1 .\" $OpenBSD: sftp.1,v 1.101 2015/01/30 11:43:14 djm Exp $
3 .\" Copyright (c) 2001 Damien Miller. All rights reserved.
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25 .Dd $Mdocdate: January 30 2015 $
30 .Nd secure file transfer program
35 .Op Fl B Ar buffer_size
38 .Op Fl D Ar sftp_server_path
39 .Op Fl F Ar ssh_config
40 .Op Fl i Ar identity_file
42 .Op Fl o Ar ssh_option
44 .Op Fl R Ar num_requests
46 .Op Fl s Ar subsystem | sftp_server
50 .Oo Ar user Ns @ Oc Ns
51 .Ar host Ns Op : Ns Ar
55 .Ar host Ns Oo : Ns Ar dir Ns
60 .Oo Ar user Ns @ Oc Ns Ar host
63 is an interactive file transfer program, similar to
65 which performs all operations over an encrypted
68 It may also use many features of ssh, such as public key authentication and
71 connects and logs into the specified
73 then enters an interactive command mode.
75 The second usage format will retrieve files automatically if a non-interactive
76 authentication method is used; otherwise it will do so after
77 successful interactive authentication.
79 The third usage format allows
81 to start in a remote directory.
83 The final usage format allows for automated sessions using the
86 In such cases, it is necessary to configure non-interactive authentication
87 to obviate the need to enter a password at connection time (see
93 Since some usage formats use colon characters to delimit host names from path
94 names, IPv6 addresses must be enclosed in square brackets to avoid ambiguity.
96 The options are as follows:
99 Specify the use of protocol version 1.
101 Specify the use of protocol version 2.
105 to use IPv4 addresses only.
109 to use IPv6 addresses only.
111 Attempt to continue interrupted transfers rather than overwriting
112 existing partial or complete copies of files.
113 If the partial contents differ from those being transferred,
114 then the resultant file is likely to be corrupt.
115 .It Fl B Ar buffer_size
116 Specify the size of the buffer that
118 uses when transferring files.
119 Larger buffers require fewer round trips at the cost of higher
121 The default is 32768 bytes.
122 .It Fl b Ar batchfile
123 Batch mode reads a series of commands from an input
127 Since it lacks user interaction it should be used in conjunction with
128 non-interactive authentication.
133 may be used to indicate standard input.
135 will abort if any of the following
137 .Ic get , put , reget , reput, rename , ln ,
138 .Ic rm , mkdir , chdir , ls ,
139 .Ic lchdir , chmod , chown ,
140 .Ic chgrp , lpwd , df , symlink ,
143 Termination on error can be suppressed on a command by command basis by
144 prefixing the command with a
146 character (for example,
147 .Ic -rm /tmp/blah* ) .
149 Enables compression (via ssh's
153 Selects the cipher to use for encrypting the data transfers.
154 This option is directly passed to
156 .It Fl D Ar sftp_server_path
157 Connect directly to a local sftp server
160 This option may be useful in debugging the client and server.
161 .It Fl F Ar ssh_config
162 Specifies an alternative
163 per-user configuration file for
165 This option is directly passed to
168 Requests that files be flushed to disk immediately after transfer.
169 When uploading files, this feature is only enabled if the server
170 implements the "fsync@openssh.com" extension.
171 .It Fl i Ar identity_file
172 Selects the file from which the identity (private key) for public key
173 authentication is read.
174 This option is directly passed to
177 Limits the used bandwidth, specified in Kbit/s.
178 .It Fl o Ar ssh_option
179 Can be used to pass options to
181 in the format used in
183 This is useful for specifying options
184 for which there is no separate
187 For example, to specify an alternate port use:
189 For full details of the options listed below, and their possible values, see
192 .Bl -tag -width Ds -offset indent -compact
197 .It CanonicalizeFallbackLocal
198 .It CanonicalizeHostname
199 .It CanonicalizeMaxDots
200 .It CanonicalizePermittedCNAMEs
201 .It ChallengeResponseAuthentication
207 .It ConnectionAttempts
212 .It GlobalKnownHostsFile
213 .It GSSAPIAuthentication
214 .It GSSAPIDelegateCredentials
217 .It HostbasedAuthentication
218 .It HostbasedKeyTypes
219 .It HostKeyAlgorithms
225 .It KbdInteractiveAuthentication
226 .It KbdInteractiveDevices
230 .It NoHostAuthenticationForLocalhost
231 .It NumberOfPasswordPrompts
232 .It PasswordAuthentication
235 .It PreferredAuthentications
238 .It PubkeyAuthentication
240 .It RhostsRSAAuthentication
241 .It RSAAuthentication
243 .It ServerAliveInterval
244 .It ServerAliveCountMax
245 .It StrictHostKeyChecking
248 .It UsePrivilegedPort
250 .It UserKnownHostsFile
254 Specifies the port to connect to on the remote host.
256 Preserves modification times, access times, and modes from the
257 original files transferred.
259 Quiet mode: disables the progress meter as well as warning and
260 diagnostic messages from
262 .It Fl R Ar num_requests
263 Specify how many requests may be outstanding at any one time.
264 Increasing this may slightly improve file transfer speed
265 but will increase memory usage.
266 The default is 64 outstanding requests.
268 Recursively copy entire directories when uploading and downloading.
271 does not follow symbolic links encountered in the tree traversal.
275 to use for the encrypted connection.
276 The program must understand
279 .It Fl s Ar subsystem | sftp_server
280 Specifies the SSH2 subsystem or the path for an sftp server
282 A path is useful for using
284 over protocol version 1, or when the remote
286 does not have an sftp subsystem configured.
289 This option is also passed to ssh.
291 .Sh INTERACTIVE COMMANDS
292 Once in interactive mode,
294 understands a set of commands similar to those of
296 Commands are case insensitive.
297 Pathnames that contain spaces must be enclosed in quotes.
298 Any special characters contained within pathnames that are recognized by
300 must be escaped with backslashes
307 Change remote directory to
309 .It Ic chgrp Ar grp Ar path
317 characters and may match multiple files.
319 must be a numeric GID.
320 .It Ic chmod Ar mode Ar path
321 Change permissions of file
328 characters and may match multiple files.
329 .It Ic chown Ar own Ar path
337 characters and may match multiple files.
339 must be a numeric UID.
344 Display usage information for the filesystem holding the current directory
350 flag is specified, the capacity information will be displayed using
351 "human-readable" suffixes.
354 flag requests display of inode information in addition to capacity information.
355 This command is only supported on servers that implement the
356 .Dq statvfs@openssh.com
368 and store it on the local machine.
370 path name is not specified, it is given the same name it has on the
375 characters and may match multiple files.
380 must specify a directory.
384 flag is specified, then attempt to resume partial transfers of existing files.
385 Note that resumption assumes that any partial copy of the local file matches
387 If the remote file contents differ from the partial local copy then the
388 resultant file is likely to be corrupt.
392 flag is specified, then
394 will be called after the file transfer has completed to flush the file
401 flag is specified, then full file permissions and access times are
406 flag is specified then directories will be copied recursively.
409 does not follow symbolic links when performing recursive transfers.
413 Change local directory to
415 .It Ic lls Op Ar ls-options Op Ar path
416 Display local directory listing of either
418 or current directory if
422 may contain any flags supported by the local system's
428 characters and may match multiple files.
429 .It Ic lmkdir Ar path
430 Create local directory specified by
443 flag is specified the created link is a symbolic link, otherwise it is
446 Print local working directory.
451 Display a remote directory listing of either
453 or the current directory if
459 characters and may match multiple files.
461 The following flags are recognized and alter the behaviour of
466 Produce single columnar output.
468 List files beginning with a dot
471 Do not sort the listing.
472 The default sort order is lexicographical.
474 When used with a long format option, use unit suffixes: Byte, Kilobyte,
475 Megabyte, Gigabyte, Terabyte, Petabyte, and Exabyte in order to reduce
476 the number of digits to four or fewer using powers of 2 for sizes (K=1024,
479 Display additional details including permissions
480 and ownership information.
482 Produce a long listing with user and group information presented
485 Reverse the sort order of the listing.
487 Sort the listing by file size.
489 Sort the listing by last modification time.
491 .It Ic lumask Ar umask
495 Create remote directory specified by
498 Toggle display of progress meter.
506 and store it on the remote machine.
507 If the remote path name is not specified, it is given the same name it has
508 on the local machine.
512 characters and may match multiple files.
517 must specify a directory.
521 flag is specified, then attempt to resume partial
522 transfers of existing files.
523 Note that resumption assumes that any partial copy of the remote file
524 matches the local copy.
525 If the local file contents differ from the remote local copy then
526 the resultant file is likely to be corrupt.
530 flag is specified, then a request will be sent to the server to call
532 after the file has been transferred.
533 Note that this is only supported by servers that implement
534 the "fsync@openssh.com" extension.
540 flag is specified, then full file permissions and access times are
545 flag is specified then directories will be copied recursively.
548 does not follow symbolic links when performing recursive transfers.
550 Display remote working directory.
578 .It Ic rename Ar oldpath Ar newpath
579 Rename remote file from
584 Delete remote file specified by
587 Remove remote directory specified by
589 .It Ic symlink Ar oldpath Ar newpath
590 Create a symbolic link from
598 .It Ic \&! Ns Ar command
603 Escape to local shell.
621 .%T "SSH File Transfer Protocol"
622 .%N draft-ietf-secsh-filexfer-00.txt
624 .%O work in progress material