SFTP
Section: User Commands (1)
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NAME
sftp
- secure file transfer program
SYNOPSIS
sftp
-words
[-1Cv [-B buffer_size
]
]
[-b batchfile
]
[-F ssh_config
]
[-o ssh_option
]
[-P sftp_server_path
]
[-R num_requests
]
[-S program
]
[-s subsystem | sftp_server
]
host
sftp
[user @ host [: file ...
]
]
sftp
[user @ host [: dir [/ ]
]
]
sftp
-b batchfile
[user @ host
]
DESCRIPTION
sftp
is an interactive file transfer program, similar to
ftp(1),
which performs all operations over an encrypted
ssh(1)
transport.
It may also use many features of ssh, such as public key authentication and
compression.
sftp
connects and logs into the specified
host
then enters an interactive command mode.
The second usage format will retrieve files automatically if a non-interactive
authentication method is used; otherwise it will do so after
successful interactive authentication.
The third usage format allows
sftp
to start in a remote directory.
The final usage format allows for automated sessions using the
-b
option.
In such cases, it is necessary to configure non-interactive authentication
to obviate the need to enter a password at connection time (see
sshd(8)
and
ssh-keygen1
for details).
The options are as follows:
- -1
-
Specify the use of protocol version 1.
- -B buffer_size
-
Specify the size of the buffer that
sftp
uses when transferring files.
Larger buffers require fewer round trips at the cost of higher
memory consumption.
The default is 32768 bytes.
- -b batchfile
-
Batch mode reads a series of commands from an input
batchfile
instead of
stdin
Since it lacks user interaction it should be used in conjunction with
non-interactive authentication.
A
batchfile
of
`-'
may be used to indicate standard input.
sftp
will abort if any of the following
commands fail:
get , put , rename , ln
rm , mkdir , chdir , ls
lchdir , chmod , chown
chgrp , lpwd , df
and
lmkdir
Termination on error can be suppressed on a command by command basis by
prefixing the command with a
`-'
character (for example,
-rm /tmp/blah* )
- -C
-
Enables compression (via ssh's
-C
flag).
- -F ssh_config
-
Specifies an alternative
per-user configuration file for
ssh(1).
This option is directly passed to
ssh(1).
- -o ssh_option
-
Can be used to pass options to
ssh
in the format used in
ssh_config5.
This is useful for specifying options
for which there is no separate
sftp
command-line flag.
For example, to specify an alternate port use:
sftp -oPort=24
For full details of the options listed below, and their possible values, see
ssh_config5.
- AddressFamily
-
- BatchMode
-
- BindAddress
-
- ChallengeResponseAuthentication
-
- CheckHostIP
-
- Cipher
-
- Ciphers
-
- Compression
-
- CompressionLevel
-
- ConnectionAttempts
-
- ConnectTimeout
-
- ControlMaster
-
- ControlPath
-
- GlobalKnownHostsFile
-
- GSSAPIAuthentication
-
- GSSAPIDelegateCredentials
-
- HashKnownHosts
-
- Host
-
- HostbasedAuthentication
-
- HostKeyAlgorithms
-
- HostKeyAlias
-
- HostName
-
- IdentityFile
-
- IdentitiesOnly
-
- KbdInteractiveDevices
-
- LogLevel
-
- MACs
- NoHostAuthenticationForLocalhost
-
-
- NumberOfPasswordPrompts
-
- PasswordAuthentication
-
- Port
-
- PreferredAuthentications
-
- Protocol
-
- ProxyCommand
-
- PubkeyAuthentication
-
- RekeyLimit
-
- RhostsRSAAuthentication
-
- RSAAuthentication
-
- SendEnv
-
- ServerAliveInterval
-
- ServerAliveCountMax
-
- SmartcardDevice
-
- StrictHostKeyChecking
-
- TCPKeepAlive
-
- UsePrivilegedPort
-
- User
-
- UserKnownHostsFile
-
- VerifyHostKeyDNS
-
- -P sftp_server_path
-
Connect directly to a local sftp server
(rather than via
ssh(1)).
This option may be useful in debugging the client and server.
- -R num_requests
-
Specify how many requests may be outstanding at any one time.
Increasing this may slightly improve file transfer speed
but will increase memory usage.
The default is 64 outstanding requests.
- -S program
-
Name of the
program
to use for the encrypted connection.
The program must understand
ssh(1)
options.
- -s subsystem | sftp_server
-
Specifies the SSH2 subsystem or the path for an sftp server
on the remote host.
A path is useful for using
sftp
over protocol version 1, or when the remote
sshd(8)
does not have an sftp subsystem configured.
- -v
-
Raise logging level.
This option is also passed to ssh.
INTERACTIVE COMMANDS
Once in interactive mode,
sftp
understands a set of commands similar to those of
ftp(1).
Commands are case insensitive.
Pathnames that contain spaces must be enclosed in quotes.
Any special characters contained within pathnames that are recognized by
glob(3)
must be escaped with backslashes
(`\'
)
- bye
-
Quit
sftp
- cd path
-
Change remote directory to
path
- chgrp grp path
-
Change group of file
path
to
grp
path
may contain
glob(3)
characters and may match multiple files.
grp
must be a numeric GID.
- chmod mode path
-
Change permissions of file
path
to
mode
path
may contain
glob(3)
characters and may match multiple files.
- chown own path
-
Change owner of file
path
to
own
path
may contain
glob(3)
characters and may match multiple files.
own
must be a numeric UID.
-
df
[-hi
]
[path
]
-
- Display usage information for the filesystem holding the current directory
(or
path
if specified).
If the
-h
flag is specified, the capacity information will be displayed using
"human-readable" suffixes.
The
-i
flag requests display of inode information in addition to capacity information.
This command is only supported on servers that implement the
``statvfs@openssh.com''
extension.
- exit
-
Quit
sftp
-
get
[-P
]
remote-path
[local-path
]
-
- Retrieve the
remote-path
and store it on the local machine.
If the local
path name is not specified, it is given the same name it has on the
remote machine.
remote-path
may contain
glob(3)
characters and may match multiple files.
If it does and
local-path
is specified, then
local-path
must specify a directory.
If the
-P
flag is specified, then full file permissions and access times are
copied too.
- help
-
Display help text.
- lcd path
-
Change local directory to
path
- lls [ls-options [path
]
]
-
Display local directory listing of either
path
or current directory if
path
is not specified.
ls-options
may contain any flags supported by the local system's
ls(1)
command.
path
may contain
glob(3)
characters and may match multiple files.
- lmkdir path
-
Create local directory specified by
path
- ln oldpath newpath
-
Create a symbolic link from
oldpath
to
newpath
- lpwd
-
Print local working directory.
-
ls
[-1aflnrSt [path
]
]
-
- Display a remote directory listing of either
path
or the current directory if
path
is not specified.
path
may contain
glob(3)
characters and may match multiple files.
The following flags are recognized and alter the behaviour of
ls
accordingly:
- -1
-
Produce single columnar output.
- -a
-
List files beginning with a dot
(`.'
)
- -f
-
Do not sort the listing.
The default sort order is lexicographical.
- -l
-
Display additional details including permissions
and ownership information.
- -n
-
Produce a long listing with user and group information presented
numerically.
- -r
-
Reverse the sort order of the listing.
- -S
-
Sort the listing by file size.
- -t
-
Sort the listing by last modification time.
- lumask umask
-
Set local umask to
umask
- mkdir path
-
Create remote directory specified by
path
- progress
-
Toggle display of progress meter.
-
put
[-P
]
local-path
[remote-path
]
-
- Upload
local-path
and store it on the remote machine.
If the remote path name is not specified, it is given the same name it has
on the local machine.
local-path
may contain
glob(3)
characters and may match multiple files.
If it does and
remote-path
is specified, then
remote-path
must specify a directory.
If the
-P
flag is specified, then the file's full permission and access time are
copied too.
- pwd
-
Display remote working directory.
- quit
-
Quit
sftp
- rename oldpath newpath
-
Rename remote file from
oldpath
to
newpath
- rm path
-
Delete remote file specified by
path
- rmdir path
-
Remove remote directory specified by
path
- symlink oldpath newpath
-
Create a symbolic link from
oldpath
to
newpath
- version
-
Display the
sftp
protocol version.
- ! command
-
Execute
command
in local shell.
- !
-
Escape to local shell.
- ?
-
Synonym for help.
SEE ALSO
ftp(1),
ls(1),
scp(1),
ssh(1),
ssh-add1,
ssh-keygen1,
glob(3),
ssh_config5,
sftp-server8,
sshd(8)
-
T. Ylonen
S. Lehtinen
"SSH File Transfer Protocol"
draft-ietf-secsh-filexfer-00.txt
January 2001
work in progress material