Annotation of src/usr.bin/ssh/sftp.1, Revision 1.110
1.110 ! naddy 1: .\" $OpenBSD: sftp.1,v 1.109 2017/05/03 06:32:02 jmc Exp $
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1.110 ! naddy 25: .Dd $Mdocdate: May 3 2017 $
1.1 djm 26: .Dt SFTP 1
27: .Os
28: .Sh NAME
29: .Nm sftp
1.44 jmc 30: .Nd secure file transfer program
1.1 djm 31: .Sh SYNOPSIS
1.43 jmc 32: .Nm sftp
1.41 jmc 33: .Bk -words
1.106 djm 34: .Op Fl 46aCfpqrv
1.46 jmc 35: .Op Fl B Ar buffer_size
1.29 markus 36: .Op Fl b Ar batchfile
1.70 djm 37: .Op Fl c Ar cipher
1.72 djm 38: .Op Fl D Ar sftp_server_path
1.46 jmc 39: .Op Fl F Ar ssh_config
1.73 jmc 40: .Op Fl i Ar identity_file
1.85 djm 41: .Op Fl l Ar limit
1.29 markus 42: .Op Fl o Ar ssh_option
1.72 djm 43: .Op Fl P Ar port
1.30 djm 44: .Op Fl R Ar num_requests
1.26 stevesk 45: .Op Fl S Ar program
1.46 jmc 46: .Op Fl s Ar subsystem | sftp_server
1.26 stevesk 47: .Ar host
1.41 jmc 48: .Ek
1.43 jmc 49: .Nm sftp
1.68 djm 50: .Oo Ar user Ns @ Oc Ns
51: .Ar host Ns Op : Ns Ar
1.43 jmc 52: .Nm sftp
1.84 jmc 53: .Oo
54: .Ar user Ns @ Oc Ns
1.41 jmc 55: .Ar host Ns Oo : Ns Ar dir Ns
1.84 jmc 56: .Op Ar /
57: .Oc
1.43 jmc 58: .Nm sftp
1.42 djm 59: .Fl b Ar batchfile
1.45 jmc 60: .Oo Ar user Ns @ Oc Ns Ar host
1.1 djm 61: .Sh DESCRIPTION
62: .Nm
63: is an interactive file transfer program, similar to
64: .Xr ftp 1 ,
65: which performs all operations over an encrypted
66: .Xr ssh 1
67: transport.
68: It may also use many features of ssh, such as public key authentication and
69: compression.
70: .Nm
71: connects and logs into the specified
1.18 stevesk 72: .Ar host ,
1.1 djm 73: then enters an interactive command mode.
1.15 mouring 74: .Pp
1.21 itojun 75: The second usage format will retrieve files automatically if a non-interactive
1.18 stevesk 76: authentication method is used; otherwise it will do so after
77: successful interactive authentication.
1.15 mouring 78: .Pp
1.60 jaredy 79: The third usage format allows
80: .Nm
81: to start in a remote directory.
1.1 djm 82: .Pp
1.44 jmc 83: The final usage format allows for automated sessions using the
1.42 djm 84: .Fl b
1.44 jmc 85: option.
1.62 jmc 86: In such cases, it is necessary to configure non-interactive authentication
1.44 jmc 87: to obviate the need to enter a password at connection time (see
1.42 djm 88: .Xr sshd 8
1.43 jmc 89: and
1.42 djm 90: .Xr ssh-keygen 1
1.44 jmc 91: for details).
1.89 djm 92: .Pp
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.
95: .Pp
1.1 djm 96: The options are as follows:
97: .Bl -tag -width Ds
1.70 djm 98: .It Fl 4
99: Forces
100: .Nm
101: to use IPv4 addresses only.
102: .It Fl 6
103: Forces
104: .Nm
105: to use IPv6 addresses only.
1.94 jmc 106: .It Fl a
1.99 jmc 107: Attempt to continue interrupted transfers rather than overwriting
1.98 logan 108: existing partial or complete copies of files.
1.99 jmc 109: If the partial contents differ from those being transferred,
1.98 logan 110: then the resultant file is likely to be corrupt.
1.46 jmc 111: .It Fl B Ar buffer_size
112: Specify the size of the buffer that
113: .Nm
114: uses when transferring files.
115: Larger buffers require fewer round trips at the cost of higher
116: memory consumption.
117: The default is 32768 bytes.
1.10 deraadt 118: .It Fl b Ar batchfile
119: Batch mode reads a series of commands from an input
1.13 stevesk 120: .Ar batchfile
1.10 deraadt 121: instead of
1.13 stevesk 122: .Em stdin .
123: Since it lacks user interaction it should be used in conjunction with
1.51 jmc 124: non-interactive authentication.
1.50 djm 125: A
1.51 jmc 126: .Ar batchfile
127: of
128: .Sq \-
1.50 djm 129: may be used to indicate standard input.
1.13 stevesk 130: .Nm
1.21 itojun 131: will abort if any of the following
132: commands fail:
1.98 logan 133: .Ic get , put , reget , reput, rename , ln ,
1.41 jmc 134: .Ic rm , mkdir , chdir , ls ,
1.66 jmc 135: .Ic lchdir , chmod , chown ,
1.88 djm 136: .Ic chgrp , lpwd , df , symlink ,
1.10 deraadt 137: and
1.13 stevesk 138: .Ic lmkdir .
1.41 jmc 139: Termination on error can be suppressed on a command by command basis by
140: prefixing the command with a
1.51 jmc 141: .Sq \-
1.44 jmc 142: character (for example,
143: .Ic -rm /tmp/blah* ) .
1.71 jmc 144: .It Fl C
145: Enables compression (via ssh's
146: .Fl C
147: flag).
1.70 djm 148: .It Fl c Ar cipher
149: Selects the cipher to use for encrypting the data transfers.
150: This option is directly passed to
151: .Xr ssh 1 .
1.72 djm 152: .It Fl D Ar sftp_server_path
153: Connect directly to a local sftp server
154: (rather than via
155: .Xr ssh 1 ) .
156: This option may be useful in debugging the client and server.
1.46 jmc 157: .It Fl F Ar ssh_config
158: Specifies an alternative
159: per-user configuration file for
160: .Xr ssh 1 .
161: This option is directly passed to
162: .Xr ssh 1 .
1.95 djm 163: .It Fl f
164: Requests that files be flushed to disk immediately after transfer.
165: When uploading files, this feature is only enabled if the server
166: implements the "fsync@openssh.com" extension.
1.70 djm 167: .It Fl i Ar identity_file
168: Selects the file from which the identity (private key) for public key
169: authentication is read.
170: This option is directly passed to
171: .Xr ssh 1 .
1.85 djm 172: .It Fl l Ar limit
173: Limits the used bandwidth, specified in Kbit/s.
1.1 djm 174: .It Fl o Ar ssh_option
1.23 stevesk 175: Can be used to pass options to
176: .Nm ssh
1.35 stevesk 177: in the format used in
178: .Xr ssh_config 5 .
179: This is useful for specifying options
1.23 stevesk 180: for which there is no separate
181: .Nm sftp
1.44 jmc 182: command-line flag.
183: For example, to specify an alternate port use:
1.26 stevesk 184: .Ic sftp -oPort=24 .
1.46 jmc 185: For full details of the options listed below, and their possible values, see
186: .Xr ssh_config 5 .
187: .Pp
188: .Bl -tag -width Ds -offset indent -compact
189: .It AddressFamily
190: .It BatchMode
191: .It BindAddress
1.97 djm 192: .It CanonicalDomains
193: .It CanonicalizeFallbackLocal
194: .It CanonicalizeHostname
195: .It CanonicalizeMaxDots
196: .It CanonicalizePermittedCNAMEs
1.102 jmc 197: .It CertificateFile
1.46 jmc 198: .It ChallengeResponseAuthentication
199: .It CheckHostIP
200: .It Ciphers
201: .It Compression
1.110 ! naddy 202: .It ConnectionAttempts
1.54 dtucker 203: .It ConnectTimeout
1.55 djm 204: .It ControlMaster
205: .It ControlPath
1.91 djm 206: .It ControlPersist
1.46 jmc 207: .It GlobalKnownHostsFile
208: .It GSSAPIAuthentication
209: .It GSSAPIDelegateCredentials
1.61 jmc 210: .It HashKnownHosts
1.46 jmc 211: .It Host
212: .It HostbasedAuthentication
1.101 djm 213: .It HostbasedKeyTypes
1.46 jmc 214: .It HostKeyAlgorithms
215: .It HostKeyAlias
216: .It HostName
1.104 jmc 217: .It IdentitiesOnly
1.103 markus 218: .It IdentityAgent
1.46 jmc 219: .It IdentityFile
1.87 jmc 220: .It IPQoS
1.91 djm 221: .It KbdInteractiveAuthentication
1.58 djm 222: .It KbdInteractiveDevices
1.86 jmc 223: .It KexAlgorithms
1.46 jmc 224: .It LogLevel
225: .It MACs
226: .It NoHostAuthenticationForLocalhost
227: .It NumberOfPasswordPrompts
228: .It PasswordAuthentication
1.83 markus 229: .It PKCS11Provider
1.46 jmc 230: .It Port
231: .It PreferredAuthentications
232: .It ProxyCommand
1.105 jmc 233: .It ProxyJump
1.108 jmc 234: .It PubkeyAcceptedKeyTypes
1.46 jmc 235: .It PubkeyAuthentication
1.63 dtucker 236: .It RekeyLimit
1.53 jmc 237: .It SendEnv
1.49 markus 238: .It ServerAliveInterval
239: .It ServerAliveCountMax
1.46 jmc 240: .It StrictHostKeyChecking
1.48 markus 241: .It TCPKeepAlive
1.100 djm 242: .It UpdateHostKeys
1.46 jmc 243: .It UsePrivilegedPort
244: .It User
245: .It UserKnownHostsFile
246: .It VerifyHostKeyDNS
247: .El
1.72 djm 248: .It Fl P Ar port
249: Specifies the port to connect to on the remote host.
1.74 djm 250: .It Fl p
251: Preserves modification times, access times, and modes from the
252: original files transferred.
1.70 djm 253: .It Fl q
254: Quiet mode: disables the progress meter as well as warning and
255: diagnostic messages from
256: .Xr ssh 1 .
1.30 djm 257: .It Fl R Ar num_requests
1.44 jmc 258: Specify how many requests may be outstanding at any one time.
259: Increasing this may slightly improve file transfer speed
260: but will increase memory usage.
1.67 djm 261: The default is 64 outstanding requests.
1.74 djm 262: .It Fl r
263: Recursively copy entire directories when uploading and downloading.
264: Note that
265: .Nm
266: does not follow symbolic links encountered in the tree traversal.
1.26 stevesk 267: .It Fl S Ar program
268: Name of the
269: .Ar program
270: to use for the encrypted connection.
271: The program must understand
272: .Xr ssh 1
273: options.
1.46 jmc 274: .It Fl s Ar subsystem | sftp_server
275: Specifies the SSH2 subsystem or the path for an sftp server
276: on the remote host.
1.109 jmc 277: A path is useful when the remote
1.46 jmc 278: .Xr sshd 8
279: does not have an sftp subsystem configured.
280: .It Fl v
281: Raise logging level.
282: This option is also passed to ssh.
1.1 djm 283: .El
284: .Sh INTERACTIVE COMMANDS
1.2 djm 285: Once in interactive mode,
286: .Nm
1.21 itojun 287: understands a set of commands similar to those of
1.1 djm 288: .Xr ftp 1 .
1.60 jaredy 289: Commands are case insensitive.
290: Pathnames that contain spaces must be enclosed in quotes.
291: Any special characters contained within pathnames that are recognized by
292: .Xr glob 3
293: must be escaped with backslashes
294: .Pq Sq \e .
295: .Bl -tag -width Ds
1.22 markus 296: .It Ic bye
1.44 jmc 297: Quit
298: .Nm sftp .
1.3 deraadt 299: .It Ic cd Ar path
1.21 itojun 300: Change remote directory to
1.3 deraadt 301: .Ar path .
302: .It Ic chgrp Ar grp Ar path
1.21 itojun 303: Change group of file
1.5 stevesk 304: .Ar path
305: to
1.1 djm 306: .Ar grp .
1.60 jaredy 307: .Ar path
308: may contain
309: .Xr glob 3
310: characters and may match multiple files.
1.1 djm 311: .Ar grp
1.5 stevesk 312: must be a numeric GID.
1.3 deraadt 313: .It Ic chmod Ar mode Ar path
1.21 itojun 314: Change permissions of file
1.5 stevesk 315: .Ar path
316: to
1.3 deraadt 317: .Ar mode .
1.60 jaredy 318: .Ar path
319: may contain
320: .Xr glob 3
321: characters and may match multiple files.
1.3 deraadt 322: .It Ic chown Ar own Ar path
1.21 itojun 323: Change owner of file
1.5 stevesk 324: .Ar path
325: to
1.1 djm 326: .Ar own .
1.60 jaredy 327: .Ar path
328: may contain
329: .Xr glob 3
330: characters and may match multiple files.
1.1 djm 331: .Ar own
332: must be a numeric UID.
1.65 djm 333: .It Xo Ic df
334: .Op Fl hi
335: .Op Ar path
336: .Xc
337: Display usage information for the filesystem holding the current directory
338: (or
339: .Ar path
340: if specified).
341: If the
342: .Fl h
343: flag is specified, the capacity information will be displayed using
344: "human-readable" suffixes.
345: The
346: .Fl i
347: flag requests display of inode information in addition to capacity information.
348: This command is only supported on servers that implement the
349: .Dq statvfs@openssh.com
350: extension.
1.11 deraadt 351: .It Ic exit
1.44 jmc 352: Quit
353: .Nm sftp .
1.7 djm 354: .It Xo Ic get
1.95 djm 355: .Op Fl afPpr
1.7 djm 356: .Ar remote-path
357: .Op Ar local-path
358: .Xc
1.1 djm 359: Retrieve the
1.5 stevesk 360: .Ar remote-path
1.1 djm 361: and store it on the local machine.
362: If the local
1.21 itojun 363: path name is not specified, it is given the same name it has on the
1.44 jmc 364: remote machine.
1.60 jaredy 365: .Ar remote-path
366: may contain
367: .Xr glob 3
368: characters and may match multiple files.
369: If it does and
370: .Ar local-path
371: is specified, then
372: .Ar local-path
373: must specify a directory.
1.74 djm 374: .Pp
1.92 djm 375: If the
376: .Fl a
377: flag is specified, then attempt to resume partial transfers of existing files.
378: Note that resumption assumes that any partial copy of the local file matches
379: the remote copy.
1.93 djm 380: If the remote file contents differ from the partial local copy then the
381: resultant file is likely to be corrupt.
1.92 djm 382: .Pp
1.95 djm 383: If the
384: .Fl f
385: flag is specified, then
386: .Xr fsync 2
1.96 jmc 387: will be called after the file transfer has completed to flush the file
1.95 djm 388: to disk.
389: .Pp
1.76 jmc 390: If either the
1.75 djm 391: .Fl P
1.74 djm 392: or
393: .Fl p
1.60 jaredy 394: flag is specified, then full file permissions and access times are
1.7 djm 395: copied too.
1.74 djm 396: .Pp
397: If the
398: .Fl r
399: flag is specified then directories will be copied recursively.
400: Note that
401: .Nm
402: does not follow symbolic links when performing recursive transfers.
1.11 deraadt 403: .It Ic help
404: Display help text.
1.46 jmc 405: .It Ic lcd Ar path
406: Change local directory to
407: .Ar path .
1.3 deraadt 408: .It Ic lls Op Ar ls-options Op Ar path
1.21 itojun 409: Display local directory listing of either
1.1 djm 410: .Ar path
411: or current directory if
412: .Ar path
1.5 stevesk 413: is not specified.
1.60 jaredy 414: .Ar ls-options
415: may contain any flags supported by the local system's
416: .Xr ls 1
417: command.
418: .Ar path
419: may contain
420: .Xr glob 3
421: characters and may match multiple files.
1.3 deraadt 422: .It Ic lmkdir Ar path
1.1 djm 423: Create local directory specified by
1.3 deraadt 424: .Ar path .
1.88 djm 425: .It Xo Ic ln
426: .Op Fl s
427: .Ar oldpath
428: .Ar newpath
429: .Xc
430: Create a link from
1.12 djm 431: .Ar oldpath
432: to
433: .Ar newpath .
1.88 djm 434: If the
435: .Fl s
436: flag is specified the created link is a symbolic link, otherwise it is
437: a hard link.
1.3 deraadt 438: .It Ic lpwd
439: Print local working directory.
1.36 djm 440: .It Xo Ic ls
1.82 jmc 441: .Op Fl 1afhlnrSt
1.36 djm 442: .Op Ar path
443: .Xc
1.60 jaredy 444: Display a remote directory listing of either
1.1 djm 445: .Ar path
1.60 jaredy 446: or the current directory if
1.5 stevesk 447: .Ar path
1.44 jmc 448: is not specified.
1.60 jaredy 449: .Ar path
450: may contain
451: .Xr glob 3
452: characters and may match multiple files.
453: .Pp
454: The following flags are recognized and alter the behaviour of
455: .Ic ls
456: accordingly:
457: .Bl -tag -width Ds
458: .It Fl 1
459: Produce single columnar output.
460: .It Fl a
461: List files beginning with a dot
462: .Pq Sq \&. .
463: .It Fl f
464: Do not sort the listing.
465: The default sort order is lexicographical.
1.81 djm 466: .It Fl h
467: When used with a long format option, use unit suffixes: Byte, Kilobyte,
468: Megabyte, Gigabyte, Terabyte, Petabyte, and Exabyte in order to reduce
469: the number of digits to four or fewer using powers of 2 for sizes (K=1024,
470: M=1048576, etc.).
1.82 jmc 471: .It Fl l
472: Display additional details including permissions
473: and ownership information.
1.60 jaredy 474: .It Fl n
475: Produce a long listing with user and group information presented
1.56 djm 476: numerically.
1.60 jaredy 477: .It Fl r
478: Reverse the sort order of the listing.
479: .It Fl S
480: Sort the listing by file size.
481: .It Fl t
482: Sort the listing by last modification time.
483: .El
1.3 deraadt 484: .It Ic lumask Ar umask
1.21 itojun 485: Set local umask to
1.3 deraadt 486: .Ar umask .
487: .It Ic mkdir Ar path
1.1 djm 488: Create remote directory specified by
1.3 deraadt 489: .Ar path .
1.40 fgsch 490: .It Ic progress
491: Toggle display of progress meter.
1.7 djm 492: .It Xo Ic put
1.98 logan 493: .Op Fl afPpr
1.7 djm 494: .Ar local-path
1.37 djm 495: .Op Ar remote-path
1.7 djm 496: .Xc
1.1 djm 497: Upload
1.5 stevesk 498: .Ar local-path
1.44 jmc 499: and store it on the remote machine.
500: If the remote path name is not specified, it is given the same name it has
501: on the local machine.
1.60 jaredy 502: .Ar local-path
503: may contain
504: .Xr glob 3
505: characters and may match multiple files.
506: If it does and
507: .Ar remote-path
508: is specified, then
509: .Ar remote-path
510: must specify a directory.
1.95 djm 511: .Pp
512: If the
1.99 jmc 513: .Fl a
1.98 logan 514: flag is specified, then attempt to resume partial
515: transfers of existing files.
1.99 jmc 516: Note that resumption assumes that any partial copy of the remote file
1.98 logan 517: matches the local copy.
518: If the local file contents differ from the remote local copy then
519: the resultant file is likely to be corrupt.
520: .Pp
521: If the
1.95 djm 522: .Fl f
523: flag is specified, then a request will be sent to the server to call
524: .Xr fsync 2
525: after the file has been transferred.
526: Note that this is only supported by servers that implement
527: the "fsync@openssh.com" extension.
1.74 djm 528: .Pp
1.90 dtucker 529: If either the
1.7 djm 530: .Fl P
1.74 djm 531: or
532: .Fl p
533: flag is specified, then full file permissions and access times are
1.7 djm 534: copied too.
1.74 djm 535: .Pp
536: If the
537: .Fl r
538: flag is specified then directories will be copied recursively.
539: Note that
540: .Nm
541: does not follow symbolic links when performing recursive transfers.
1.3 deraadt 542: .It Ic pwd
543: Display remote working directory.
544: .It Ic quit
1.44 jmc 545: Quit
546: .Nm sftp .
1.92 djm 547: .It Xo Ic reget
548: .Op Fl Ppr
549: .Ar remote-path
550: .Op Ar local-path
551: .Xc
552: Resume download of
553: .Ar remote-path .
554: Equivalent to
555: .Ic get
556: with the
1.98 logan 557: .Fl a
558: flag set.
559: .It Xo Ic reput
560: .Op Fl Ppr
561: .Op Ar local-path
562: .Ar remote-path
563: .Xc
564: Resume upload of
565: .Op Ar local-path .
566: Equivalent to
567: .Ic put
1.99 jmc 568: with the
1.92 djm 569: .Fl a
570: flag set.
1.3 deraadt 571: .It Ic rename Ar oldpath Ar newpath
1.1 djm 572: Rename remote file from
573: .Ar oldpath
574: to
1.3 deraadt 575: .Ar newpath .
1.46 jmc 576: .It Ic rm Ar path
577: Delete remote file specified by
578: .Ar path .
1.3 deraadt 579: .It Ic rmdir Ar path
1.1 djm 580: Remove remote directory specified by
1.3 deraadt 581: .Ar path .
1.12 djm 582: .It Ic symlink Ar oldpath Ar newpath
1.21 itojun 583: Create a symbolic link from
1.12 djm 584: .Ar oldpath
585: to
586: .Ar newpath .
1.38 fgsch 587: .It Ic version
588: Display the
589: .Nm
590: protocol version.
1.69 sobrado 591: .It Ic \&! Ns Ar command
1.21 itojun 592: Execute
1.1 djm 593: .Ar command
1.3 deraadt 594: in local shell.
1.45 jmc 595: .It Ic \&!
1.3 deraadt 596: Escape to local shell.
1.45 jmc 597: .It Ic \&?
1.5 stevesk 598: Synonym for help.
1.4 itojun 599: .El
1.1 djm 600: .Sh SEE ALSO
1.46 jmc 601: .Xr ftp 1 ,
1.60 jaredy 602: .Xr ls 1 ,
1.17 markus 603: .Xr scp 1 ,
1.1 djm 604: .Xr ssh 1 ,
605: .Xr ssh-add 1 ,
606: .Xr ssh-keygen 1 ,
1.60 jaredy 607: .Xr glob 3 ,
1.35 stevesk 608: .Xr ssh_config 5 ,
1.17 markus 609: .Xr sftp-server 8 ,
610: .Xr sshd 8
611: .Rs
1.20 deraadt 612: .%A T. Ylonen
613: .%A S. Lehtinen
1.17 markus 614: .%T "SSH File Transfer Protocol"
615: .%N draft-ietf-secsh-filexfer-00.txt
616: .%D January 2001
617: .%O work in progress material
618: .Re