    ! djm        13: .Dd $Mdocdate: August 2 2021 $
1.3       aaron      14: .Dt SCP 1
                     15: .Os
                     16: .Sh NAME
                     17: .Nm scp
1.87      jmc        18: .Nd OpenSSH secure file copy
1.3       aaron      19: .Sh SYNOPSIS
                     20: .Nm scp
1.98    ! djm        21: .Op Fl 346ABCpqRrTv
1.29      jmc        22: .Op Fl c Ar cipher
1.97      djm        23: .Op Fl D Ar sftp_server_path
1.19      stevesk    24: .Op Fl F Ar ssh_config
1.84      jmc        25: .Op Fl i Ar identity_file
1.83      tb         26: .Op Fl J Ar destination
1.25      markus     27: .Op Fl l Ar limit
1.97      djm        28: .Op Fl M Ar scp | sftp
1.17      stevesk    29: .Op Fl o Ar ssh_option
1.29      jmc        30: .Op Fl P Ar port
                     31: .Op Fl S Ar program
1.76      jmc        32: .Ar source ... target
1.7       aaron      33: .Sh DESCRIPTION
1.3       aaron      34: .Nm
1.6       aaron      35: copies files between hosts on a network.
1.91      deraadt    36: .Pp
1.6       aaron      37: It uses
1.3       aaron      38: .Xr ssh 1
1.1       deraadt    39: for data transfer, and uses the same authentication and provides the
1.91      deraadt    40: same security as a login session.
                     41: The scp protocol requires execution of the remote user's shell to perform
                     42: .Xr glob 3
                     43: pattern matching.
                     44: .Pp
1.3       aaron      45: .Nm
1.1       deraadt    46: will ask for passwords or passphrases if they are needed for
                     47: authentication.
1.3       aaron      48: .Pp
1.75      millert    49: The
1.76      jmc        50: .Ar source
                     51: and
1.75      millert    52: .Ar target
                     53: may be specified as a local pathname, a remote host with optional path
                     54: in the form
1.76      jmc        55: .Sm off
                     56: .Oo user @ Oc host : Op path ,
                     57: .Sm on
                     58: or a URI in the form
                     59: .Sm off
                     60: .No scp:// Oo user @ Oc host Oo : port Oc Op / path .
                     61: .Sm on
1.44      jmc        62: Local file names can be made explicit using absolute or relative pathnames
                     63: to avoid
                     64: .Nm
                     65: treating file names containing
                     66: .Sq :\&
                     67: as host specifiers.
1.75      millert    68: .Pp
                     69: When copying between two remote hosts, if the URI format is used, a
                     70: .Ar port
                     71: may only be specified on the
                     72: .Ar target
                     73: if the
                     74: .Fl 3
                     75: option is used.
1.3       aaron      76: .Pp
                     77: The options are as follows:
                     78: .Bl -tag -width Ds
1.55      markus     79: .It Fl 3
                     80: Copies between two remote hosts are transferred through the local host.
                     81: Without this option the data is copied directly between the two remote
                     82: hosts.
1.98    ! djm        83: Note that, when using the legacy SCP protocol (the default), this option
        !            84: selects batch mode for the second host as
1.89      jmc        85: .Nm
                     86: cannot ask for passwords or passphrases for both hosts.
1.98    ! djm        87: This mode is the default.
1.29      jmc        88: .It Fl 4
                     89: Forces
                     90: .Nm
                     91: to use IPv4 addresses only.
                     92: .It Fl 6
                     93: Forces
1.3       aaron      94: .Nm
1.29      jmc        95: to use IPv6 addresses only.
1.90      djm        96: .It Fl A
                     97: Allows forwarding of
                     98: .Xr ssh-agent 1
                     99: to the remote system.
                    100: The default is not to forward an authentication agent.
1.3       aaron     101: .It Fl B
1.1       deraadt   102: Selects batch mode (prevents asking for passwords or passphrases).
1.3       aaron     103: .It Fl C
1.6       aaron     104: Compression enable.
                    105: Passes the
1.3       aaron     106: .Fl C
                    107: flag to
                    108: .Xr ssh 1
1.1       deraadt   109: to enable compression.
1.29      jmc       110: .It Fl c Ar cipher
                    111: Selects the cipher to use for encrypting the data transfer.
                    112: This option is directly passed to
                    113: .Xr ssh 1 .
1.97      djm       114: .It Fl D Ar sftp_server_path
                    115: When using the experimental SFTP protocol support via
                    116: .Fl M ,
                    117: connect directly to a local SFTP server program rather than a
                    118: remote one via
                    119: .Xr ssh 1 .
                    120: This option may be useful in debugging the client and server.
1.19      stevesk   121: .It Fl F Ar ssh_config
                    122: Specifies an alternative
                    123: per-user configuration file for
                    124: .Nm ssh .
                    125: This option is directly passed to
                    126: .Xr ssh 1 .
1.29      jmc       127: .It Fl i Ar identity_file
1.46      djm       128: Selects the file from which the identity (private key) for public key
1.29      jmc       129: authentication is read.
1.82      tb        130: This option is directly passed to
                    131: .Xr ssh 1 .
                    132: .It Fl J Ar destination
1.84      jmc       133: Connect to the target host by first making an
1.82      tb        134: .Nm
                    135: connection to the jump host described by
                    136: .Ar destination
                    137: and then establishing a TCP forwarding to the ultimate destination from
                    138: there.
                    139: Multiple jump hops may be specified separated by comma characters.
                    140: This is a shortcut to specify a
                    141: .Cm ProxyJump
                    142: configuration directive.
1.29      jmc       143: This option is directly passed to
                    144: .Xr ssh 1 .
                    145: .It Fl l Ar limit
                    146: Limits the used bandwidth, specified in Kbit/s.
1.97      djm       147: .It Fl M Ar scp | sftp
                    148: Specifies a mode which will be used to transfer files.
                    149: The default is to use the original
                    150: .Cm scp
                    151: protocol.
                    152: Alternately, experimental support for using the
                    153: .Cm sftp
                    154: protocol is available.
1.29      jmc       155: .It Fl o Ar ssh_option
                    156: Can be used to pass options to
                    157: .Nm ssh
                    158: in the format used in
                    159: .Xr ssh_config 5 .
                    160: This is useful for specifying options
                    161: for which there is no separate
                    162: .Nm scp
                    163: command-line flag.
                    164: For full details of the options listed below, and their possible values, see
                    165: .Xr ssh_config 5 .
                    166: .Pp
                    167: .Bl -tag -width Ds -offset indent -compact
                    168: .It AddressFamily
                    169: .It BatchMode
                    170: .It BindAddress
1.77      jmc       171: .It BindInterface
1.61      djm       172: .It CanonicalDomains
                    173: .It CanonicalizeFallbackLocal
                    174: .It CanonicalizeHostname
                    175: .It CanonicalizeMaxDots
                    176: .It CanonicalizePermittedCNAMEs
1.81      jmc       177: .It CASignatureAlgorithms
1.68      jmc       178: .It CertificateFile
1.29      jmc       179: .It CheckHostIP
                    180: .It Ciphers
                    181: .It Compression
1.74      naddy     182: .It ConnectionAttempts
1.34      dtucker   183: .It ConnectTimeout
1.36      djm       184: .It ControlMaster
                    185: .It ControlPath
1.57      djm       186: .It ControlPersist
1.29      jmc       187: .It GlobalKnownHostsFile
                    188: .It GSSAPIAuthentication
                    189: .It GSSAPIDelegateCredentials
1.38      jmc       190: .It HashKnownHosts
1.29      jmc       191: .It Host
1.95      naddy     192: .It HostbasedAcceptedAlgorithms
1.29      jmc       193: .It HostbasedAuthentication
                    194: .It HostKeyAlgorithms
                    195: .It HostKeyAlias
1.86      jmc       196: .It Hostname
1.70      jmc       197: .It IdentitiesOnly
1.69      markus    198: .It IdentityAgent
1.29      jmc       199: .It IdentityFile
1.54      jmc       200: .It IPQoS
1.57      djm       201: .It KbdInteractiveAuthentication
1.37      djm       202: .It KbdInteractiveDevices
1.52      jmc       203: .It KexAlgorithms
1.92      jmc       204: .It KnownHostsCommand
1.29      jmc       205: .It LogLevel
                    206: .It MACs
                    207: .It NoHostAuthenticationForLocalhost
                    208: .It NumberOfPasswordPrompts
                    209: .It PasswordAuthentication
1.50      markus    210: .It PKCS11Provider
1.29      jmc       211: .It Port
                    212: .It PreferredAuthentications
                    213: .It ProxyCommand
1.71      jmc       214: .It ProxyJump
1.93      dtucker   215: .It PubkeyAcceptedAlgorithms
1.29      jmc       216: .It PubkeyAuthentication
1.39      dtucker   217: .It RekeyLimit
1.35      jmc       218: .It SendEnv
1.32      markus    219: .It ServerAliveInterval
                    220: .It ServerAliveCountMax
1.79      jmc       221: .It SetEnv
1.29      jmc       222: .It StrictHostKeyChecking
1.31      markus    223: .It TCPKeepAlive
1.65      jmc       224: .It UpdateHostKeys
1.29      jmc       225: .It User
                    226: .It UserKnownHostsFile
                    227: .It VerifyHostKeyDNS
                    228: .El
1.4       markus    229: .It Fl P Ar port
1.6       aaron     230: Specifies the port to connect to on the remote host.
                    231: Note that this option is written with a capital
1.3       aaron     232: .Sq P ,
                    233: because
                    234: .Fl p
1.62      tedu      235: is already reserved for preserving the times and modes of the file.
1.29      jmc       236: .It Fl p
                    237: Preserves modification times, access times, and modes from the
                    238: original file.
                    239: .It Fl q
1.43      djm       240: Quiet mode: disables the progress meter as well as warning and diagnostic
                    241: messages from
                    242: .Xr ssh 1 .
1.98    ! djm       243: .It Fl R
        !           244: Copies between two remote hosts are performed by connecting to the origin
        !           245: host and executing
        !           246: .Nm
        !           247: there.
        !           248: This requires that
        !           249: .Nm
        !           250: running on the origin host can authenticate to the destination host without
        !           251: requiring a password.
1.29      jmc       252: .It Fl r
                    253: Recursively copy entire directories.
1.45      dtucker   254: Note that
                    255: .Nm
                    256: follows symbolic links encountered in the tree traversal.
1.10      deraadt   257: .It Fl S Ar program
                    258: Name of
                    259: .Ar program
1.12      aaron     260: to use for the encrypted connection.
                    261: The program must understand
1.9       deraadt   262: .Xr ssh 1
                    263: options.
1.85      djm       264: .It Fl T
                    265: Disable strict filename checking.
                    266: By default when copying files from a remote host to a local directory
                    267: .Nm
                    268: checks that the received filenames match those requested on the command-line
                    269: to prevent the remote end from sending unexpected or unwanted files.
                    270: Because of differences in how various operating systems and shells interpret
                    271: filename wildcards, these checks may cause wanted files to be rejected.
                    272: This option disables these checks at the expense of fully trusting that
                    273: the server will not send unexpected filenames.
1.29      jmc       274: .It Fl v
                    275: Verbose mode.
                    276: Causes
1.24      markus    277: .Nm
1.29      jmc       278: and
                    279: .Xr ssh 1
                    280: to print debugging messages about their progress.
                    281: This is helpful in
                    282: debugging connection, authentication, and configuration problems.
1.8       aaron     283: .El
1.51      jmc       284: .Sh EXIT STATUS
1.40      jmc       285: .Ex -std scp
1.3       aaron     286: .Sh SEE ALSO
1.14      djm       287: .Xr sftp 1 ,
1.3       aaron     288: .Xr ssh 1 ,
                    289: .Xr ssh-add 1 ,
                    290: .Xr ssh-agent 1 ,
                    291: .Xr ssh-keygen 1 ,
1.23      stevesk   292: .Xr ssh_config 5 ,
1.3       aaron     293: .Xr sshd 8
1.28      jmc       294: .Sh HISTORY
                    295: .Nm
1.62      tedu      296: is based on the rcp program in
1.60      jmc       297: .Bx
                    298: source code from the Regents of the University of California.
1.28      jmc       299: .Sh AUTHORS
1.59      schwarze  300: .An Timo Rinne Aq Mt tri@iki.fi
                    301: .An Tatu Ylonen Aq Mt ylo@cs.hut.fi