1 .\" $OpenBSD: sftp.1,v 1.54 2004/05/02 23:02:17 dtucker Exp $
3 .\" Copyright (c) 2001 Damien Miller. All rights reserved.
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30 .Nd secure file transfer program
35 .Op Fl B Ar buffer_size
37 .Op Fl F Ar ssh_config
38 .Op Fl o Ar ssh_option
39 .Op Fl P Ar sftp_server_path
40 .Op Fl R Ar num_requests
42 .Op Fl s Ar subsystem | sftp_server
46 .Oo Oo Ar user Ns @ Oc Ns
47 .Ar host Ns Oo : Ns Ar file Oo
50 .Oo Oo Ar user Ns @ Oc Ns
51 .Ar host Ns Oo : Ns Ar dir Ns
55 .Oo Ar user Ns @ Oc Ns Ar host
58 is an interactive file transfer program, similar to
60 which performs all operations over an encrypted
63 It may also use many features of ssh, such as public key authentication and
66 connects and logs into the specified
68 then enters an interactive command mode.
70 The second usage format will retrieve files automatically if a non-interactive
71 authentication method is used; otherwise it will do so after
72 successful interactive authentication.
74 The third usage format allows the sftp client to start in a remote directory.
76 The final usage format allows for automated sessions using the
79 In such cases, it is usually necessary to configure public key authentication
80 to obviate the need to enter a password at connection time (see
85 The options are as follows:
88 Specify the use of protocol version 1.
89 .It Fl B Ar buffer_size
90 Specify the size of the buffer that
92 uses when transferring files.
93 Larger buffers require fewer round trips at the cost of higher
95 The default is 32768 bytes.
97 Batch mode reads a series of commands from an input
101 Since it lacks user interaction it should be used in conjunction with
102 non-interactive authentication.
107 may be used to indicate standard input.
109 will abort if any of the following
111 .Ic get , put , rename , ln ,
112 .Ic rm , mkdir , chdir , ls ,
113 .Ic lchdir , chmod , chown , chgrp , lpwd
116 Termination on error can be suppressed on a command by command basis by
117 prefixing the command with a
119 character (for example,
120 .Ic -rm /tmp/blah* ) .
122 Enables compression (via ssh's
125 .It Fl F Ar ssh_config
126 Specifies an alternative
127 per-user configuration file for
129 This option is directly passed to
131 .It Fl o Ar ssh_option
132 Can be used to pass options to
134 in the format used in
136 This is useful for specifying options
137 for which there is no separate
140 For example, to specify an alternate port use:
142 For full details of the options listed below, and their possible values, see
145 .Bl -tag -width Ds -offset indent -compact
149 .It ChallengeResponseAuthentication
155 .It ConnectionAttempts
157 .It GlobalKnownHostsFile
158 .It GSSAPIAuthentication
159 .It GSSAPIDelegateCredentials
161 .It HostbasedAuthentication
162 .It HostKeyAlgorithms
169 .It NoHostAuthenticationForLocalhost
170 .It NumberOfPasswordPrompts
171 .It PasswordAuthentication
173 .It PreferredAuthentications
176 .It PubkeyAuthentication
177 .It RhostsRSAAuthentication
178 .It RSAAuthentication
180 .It ServerAliveInterval
181 .It ServerAliveCountMax
183 .It StrictHostKeyChecking
185 .It UsePrivilegedPort
187 .It UserKnownHostsFile
190 .It Fl P Ar sftp_server_path
191 Connect directly to a local sftp server
194 This option may be useful in debugging the client and server.
195 .It Fl R Ar num_requests
196 Specify how many requests may be outstanding at any one time.
197 Increasing this may slightly improve file transfer speed
198 but will increase memory usage.
199 The default is 16 outstanding requests.
203 to use for the encrypted connection.
204 The program must understand
207 .It Fl s Ar subsystem | sftp_server
208 Specifies the SSH2 subsystem or the path for an sftp server
210 A path is useful for using
212 over protocol version 1, or when the remote
214 does not have an sftp subsystem configured.
217 This option is also passed to ssh.
219 .Sh INTERACTIVE COMMANDS
220 Once in interactive mode,
222 understands a set of commands similar to those of
224 Commands are case insensitive and pathnames may be enclosed in quotes if they
226 .Bl -tag -width "lmdir path"
231 Change remote directory to
233 .It Ic chgrp Ar grp Ar path
239 must be a numeric GID.
240 .It Ic chmod Ar mode Ar path
241 Change permissions of file
245 .It Ic chown Ar own Ar path
251 must be a numeric UID.
262 and store it on the local machine.
264 path name is not specified, it is given the same name it has on the
268 flag is specified, then the file's full permission and access time are
273 Change local directory to
275 .It Ic lls Op Ar ls-options Op Ar path
276 Display local directory listing of either
278 or current directory if
281 .It Ic lmkdir Ar path
282 Create local directory specified by
284 .It Ic ln Ar oldpath Ar newpath
285 Create a symbolic link from
290 Print local working directory.
295 Display remote directory listing of either
297 or current directory if
302 flag is specified, then display additional details including permissions
303 and ownership information.
304 .It Ic lumask Ar umask
308 Create remote directory specified by
311 Toggle display of progress meter.
319 and store it on the remote machine.
320 If the remote path name is not specified, it is given the same name it has
321 on the local machine.
324 flag is specified, then the file's full permission and access time are
327 Display remote working directory.
331 .It Ic rename Ar oldpath Ar newpath
332 Rename remote file from
337 Delete remote file specified by
340 Remove remote directory specified by
342 .It Ic symlink Ar oldpath Ar newpath
343 Create a symbolic link from
351 .It Ic \&! Ar command
356 Escape to local shell.
372 .%T "SSH File Transfer Protocol"
373 .%N draft-ietf-secsh-filexfer-00.txt
375 .%O work in progress material