323 lines
7.7 KiB
Groff
323 lines
7.7 KiB
Groff
.\" $OpenBSD: sftp.1,v 1.45 2003/09/02 18:50:06 jmc Exp $
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.\"
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.\" Copyright (c) 2001 Damien Miller. All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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.\"
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.Dd February 4, 2001
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.Dt SFTP 1
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.Os
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.Sh NAME
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.Nm sftp
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.Nd secure file transfer program
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.Sh SYNOPSIS
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.Nm sftp
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.Bk -words
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.Op Fl vC1
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.Op Fl b Ar batchfile
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.Op Fl o Ar ssh_option
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.Op Fl s Ar subsystem | sftp_server
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.Op Fl B Ar buffer_size
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.Op Fl F Ar ssh_config
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.Op Fl P Ar sftp_server path
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.Op Fl R Ar num_requests
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.Op Fl S Ar program
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.Ar host
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.Ek
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.Nm sftp
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.Oo Oo Ar user Ns @ Oc Ns
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.Ar host Ns Oo : Ns Ar file Oo
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.Ar file Oc Oc Oc
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.Nm sftp
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.Oo Oo Ar user Ns @ Oc Ns
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.Ar host Ns Oo : Ns Ar dir Ns
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.Oo Ar / Oc Oc Oc
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.Nm sftp
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.Fl b Ar batchfile
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.Oo Ar user Ns @ Oc Ns Ar host
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.Sh DESCRIPTION
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.Nm
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is an interactive file transfer program, similar to
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.Xr ftp 1 ,
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which performs all operations over an encrypted
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.Xr ssh 1
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transport.
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It may also use many features of ssh, such as public key authentication and
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compression.
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.Nm
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connects and logs into the specified
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.Ar host ,
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then enters an interactive command mode.
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.Pp
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The second usage format will retrieve files automatically if a non-interactive
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authentication method is used; otherwise it will do so after
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successful interactive authentication.
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.Pp
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The third usage format allows the sftp client to start in a remote directory.
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.Pp
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The final usage format allows for automated sessions using the
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.Fl b
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option.
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In such cases, it is usually necessary to configure public key authentication
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to obviate the need to enter a password at connection time (see
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.Xr sshd 8
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and
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.Xr ssh-keygen 1
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for details).
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The options are as follows:
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.Bl -tag -width Ds
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.It Fl b Ar batchfile
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Batch mode reads a series of commands from an input
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.Ar batchfile
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instead of
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.Em stdin .
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Since it lacks user interaction it should be used in conjunction with
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non-interactive authentication.
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.Nm
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will abort if any of the following
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commands fail:
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.Ic get , put , rename , ln ,
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.Ic rm , mkdir , chdir , ls ,
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.Ic lchdir , chmod , chown , chgrp , lpwd
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and
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.Ic lmkdir .
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Termination on error can be suppressed on a command by command basis by
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prefixing the command with a
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.Sq Ic \-
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character (for example,
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.Ic -rm /tmp/blah* ) .
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.It Fl o Ar ssh_option
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Can be used to pass options to
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.Nm ssh
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in the format used in
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.Xr ssh_config 5 .
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This is useful for specifying options
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for which there is no separate
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.Nm sftp
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command-line flag.
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For example, to specify an alternate port use:
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.Ic sftp -oPort=24 .
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.It Fl s Ar subsystem | sftp_server
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Specifies the SSH2 subsystem or the path for an sftp server
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on the remote host.
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A path is useful for using
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.Nm
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over protocol version 1, or when the remote
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.Xr sshd 8
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does not have an sftp subsystem configured.
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.It Fl v
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Raise logging level.
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This option is also passed to ssh.
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.It Fl B Ar buffer_size
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Specify the size of the buffer that
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.Nm
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uses when transferring files.
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Larger buffers require fewer round trips at the cost of higher
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memory consumption.
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The default is 32768 bytes.
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.It Fl C
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Enables compression (via ssh's
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.Fl C
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flag).
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.It Fl F Ar ssh_config
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Specifies an alternative
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per-user configuration file for
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.Xr ssh 1 .
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This option is directly passed to
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.Xr ssh 1 .
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.It Fl P Ar sftp_server path
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Connect directly to a local sftp server
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(rather than via
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.Xr ssh 1 )
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This option may be useful in debugging the client and server.
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.It Fl R Ar num_requests
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Specify how many requests may be outstanding at any one time.
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Increasing this may slightly improve file transfer speed
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but will increase memory usage.
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The default is 16 outstanding requests.
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.It Fl S Ar program
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Name of the
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.Ar program
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to use for the encrypted connection.
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The program must understand
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.Xr ssh 1
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options.
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.It Fl 1
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Specify the use of protocol version 1.
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.El
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.Sh INTERACTIVE COMMANDS
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Once in interactive mode,
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.Nm
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understands a set of commands similar to those of
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.Xr ftp 1 .
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Commands are case insensitive and pathnames may be enclosed in quotes if they
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contain spaces.
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.Bl -tag -width Ds
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.It Ic bye
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Quit
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.Nm sftp .
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.It Ic cd Ar path
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Change remote directory to
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.Ar path .
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.It Ic lcd Ar path
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Change local directory to
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.Ar path .
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.It Ic chgrp Ar grp Ar path
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Change group of file
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.Ar path
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to
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.Ar grp .
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.Ar grp
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must be a numeric GID.
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.It Ic chmod Ar mode Ar path
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Change permissions of file
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.Ar path
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to
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.Ar mode .
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.It Ic chown Ar own Ar path
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Change owner of file
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.Ar path
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to
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.Ar own .
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.Ar own
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must be a numeric UID.
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.It Ic exit
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Quit
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.Nm sftp .
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.It Xo Ic get
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.Op Ar flags
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.Ar remote-path
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.Op Ar local-path
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.Xc
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Retrieve the
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.Ar remote-path
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and store it on the local machine.
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If the local
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path name is not specified, it is given the same name it has on the
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remote machine.
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If the
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.Fl P
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flag is specified, then the file's full permission and access time are
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copied too.
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.It Ic help
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Display help text.
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.It Ic lls Op Ar ls-options Op Ar path
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Display local directory listing of either
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.Ar path
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or current directory if
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.Ar path
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is not specified.
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.It Ic lmkdir Ar path
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Create local directory specified by
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.Ar path .
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.It Ic ln Ar oldpath Ar newpath
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Create a symbolic link from
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.Ar oldpath
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to
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.Ar newpath .
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.It Ic lpwd
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Print local working directory.
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.It Xo Ic ls
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.Op Ar flags
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.Op Ar path
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.Xc
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Display remote directory listing of either
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.Ar path
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or current directory if
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.Ar path
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is not specified.
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If the
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.Fl l
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flag is specified, then display additional details including permissions
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and ownership information.
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.It Ic lumask Ar umask
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Set local umask to
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.Ar umask .
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.It Ic mkdir Ar path
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Create remote directory specified by
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.Ar path .
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.It Ic progress
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Toggle display of progress meter.
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.It Xo Ic put
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.Op Ar flags
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.Ar local-path
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.Op Ar remote-path
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.Xc
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Upload
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.Ar local-path
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and store it on the remote machine.
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If the remote path name is not specified, it is given the same name it has
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on the local machine.
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If the
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.Fl P
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flag is specified, then the file's full permission and access time are
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copied too.
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.It Ic pwd
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Display remote working directory.
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.It Ic quit
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Quit
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.Nm sftp .
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.It Ic rename Ar oldpath Ar newpath
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Rename remote file from
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.Ar oldpath
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to
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.Ar newpath .
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.It Ic rmdir Ar path
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Remove remote directory specified by
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.Ar path .
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.It Ic rm Ar path
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Delete remote file specified by
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.Ar path .
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.It Ic symlink Ar oldpath Ar newpath
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Create a symbolic link from
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.Ar oldpath
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to
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.Ar newpath .
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.It Ic version
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Display the
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.Nm
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protocol version.
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.It Ic \&! Ar command
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Execute
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.Ar command
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in local shell.
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.It Ic \&!
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Escape to local shell.
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.It Ic \&?
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Synonym for help.
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.El
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.Sh SEE ALSO
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.Xr scp 1 ,
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.Xr ssh 1 ,
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.Xr ssh-add 1 ,
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.Xr ssh-keygen 1 ,
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.Xr ssh_config 5 ,
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.Xr sftp-server 8 ,
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.Xr sshd 8
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.Rs
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.%A T. Ylonen
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.%A S. Lehtinen
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.%T "SSH File Transfer Protocol"
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.%N draft-ietf-secsh-filexfer-00.txt
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.%D January 2001
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.%O work in progress material
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.Re
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