Annotation of src/usr.bin/ssh/sftp.1, Revision 1.115
1.115 ! djm 1: .\" $OpenBSD: sftp.1,v 1.114 2018/02/23 07:38:09 jmc Exp $
1.1 djm 2: .\"
1.9 deraadt 3: .\" Copyright (c) 2001 Damien Miller. All rights reserved.
1.1 djm 4: .\"
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1.115 ! djm 25: .Dd $Mdocdate: February 23 2018 $
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
1.106 djm 33: .Op Fl 46aCfpqrv
1.46 jmc 34: .Op Fl B Ar buffer_size
1.29 markus 35: .Op Fl b Ar batchfile
1.70 djm 36: .Op Fl c Ar cipher
1.72 djm 37: .Op Fl D Ar sftp_server_path
1.46 jmc 38: .Op Fl F Ar ssh_config
1.73 jmc 39: .Op Fl i Ar identity_file
1.85 djm 40: .Op Fl l Ar limit
1.29 markus 41: .Op Fl o Ar ssh_option
1.72 djm 42: .Op Fl P Ar port
1.30 djm 43: .Op Fl R Ar num_requests
1.26 stevesk 44: .Op Fl S Ar program
1.46 jmc 45: .Op Fl s Ar subsystem | sftp_server
1.111 millert 46: .Ar destination
1.1 djm 47: .Sh DESCRIPTION
48: .Nm
1.111 millert 49: is a file transfer program, similar to
1.1 djm 50: .Xr ftp 1 ,
51: which performs all operations over an encrypted
52: .Xr ssh 1
53: transport.
54: It may also use many features of ssh, such as public key authentication and
55: compression.
1.111 millert 56: .Pp
57: The
58: .Ar destination
59: may be specified either as
1.112 jmc 60: .Sm off
61: .Oo user @ Oc host Op : path
62: .Sm on
63: or as a URI in the form
64: .Sm off
65: .No sftp:// Oo user @ Oc host Oo : port Oc Op / path .
66: .Sm on
1.111 millert 67: .Pp
68: If the
69: .Ar destination
70: includes a
71: .Ar path
72: and it is not a directory,
1.1 djm 73: .Nm
1.111 millert 74: will retrieve files automatically if a non-interactive
1.18 stevesk 75: authentication method is used; otherwise it will do so after
76: successful interactive authentication.
1.15 mouring 77: .Pp
1.111 millert 78: If no
79: .Ar path
80: is specified, or if the
81: .Ar path
82: is a directory,
1.60 jaredy 83: .Nm
1.111 millert 84: will log in to the specified
85: .Ar host
86: and enter interactive command mode, changing to the remote directory
87: if one was specified.
88: An optional trailing slash can be used to force the
89: .Ar path
90: to be interpreted as a directory.
1.1 djm 91: .Pp
1.111 millert 92: Since the destination formats use colon characters to delimit host
93: names from path names or port numbers, IPv6 addresses must be
94: enclosed in square brackets to avoid ambiguity.
1.89 djm 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
1.111 millert 124: non-interactive authentication to obviate the need to enter a password
125: at connection time (see
126: .Xr sshd 8
127: and
128: .Xr ssh-keygen 1
129: for details).
1.50 djm 130: A
1.51 jmc 131: .Ar batchfile
132: of
133: .Sq \-
1.50 djm 134: may be used to indicate standard input.
1.13 stevesk 135: .Nm
1.21 itojun 136: will abort if any of the following
137: commands fail:
1.98 logan 138: .Ic get , put , reget , reput, rename , ln ,
1.41 jmc 139: .Ic rm , mkdir , chdir , ls ,
1.66 jmc 140: .Ic lchdir , chmod , chown ,
1.88 djm 141: .Ic chgrp , lpwd , df , symlink ,
1.10 deraadt 142: and
1.13 stevesk 143: .Ic lmkdir .
1.41 jmc 144: Termination on error can be suppressed on a command by command basis by
145: prefixing the command with a
1.51 jmc 146: .Sq \-
1.44 jmc 147: character (for example,
148: .Ic -rm /tmp/blah* ) .
1.71 jmc 149: .It Fl C
150: Enables compression (via ssh's
151: .Fl C
152: flag).
1.70 djm 153: .It Fl c Ar cipher
154: Selects the cipher to use for encrypting the data transfers.
155: This option is directly passed to
156: .Xr ssh 1 .
1.72 djm 157: .It Fl D Ar sftp_server_path
158: Connect directly to a local sftp server
159: (rather than via
160: .Xr ssh 1 ) .
161: This option may be useful in debugging the client and server.
1.46 jmc 162: .It Fl F Ar ssh_config
163: Specifies an alternative
164: per-user configuration file for
165: .Xr ssh 1 .
166: This option is directly passed to
167: .Xr ssh 1 .
1.95 djm 168: .It Fl f
169: Requests that files be flushed to disk immediately after transfer.
170: When uploading files, this feature is only enabled if the server
171: implements the "fsync@openssh.com" extension.
1.70 djm 172: .It Fl i Ar identity_file
173: Selects the file from which the identity (private key) for public key
174: authentication is read.
175: This option is directly passed to
176: .Xr ssh 1 .
1.85 djm 177: .It Fl l Ar limit
178: Limits the used bandwidth, specified in Kbit/s.
1.1 djm 179: .It Fl o Ar ssh_option
1.23 stevesk 180: Can be used to pass options to
181: .Nm ssh
1.35 stevesk 182: in the format used in
183: .Xr ssh_config 5 .
184: This is useful for specifying options
1.23 stevesk 185: for which there is no separate
186: .Nm sftp
1.44 jmc 187: command-line flag.
188: For example, to specify an alternate port use:
1.26 stevesk 189: .Ic sftp -oPort=24 .
1.46 jmc 190: For full details of the options listed below, and their possible values, see
191: .Xr ssh_config 5 .
192: .Pp
193: .Bl -tag -width Ds -offset indent -compact
194: .It AddressFamily
195: .It BatchMode
196: .It BindAddress
1.114 jmc 197: .It BindInterface
1.97 djm 198: .It CanonicalDomains
199: .It CanonicalizeFallbackLocal
200: .It CanonicalizeHostname
201: .It CanonicalizeMaxDots
202: .It CanonicalizePermittedCNAMEs
1.102 jmc 203: .It CertificateFile
1.46 jmc 204: .It ChallengeResponseAuthentication
205: .It CheckHostIP
206: .It Ciphers
207: .It Compression
1.110 naddy 208: .It ConnectionAttempts
1.54 dtucker 209: .It ConnectTimeout
1.55 djm 210: .It ControlMaster
211: .It ControlPath
1.91 djm 212: .It ControlPersist
1.46 jmc 213: .It GlobalKnownHostsFile
214: .It GSSAPIAuthentication
215: .It GSSAPIDelegateCredentials
1.61 jmc 216: .It HashKnownHosts
1.46 jmc 217: .It Host
218: .It HostbasedAuthentication
1.101 djm 219: .It HostbasedKeyTypes
1.46 jmc 220: .It HostKeyAlgorithms
221: .It HostKeyAlias
222: .It HostName
1.104 jmc 223: .It IdentitiesOnly
1.103 markus 224: .It IdentityAgent
1.46 jmc 225: .It IdentityFile
1.87 jmc 226: .It IPQoS
1.91 djm 227: .It KbdInteractiveAuthentication
1.58 djm 228: .It KbdInteractiveDevices
1.86 jmc 229: .It KexAlgorithms
1.46 jmc 230: .It LogLevel
231: .It MACs
232: .It NoHostAuthenticationForLocalhost
233: .It NumberOfPasswordPrompts
234: .It PasswordAuthentication
1.83 markus 235: .It PKCS11Provider
1.46 jmc 236: .It Port
237: .It PreferredAuthentications
238: .It ProxyCommand
1.105 jmc 239: .It ProxyJump
1.108 jmc 240: .It PubkeyAcceptedKeyTypes
1.46 jmc 241: .It PubkeyAuthentication
1.63 dtucker 242: .It RekeyLimit
1.53 jmc 243: .It SendEnv
1.115 ! djm 244: .It SetEnv
1.49 markus 245: .It ServerAliveInterval
246: .It ServerAliveCountMax
1.46 jmc 247: .It StrictHostKeyChecking
1.48 markus 248: .It TCPKeepAlive
1.100 djm 249: .It UpdateHostKeys
1.46 jmc 250: .It UsePrivilegedPort
251: .It User
252: .It UserKnownHostsFile
253: .It VerifyHostKeyDNS
254: .El
1.72 djm 255: .It Fl P Ar port
256: Specifies the port to connect to on the remote host.
1.74 djm 257: .It Fl p
258: Preserves modification times, access times, and modes from the
259: original files transferred.
1.70 djm 260: .It Fl q
261: Quiet mode: disables the progress meter as well as warning and
262: diagnostic messages from
263: .Xr ssh 1 .
1.30 djm 264: .It Fl R Ar num_requests
1.44 jmc 265: Specify how many requests may be outstanding at any one time.
266: Increasing this may slightly improve file transfer speed
267: but will increase memory usage.
1.67 djm 268: The default is 64 outstanding requests.
1.74 djm 269: .It Fl r
270: Recursively copy entire directories when uploading and downloading.
271: Note that
272: .Nm
273: does not follow symbolic links encountered in the tree traversal.
1.26 stevesk 274: .It Fl S Ar program
275: Name of the
276: .Ar program
277: to use for the encrypted connection.
278: The program must understand
279: .Xr ssh 1
280: options.
1.46 jmc 281: .It Fl s Ar subsystem | sftp_server
282: Specifies the SSH2 subsystem or the path for an sftp server
283: on the remote host.
1.109 jmc 284: A path is useful when the remote
1.46 jmc 285: .Xr sshd 8
286: does not have an sftp subsystem configured.
287: .It Fl v
288: Raise logging level.
289: This option is also passed to ssh.
1.1 djm 290: .El
291: .Sh INTERACTIVE COMMANDS
1.2 djm 292: Once in interactive mode,
293: .Nm
1.21 itojun 294: understands a set of commands similar to those of
1.1 djm 295: .Xr ftp 1 .
1.60 jaredy 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
299: .Xr glob 3
300: must be escaped with backslashes
301: .Pq Sq \e .
302: .Bl -tag -width Ds
1.22 markus 303: .It Ic bye
1.44 jmc 304: Quit
305: .Nm sftp .
1.113 djm 306: .It Ic cd Op Ar path
1.21 itojun 307: Change remote directory to
1.3 deraadt 308: .Ar path .
1.113 djm 309: If
310: .Ar path
311: is not specified, then change directory to the one the session started in.
1.3 deraadt 312: .It Ic chgrp Ar grp Ar path
1.21 itojun 313: Change group of file
1.5 stevesk 314: .Ar path
315: to
1.1 djm 316: .Ar grp .
1.60 jaredy 317: .Ar path
318: may contain
319: .Xr glob 3
320: characters and may match multiple files.
1.1 djm 321: .Ar grp
1.5 stevesk 322: must be a numeric GID.
1.3 deraadt 323: .It Ic chmod Ar mode Ar path
1.21 itojun 324: Change permissions of file
1.5 stevesk 325: .Ar path
326: to
1.3 deraadt 327: .Ar mode .
1.60 jaredy 328: .Ar path
329: may contain
330: .Xr glob 3
331: characters and may match multiple files.
1.3 deraadt 332: .It Ic chown Ar own Ar path
1.21 itojun 333: Change owner of file
1.5 stevesk 334: .Ar path
335: to
1.1 djm 336: .Ar own .
1.60 jaredy 337: .Ar path
338: may contain
339: .Xr glob 3
340: characters and may match multiple files.
1.1 djm 341: .Ar own
342: must be a numeric UID.
1.65 djm 343: .It Xo Ic df
344: .Op Fl hi
345: .Op Ar path
346: .Xc
347: Display usage information for the filesystem holding the current directory
348: (or
349: .Ar path
350: if specified).
351: If the
352: .Fl h
353: flag is specified, the capacity information will be displayed using
354: "human-readable" suffixes.
355: The
356: .Fl i
357: flag requests display of inode information in addition to capacity information.
358: This command is only supported on servers that implement the
359: .Dq statvfs@openssh.com
360: extension.
1.11 deraadt 361: .It Ic exit
1.44 jmc 362: Quit
363: .Nm sftp .
1.7 djm 364: .It Xo Ic get
1.95 djm 365: .Op Fl afPpr
1.7 djm 366: .Ar remote-path
367: .Op Ar local-path
368: .Xc
1.1 djm 369: Retrieve the
1.5 stevesk 370: .Ar remote-path
1.1 djm 371: and store it on the local machine.
372: If the local
1.21 itojun 373: path name is not specified, it is given the same name it has on the
1.44 jmc 374: remote machine.
1.60 jaredy 375: .Ar remote-path
376: may contain
377: .Xr glob 3
378: characters and may match multiple files.
379: If it does and
380: .Ar local-path
381: is specified, then
382: .Ar local-path
383: must specify a directory.
1.74 djm 384: .Pp
1.92 djm 385: If the
386: .Fl a
387: flag is specified, then attempt to resume partial transfers of existing files.
388: Note that resumption assumes that any partial copy of the local file matches
389: the remote copy.
1.93 djm 390: If the remote file contents differ from the partial local copy then the
391: resultant file is likely to be corrupt.
1.92 djm 392: .Pp
1.95 djm 393: If the
394: .Fl f
395: flag is specified, then
396: .Xr fsync 2
1.96 jmc 397: will be called after the file transfer has completed to flush the file
1.95 djm 398: to disk.
399: .Pp
1.76 jmc 400: If either the
1.75 djm 401: .Fl P
1.74 djm 402: or
403: .Fl p
1.60 jaredy 404: flag is specified, then full file permissions and access times are
1.7 djm 405: copied too.
1.74 djm 406: .Pp
407: If the
408: .Fl r
409: flag is specified then directories will be copied recursively.
410: Note that
411: .Nm
412: does not follow symbolic links when performing recursive transfers.
1.11 deraadt 413: .It Ic help
414: Display help text.
1.113 djm 415: .It Ic lcd Op Ar path
1.46 jmc 416: Change local directory to
417: .Ar path .
1.113 djm 418: If
419: .Ar path
420: is not specified, then change directory to the local user's home directory.
1.3 deraadt 421: .It Ic lls Op Ar ls-options Op Ar path
1.21 itojun 422: Display local directory listing of either
1.1 djm 423: .Ar path
424: or current directory if
425: .Ar path
1.5 stevesk 426: is not specified.
1.60 jaredy 427: .Ar ls-options
428: may contain any flags supported by the local system's
429: .Xr ls 1
430: command.
431: .Ar path
432: may contain
433: .Xr glob 3
434: characters and may match multiple files.
1.3 deraadt 435: .It Ic lmkdir Ar path
1.1 djm 436: Create local directory specified by
1.3 deraadt 437: .Ar path .
1.88 djm 438: .It Xo Ic ln
439: .Op Fl s
440: .Ar oldpath
441: .Ar newpath
442: .Xc
443: Create a link from
1.12 djm 444: .Ar oldpath
445: to
446: .Ar newpath .
1.88 djm 447: If the
448: .Fl s
449: flag is specified the created link is a symbolic link, otherwise it is
450: a hard link.
1.3 deraadt 451: .It Ic lpwd
452: Print local working directory.
1.36 djm 453: .It Xo Ic ls
1.82 jmc 454: .Op Fl 1afhlnrSt
1.36 djm 455: .Op Ar path
456: .Xc
1.60 jaredy 457: Display a remote directory listing of either
1.1 djm 458: .Ar path
1.60 jaredy 459: or the current directory if
1.5 stevesk 460: .Ar path
1.44 jmc 461: is not specified.
1.60 jaredy 462: .Ar path
463: may contain
464: .Xr glob 3
465: characters and may match multiple files.
466: .Pp
467: The following flags are recognized and alter the behaviour of
468: .Ic ls
469: accordingly:
470: .Bl -tag -width Ds
471: .It Fl 1
472: Produce single columnar output.
473: .It Fl a
474: List files beginning with a dot
475: .Pq Sq \&. .
476: .It Fl f
477: Do not sort the listing.
478: The default sort order is lexicographical.
1.81 djm 479: .It Fl h
480: When used with a long format option, use unit suffixes: Byte, Kilobyte,
481: Megabyte, Gigabyte, Terabyte, Petabyte, and Exabyte in order to reduce
482: the number of digits to four or fewer using powers of 2 for sizes (K=1024,
483: M=1048576, etc.).
1.82 jmc 484: .It Fl l
485: Display additional details including permissions
486: and ownership information.
1.60 jaredy 487: .It Fl n
488: Produce a long listing with user and group information presented
1.56 djm 489: numerically.
1.60 jaredy 490: .It Fl r
491: Reverse the sort order of the listing.
492: .It Fl S
493: Sort the listing by file size.
494: .It Fl t
495: Sort the listing by last modification time.
496: .El
1.3 deraadt 497: .It Ic lumask Ar umask
1.21 itojun 498: Set local umask to
1.3 deraadt 499: .Ar umask .
500: .It Ic mkdir Ar path
1.1 djm 501: Create remote directory specified by
1.3 deraadt 502: .Ar path .
1.40 fgsch 503: .It Ic progress
504: Toggle display of progress meter.
1.7 djm 505: .It Xo Ic put
1.98 logan 506: .Op Fl afPpr
1.7 djm 507: .Ar local-path
1.37 djm 508: .Op Ar remote-path
1.7 djm 509: .Xc
1.1 djm 510: Upload
1.5 stevesk 511: .Ar local-path
1.44 jmc 512: and store it on the remote machine.
513: If the remote path name is not specified, it is given the same name it has
514: on the local machine.
1.60 jaredy 515: .Ar local-path
516: may contain
517: .Xr glob 3
518: characters and may match multiple files.
519: If it does and
520: .Ar remote-path
521: is specified, then
522: .Ar remote-path
523: must specify a directory.
1.95 djm 524: .Pp
525: If the
1.99 jmc 526: .Fl a
1.98 logan 527: flag is specified, then attempt to resume partial
528: transfers of existing files.
1.99 jmc 529: Note that resumption assumes that any partial copy of the remote file
1.98 logan 530: matches the local copy.
531: If the local file contents differ from the remote local copy then
532: the resultant file is likely to be corrupt.
533: .Pp
534: If the
1.95 djm 535: .Fl f
536: flag is specified, then a request will be sent to the server to call
537: .Xr fsync 2
538: after the file has been transferred.
539: Note that this is only supported by servers that implement
540: the "fsync@openssh.com" extension.
1.74 djm 541: .Pp
1.90 dtucker 542: If either the
1.7 djm 543: .Fl P
1.74 djm 544: or
545: .Fl p
546: flag is specified, then full file permissions and access times are
1.7 djm 547: copied too.
1.74 djm 548: .Pp
549: If the
550: .Fl r
551: flag is specified then directories will be copied recursively.
552: Note that
553: .Nm
554: does not follow symbolic links when performing recursive transfers.
1.3 deraadt 555: .It Ic pwd
556: Display remote working directory.
557: .It Ic quit
1.44 jmc 558: Quit
559: .Nm sftp .
1.92 djm 560: .It Xo Ic reget
561: .Op Fl Ppr
562: .Ar remote-path
563: .Op Ar local-path
564: .Xc
565: Resume download of
566: .Ar remote-path .
567: Equivalent to
568: .Ic get
569: with the
1.98 logan 570: .Fl a
571: flag set.
572: .It Xo Ic reput
573: .Op Fl Ppr
574: .Op Ar local-path
575: .Ar remote-path
576: .Xc
577: Resume upload of
578: .Op Ar local-path .
579: Equivalent to
580: .Ic put
1.99 jmc 581: with the
1.92 djm 582: .Fl a
583: flag set.
1.3 deraadt 584: .It Ic rename Ar oldpath Ar newpath
1.1 djm 585: Rename remote file from
586: .Ar oldpath
587: to
1.3 deraadt 588: .Ar newpath .
1.46 jmc 589: .It Ic rm Ar path
590: Delete remote file specified by
591: .Ar path .
1.3 deraadt 592: .It Ic rmdir Ar path
1.1 djm 593: Remove remote directory specified by
1.3 deraadt 594: .Ar path .
1.12 djm 595: .It Ic symlink Ar oldpath Ar newpath
1.21 itojun 596: Create a symbolic link from
1.12 djm 597: .Ar oldpath
598: to
599: .Ar newpath .
1.38 fgsch 600: .It Ic version
601: Display the
602: .Nm
603: protocol version.
1.69 sobrado 604: .It Ic \&! Ns Ar command
1.21 itojun 605: Execute
1.1 djm 606: .Ar command
1.3 deraadt 607: in local shell.
1.45 jmc 608: .It Ic \&!
1.3 deraadt 609: Escape to local shell.
1.45 jmc 610: .It Ic \&?
1.5 stevesk 611: Synonym for help.
1.4 itojun 612: .El
1.1 djm 613: .Sh SEE ALSO
1.46 jmc 614: .Xr ftp 1 ,
1.60 jaredy 615: .Xr ls 1 ,
1.17 markus 616: .Xr scp 1 ,
1.1 djm 617: .Xr ssh 1 ,
618: .Xr ssh-add 1 ,
619: .Xr ssh-keygen 1 ,
1.60 jaredy 620: .Xr glob 3 ,
1.35 stevesk 621: .Xr ssh_config 5 ,
1.17 markus 622: .Xr sftp-server 8 ,
623: .Xr sshd 8
624: .Rs
1.20 deraadt 625: .%A T. Ylonen
626: .%A S. Lehtinen
1.17 markus 627: .%T "SSH File Transfer Protocol"
628: .%N draft-ietf-secsh-filexfer-00.txt
629: .%D January 2001
630: .%O work in progress material
631: .Re