1 .\" $OpenBSD: sftp.1,v 1.102 2015/09/25 18:19:54 jmc Exp $
3 .\" Copyright (c) 2001 Damien Miller. All rights reserved.
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25 .Dd $Mdocdate: September 25 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
202 .It ChallengeResponseAuthentication
208 .It ConnectionAttempts
213 .It GlobalKnownHostsFile
214 .It GSSAPIAuthentication
215 .It GSSAPIDelegateCredentials
218 .It HostbasedAuthentication
219 .It HostbasedKeyTypes
220 .It HostKeyAlgorithms
226 .It KbdInteractiveAuthentication
227 .It KbdInteractiveDevices
231 .It NoHostAuthenticationForLocalhost
232 .It NumberOfPasswordPrompts
233 .It PasswordAuthentication
236 .It PreferredAuthentications
239 .It PubkeyAuthentication
241 .It RhostsRSAAuthentication
242 .It RSAAuthentication
244 .It ServerAliveInterval
245 .It ServerAliveCountMax
246 .It StrictHostKeyChecking
249 .It UsePrivilegedPort
251 .It UserKnownHostsFile
255 Specifies the port to connect to on the remote host.
257 Preserves modification times, access times, and modes from the
258 original files transferred.
260 Quiet mode: disables the progress meter as well as warning and
261 diagnostic messages from
263 .It Fl R Ar num_requests
264 Specify how many requests may be outstanding at any one time.
265 Increasing this may slightly improve file transfer speed
266 but will increase memory usage.
267 The default is 64 outstanding requests.
269 Recursively copy entire directories when uploading and downloading.
272 does not follow symbolic links encountered in the tree traversal.
276 to use for the encrypted connection.
277 The program must understand
280 .It Fl s Ar subsystem | sftp_server
281 Specifies the SSH2 subsystem or the path for an sftp server
283 A path is useful for using
285 over protocol version 1, or when the remote
287 does not have an sftp subsystem configured.
290 This option is also passed to ssh.
292 .Sh INTERACTIVE COMMANDS
293 Once in interactive mode,
295 understands a set of commands similar to those of
297 Commands are case insensitive.
298 Pathnames that contain spaces must be enclosed in quotes.
299 Any special characters contained within pathnames that are recognized by
301 must be escaped with backslashes
308 Change remote directory to
310 .It Ic chgrp Ar grp Ar path
318 characters and may match multiple files.
320 must be a numeric GID.
321 .It Ic chmod Ar mode Ar path
322 Change permissions of file
329 characters and may match multiple files.
330 .It Ic chown Ar own Ar path
338 characters and may match multiple files.
340 must be a numeric UID.
345 Display usage information for the filesystem holding the current directory
351 flag is specified, the capacity information will be displayed using
352 "human-readable" suffixes.
355 flag requests display of inode information in addition to capacity information.
356 This command is only supported on servers that implement the
357 .Dq statvfs@openssh.com
369 and store it on the local machine.
371 path name is not specified, it is given the same name it has on the
376 characters and may match multiple files.
381 must specify a directory.
385 flag is specified, then attempt to resume partial transfers of existing files.
386 Note that resumption assumes that any partial copy of the local file matches
388 If the remote file contents differ from the partial local copy then the
389 resultant file is likely to be corrupt.
393 flag is specified, then
395 will be called after the file transfer has completed to flush the file
402 flag is specified, then full file permissions and access times are
407 flag is specified then directories will be copied recursively.
410 does not follow symbolic links when performing recursive transfers.
414 Change local directory to
416 .It Ic lls Op Ar ls-options Op Ar path
417 Display local directory listing of either
419 or current directory if
423 may contain any flags supported by the local system's
429 characters and may match multiple files.
430 .It Ic lmkdir Ar path
431 Create local directory specified by
444 flag is specified the created link is a symbolic link, otherwise it is
447 Print local working directory.
452 Display a remote directory listing of either
454 or the current directory if
460 characters and may match multiple files.
462 The following flags are recognized and alter the behaviour of
467 Produce single columnar output.
469 List files beginning with a dot
472 Do not sort the listing.
473 The default sort order is lexicographical.
475 When used with a long format option, use unit suffixes: Byte, Kilobyte,
476 Megabyte, Gigabyte, Terabyte, Petabyte, and Exabyte in order to reduce
477 the number of digits to four or fewer using powers of 2 for sizes (K=1024,
480 Display additional details including permissions
481 and ownership information.
483 Produce a long listing with user and group information presented
486 Reverse the sort order of the listing.
488 Sort the listing by file size.
490 Sort the listing by last modification time.
492 .It Ic lumask Ar umask
496 Create remote directory specified by
499 Toggle display of progress meter.
507 and store it on the remote machine.
508 If the remote path name is not specified, it is given the same name it has
509 on the local machine.
513 characters and may match multiple files.
518 must specify a directory.
522 flag is specified, then attempt to resume partial
523 transfers of existing files.
524 Note that resumption assumes that any partial copy of the remote file
525 matches the local copy.
526 If the local file contents differ from the remote local copy then
527 the resultant file is likely to be corrupt.
531 flag is specified, then a request will be sent to the server to call
533 after the file has been transferred.
534 Note that this is only supported by servers that implement
535 the "fsync@openssh.com" extension.
541 flag is specified, then full file permissions and access times are
546 flag is specified then directories will be copied recursively.
549 does not follow symbolic links when performing recursive transfers.
551 Display remote working directory.
579 .It Ic rename Ar oldpath Ar newpath
580 Rename remote file from
585 Delete remote file specified by
588 Remove remote directory specified by
590 .It Ic symlink Ar oldpath Ar newpath
591 Create a symbolic link from
599 .It Ic \&! Ns Ar command
604 Escape to local shell.
622 .%T "SSH File Transfer Protocol"
623 .%N draft-ietf-secsh-filexfer-00.txt
625 .%O work in progress material