Annotation of src/usr.bin/ssh/scp.1, Revision 1.106
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: .\"
1.106 ! deraadt 11: .\" $OpenBSD: scp.1,v 1.105 2021/09/20 06:53:56 djm Exp $
1.1 deraadt 12: .\"
1.105 djm 13: .Dd $Mdocdate: September 20 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
1.105 djm 21: .Op Fl 346ABCOpqRrsTv
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
1.17 stevesk 28: .Op Fl o Ar ssh_option
1.29 jmc 29: .Op Fl P Ar port
30: .Op Fl S Ar program
1.76 jmc 31: .Ar source ... target
1.7 aaron 32: .Sh DESCRIPTION
1.3 aaron 33: .Nm
1.6 aaron 34: copies files between hosts on a network.
1.91 deraadt 35: .Pp
1.6 aaron 36: It uses
1.3 aaron 37: .Xr ssh 1
1.1 deraadt 38: for data transfer, and uses the same authentication and provides the
1.91 deraadt 39: same security as a login session.
40: .Pp
1.3 aaron 41: .Nm
1.1 deraadt 42: will ask for passwords or passphrases if they are needed for
43: authentication.
1.3 aaron 44: .Pp
1.75 millert 45: The
1.76 jmc 46: .Ar source
47: and
1.75 millert 48: .Ar target
49: may be specified as a local pathname, a remote host with optional path
50: in the form
1.76 jmc 51: .Sm off
52: .Oo user @ Oc host : Op path ,
53: .Sm on
54: or a URI in the form
55: .Sm off
56: .No scp:// Oo user @ Oc host Oo : port Oc Op / path .
57: .Sm on
1.44 jmc 58: Local file names can be made explicit using absolute or relative pathnames
59: to avoid
60: .Nm
61: treating file names containing
62: .Sq :\&
63: as host specifiers.
1.75 millert 64: .Pp
65: When copying between two remote hosts, if the URI format is used, a
66: .Ar port
1.100 naddy 67: cannot be specified on the
1.75 millert 68: .Ar target
69: if the
1.100 naddy 70: .Fl R
1.75 millert 71: option is used.
1.3 aaron 72: .Pp
73: The options are as follows:
74: .Bl -tag -width Ds
1.55 markus 75: .It Fl 3
76: Copies between two remote hosts are transferred through the local host.
77: Without this option the data is copied directly between the two remote
78: hosts.
1.106 ! deraadt 79: Note that, when using the legacy SCP protocol (via the
! 80: .Fl O
! 81: flag), this option
1.98 djm 82: selects batch mode for the second host as
1.89 jmc 83: .Nm
84: cannot ask for passwords or passphrases for both hosts.
1.98 djm 85: This mode is the default.
1.29 jmc 86: .It Fl 4
87: Forces
88: .Nm
89: to use IPv4 addresses only.
90: .It Fl 6
91: Forces
1.3 aaron 92: .Nm
1.29 jmc 93: to use IPv6 addresses only.
1.90 djm 94: .It Fl A
95: Allows forwarding of
96: .Xr ssh-agent 1
97: to the remote system.
98: The default is not to forward an authentication agent.
1.3 aaron 99: .It Fl B
1.1 deraadt 100: Selects batch mode (prevents asking for passwords or passphrases).
1.3 aaron 101: .It Fl C
1.6 aaron 102: Compression enable.
103: Passes the
1.3 aaron 104: .Fl C
105: flag to
106: .Xr ssh 1
1.1 deraadt 107: to enable compression.
1.29 jmc 108: .It Fl c Ar cipher
109: Selects the cipher to use for encrypting the data transfer.
110: This option is directly passed to
111: .Xr ssh 1 .
1.97 djm 112: .It Fl D Ar sftp_server_path
1.99 djm 113: When using the SFTP protocol support via
1.106 ! deraadt 114: .Fl M ,
1.97 djm 115: connect directly to a local SFTP server program rather than a
116: remote one via
117: .Xr ssh 1 .
118: This option may be useful in debugging the client and server.
1.19 stevesk 119: .It Fl F Ar ssh_config
120: Specifies an alternative
121: per-user configuration file for
122: .Nm ssh .
123: This option is directly passed to
124: .Xr ssh 1 .
1.29 jmc 125: .It Fl i Ar identity_file
1.46 djm 126: Selects the file from which the identity (private key) for public key
1.29 jmc 127: authentication is read.
1.82 tb 128: This option is directly passed to
129: .Xr ssh 1 .
130: .It Fl J Ar destination
1.84 jmc 131: Connect to the target host by first making an
1.82 tb 132: .Nm
133: connection to the jump host described by
134: .Ar destination
135: and then establishing a TCP forwarding to the ultimate destination from
136: there.
137: Multiple jump hops may be specified separated by comma characters.
138: This is a shortcut to specify a
139: .Cm ProxyJump
140: configuration directive.
1.29 jmc 141: This option is directly passed to
142: .Xr ssh 1 .
143: .It Fl l Ar limit
144: Limits the used bandwidth, specified in Kbit/s.
1.99 djm 145: .It Fl O
1.106 ! deraadt 146: Use the legacy SCP protocol for file transfers instead of the SFTP protocol.
1.99 djm 147: Forcing the use of the SCP protocol may be necessary for servers that do
1.101 djm 148: not implement SFTP, for backwards-compatibility for particular filename
149: wildcard patterns and for expanding paths with a
150: .Sq ~
151: prefix for older SFTP servers.
1.29 jmc 152: .It Fl o Ar ssh_option
153: Can be used to pass options to
154: .Nm ssh
155: in the format used in
156: .Xr ssh_config 5 .
157: This is useful for specifying options
158: for which there is no separate
159: .Nm scp
160: command-line flag.
161: For full details of the options listed below, and their possible values, see
162: .Xr ssh_config 5 .
163: .Pp
164: .Bl -tag -width Ds -offset indent -compact
165: .It AddressFamily
166: .It BatchMode
167: .It BindAddress
1.77 jmc 168: .It BindInterface
1.61 djm 169: .It CanonicalDomains
170: .It CanonicalizeFallbackLocal
171: .It CanonicalizeHostname
172: .It CanonicalizeMaxDots
173: .It CanonicalizePermittedCNAMEs
1.81 jmc 174: .It CASignatureAlgorithms
1.68 jmc 175: .It CertificateFile
1.29 jmc 176: .It CheckHostIP
177: .It Ciphers
178: .It Compression
1.74 naddy 179: .It ConnectionAttempts
1.34 dtucker 180: .It ConnectTimeout
1.36 djm 181: .It ControlMaster
182: .It ControlPath
1.57 djm 183: .It ControlPersist
1.29 jmc 184: .It GlobalKnownHostsFile
185: .It GSSAPIAuthentication
186: .It GSSAPIDelegateCredentials
1.38 jmc 187: .It HashKnownHosts
1.29 jmc 188: .It Host
1.95 naddy 189: .It HostbasedAcceptedAlgorithms
1.29 jmc 190: .It HostbasedAuthentication
191: .It HostKeyAlgorithms
192: .It HostKeyAlias
1.86 jmc 193: .It Hostname
1.70 jmc 194: .It IdentitiesOnly
1.69 markus 195: .It IdentityAgent
1.29 jmc 196: .It IdentityFile
1.54 jmc 197: .It IPQoS
1.57 djm 198: .It KbdInteractiveAuthentication
1.37 djm 199: .It KbdInteractiveDevices
1.52 jmc 200: .It KexAlgorithms
1.92 jmc 201: .It KnownHostsCommand
1.29 jmc 202: .It LogLevel
203: .It MACs
204: .It NoHostAuthenticationForLocalhost
205: .It NumberOfPasswordPrompts
206: .It PasswordAuthentication
1.50 markus 207: .It PKCS11Provider
1.29 jmc 208: .It Port
209: .It PreferredAuthentications
210: .It ProxyCommand
1.71 jmc 211: .It ProxyJump
1.93 dtucker 212: .It PubkeyAcceptedAlgorithms
1.29 jmc 213: .It PubkeyAuthentication
1.39 dtucker 214: .It RekeyLimit
1.35 jmc 215: .It SendEnv
1.32 markus 216: .It ServerAliveInterval
217: .It ServerAliveCountMax
1.79 jmc 218: .It SetEnv
1.29 jmc 219: .It StrictHostKeyChecking
1.31 markus 220: .It TCPKeepAlive
1.65 jmc 221: .It UpdateHostKeys
1.29 jmc 222: .It User
223: .It UserKnownHostsFile
224: .It VerifyHostKeyDNS
225: .El
1.4 markus 226: .It Fl P Ar port
1.6 aaron 227: Specifies the port to connect to on the remote host.
228: Note that this option is written with a capital
1.3 aaron 229: .Sq P ,
230: because
231: .Fl p
1.103 dtucker 232: is already reserved for preserving the times and mode bits of the file.
1.29 jmc 233: .It Fl p
1.103 dtucker 234: Preserves modification times, access times, and file mode bits from the
235: source file.
1.29 jmc 236: .It Fl q
1.43 djm 237: Quiet mode: disables the progress meter as well as warning and diagnostic
238: messages from
239: .Xr ssh 1 .
1.98 djm 240: .It Fl R
241: Copies between two remote hosts are performed by connecting to the origin
242: host and executing
243: .Nm
244: there.
245: This requires that
246: .Nm
247: running on the origin host can authenticate to the destination host without
248: requiring a password.
1.29 jmc 249: .It Fl r
250: Recursively copy entire directories.
1.45 dtucker 251: Note that
252: .Nm
253: follows symbolic links encountered in the tree traversal.
1.10 deraadt 254: .It Fl S Ar program
255: Name of
256: .Ar program
1.12 aaron 257: to use for the encrypted connection.
258: The program must understand
1.9 deraadt 259: .Xr ssh 1
260: options.
1.85 djm 261: .It Fl T
262: Disable strict filename checking.
263: By default when copying files from a remote host to a local directory
264: .Nm
265: checks that the received filenames match those requested on the command-line
266: to prevent the remote end from sending unexpected or unwanted files.
267: Because of differences in how various operating systems and shells interpret
268: filename wildcards, these checks may cause wanted files to be rejected.
269: This option disables these checks at the expense of fully trusting that
270: the server will not send unexpected filenames.
1.29 jmc 271: .It Fl v
272: Verbose mode.
273: Causes
1.24 markus 274: .Nm
1.29 jmc 275: and
276: .Xr ssh 1
277: to print debugging messages about their progress.
278: This is helpful in
279: debugging connection, authentication, and configuration problems.
1.8 aaron 280: .El
1.51 jmc 281: .Sh EXIT STATUS
1.40 jmc 282: .Ex -std scp
1.3 aaron 283: .Sh SEE ALSO
1.14 djm 284: .Xr sftp 1 ,
1.3 aaron 285: .Xr ssh 1 ,
286: .Xr ssh-add 1 ,
287: .Xr ssh-agent 1 ,
288: .Xr ssh-keygen 1 ,
1.23 stevesk 289: .Xr ssh_config 5 ,
1.99 djm 290: .Xr sftp-server 8 ,
1.3 aaron 291: .Xr sshd 8
1.28 jmc 292: .Sh HISTORY
293: .Nm
1.62 tedu 294: is based on the rcp program in
1.60 jmc 295: .Bx
296: source code from the Regents of the University of California.
1.106 ! deraadt 297: .Pp
! 298: Since OpenSSH 8.8,
! 299: .Nm
! 300: has use the SFTP protocol for transfers by default.
1.28 jmc 301: .Sh AUTHORS
1.59 schwarze 302: .An Timo Rinne Aq Mt tri@iki.fi
303: .An Tatu Ylonen Aq Mt ylo@cs.hut.fi
1.102 jmc 304: .Sh CAVEATS
1.106 ! deraadt 305: The legacy SCP protocol (selected by the
! 306: .Fl O
! 307: flag) requires execution of the remote user's shell to perform
1.102 jmc 308: .Xr glob 3
309: pattern matching.
310: This requires careful quoting of any characters that have special meaning to
311: the remote shell, such as quote characters.
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