OpenSSH secure file copy
scp copies files between hosts on a
It uses ssh(1) for data transfer, and uses the same authentication and provides the same security as a login session. The scp protocol requires execution of the remote user's shell to perform glob(3) pattern matching.
scp will ask for passwords or passphrases
if they are needed for authentication.
The source and target
may be specified as a local pathname, a remote host with optional path in
the form [user@]host:[path], or a URI in the form
scp://[user@]host[:port][/path]. Local file names
can be made explicit using absolute or relative pathnames to avoid
scp treating file names containing ‘:’
as host specifiers.
When copying between two remote hosts, if the URI format is used,
a port may only be specified on the
target if the
-3 option is
The options are as follows:
- Copies between two remote hosts are transferred through the local host.
Without this option the data is copied directly between the two remote
hosts. Note that this option disables the progress meter and selects batch
mode for the second host, since
scpcannot ask for passwords or passphrases for both hosts.
scpto use IPv4 addresses only.
scpto use IPv6 addresses only.
- Allows forwarding of ssh-agent(1) to the remote system. The default is not to forward an authentication agent.
- Selects batch mode (prevents asking for passwords or passphrases).
- Compression enable. Passes the
-Cflag to ssh(1) to enable compression.
- Selects the cipher to use for encrypting the data transfer. This option is directly passed to ssh(1).
- Specifies an alternative per-user configuration file for
ssh. This option is directly passed to ssh(1).
- Selects the file from which the identity (private key) for public key authentication is read. This option is directly passed to ssh(1).
- Connect to the target host by first making an
scpconnection to the jump host described by destination and then establishing a TCP forwarding to the ultimate destination from there. Multiple jump hops may be specified separated by comma characters. This is a shortcut to specify a
ProxyJumpconfiguration directive. This option is directly passed to ssh(1).
- Limits the used bandwidth, specified in Kbit/s.
- Can be used to pass options to
sshin the format used in ssh_config(5). This is useful for specifying options for which there is no separate
scpcommand-line flag. For full details of the options listed below, and their possible values, see ssh_config(5).
- Specifies the port to connect to on the remote host. Note that this option
is written with a capital ‘P’, because
-pis already reserved for preserving the times and modes of the file.
- Preserves modification times, access times, and modes from the original file.
- Quiet mode: disables the progress meter as well as warning and diagnostic messages from ssh(1).
- Recursively copy entire directories. Note that
scpfollows symbolic links encountered in the tree traversal.
- Name of program to use for the encrypted connection. The program must understand ssh(1) options.
- Disable strict filename checking. By default when copying files from a
remote host to a local directory
scpchecks that the received filenames match those requested on the command-line to prevent the remote end from sending unexpected or unwanted files. Because of differences in how various operating systems and shells interpret filename wildcards, these checks may cause wanted files to be rejected. This option disables these checks at the expense of fully trusting that the server will not send unexpected filenames.
- Verbose mode. Causes
scpand ssh(1) to print debugging messages about their progress. This is helpful in debugging connection, authentication, and configuration problems.
scp utility exits 0 on success,
and >0 if an error occurs.
sftp(1), ssh(1), ssh-add(1), ssh-agent(1), ssh-keygen(1), ssh_config(5), sshd(8)
scp is based on the rcp program in
BSD source code from the Regents of the University
Tatu Ylonen <firstname.lastname@example.org>