NAME

scp — secure copy (remote file copy program)

SYNOPSIS

scp	[-12346BCpqrv] [-c cipher] [-F ssh_config] [-i identity_file] [-l limit] [-o ssh_option] [-P port] [-S program] [[user@]host1:]file1 ... [[user@]host2:]file2

DESCRIPTION

scp copies files between hosts on a network. It uses ssh(1) for data transfer, and uses the same authentication and provides the same security as ssh(1). Unlike rcp(1), scp will ask for passwords or passphrases if they are needed for authentication.

File names may contain a user and host specification to indicate that the file is to be copied to/from that host. Local file names can be made explicit using absolute or relative pathnames to avoid scp treating file names containing ‘:' as host specifiers. Copies between two remote hosts are also permitted.

The options are as follows:

-1

Forces scp to use protocol 1.

-2

Forces scp to use protocol 2.

-3

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.

-4

Forces scp to use IPv4 addresses only.

-6

Forces scp to use IPv6 addresses only.

-B

Selects batch mode (prevents asking for passwords or passphrases).

-C

Compression enable. Passes the -C flag to ssh(1) to enable compression.

-c cipher

Selects the cipher to use for encrypting the data transfer. This option is directly passed to ssh(1).

-F ssh_config

Specifies an alternative per-user configuration file for ssh. This option is directly passed to ssh(1).

-i identity_file

Selects the file from which the identity (private key) for public key authentication is read. This option is directly passed to ssh(1).

-l limit

Limits the used bandwidth, specified in Kbit/s.

-o ssh_option

Can be used to pass options to ssh in the format used in ssh_config(5). This is useful for specifying options for which there is no separate scp command-line flag. For full details of the options listed below, and their possible values, see ssh_config(5).

AddressFamily

BatchMode

BindAddress

ChallengeResponseAuthentication

CheckHostIP

Cipher

Ciphers

Compression

CompressionLevel

ConnectionAttempts

ConnectTimeout

ControlMaster

ControlPath

GlobalKnownHostsFile

GSSAPIAuthentication

GSSAPIDelegateCredentials

HashKnownHosts

Host

HostbasedAuthentication

HostKeyAlgorithms

HostKeyAlias

HostName

IdentityFile

IdentitiesOnly

IPQoS

KbdInteractiveDevices

KexAlgorithms

LogLevel

MACs

NoHostAuthenticationForLocalhost

NumberOfPasswordPrompts

PasswordAuthentication

PKCS11Provider

Port

PreferredAuthentications

Protocol

ProxyCommand

PubkeyAuthentication

RekeyLimit

RhostsRSAAuthentication

RSAAuthentication

SendEnv

ServerAliveInterval

ServerAliveCountMax

StrictHostKeyChecking

TCPKeepAlive

UsePrivilegedPort

User

UserKnownHostsFile

VerifyHostKeyDNS

-P port

Specifies the port to connect to on the remote host. Note that this option is written with a capital ‘P', because -p is already reserved for preserving the times and modes of the file in rcp(1).

-p

Preserves modification times, access times, and modes from the original file.

-q

Quiet mode: disables the progress meter as well as warning and diagnostic messages from ssh(1).

-r

Recursively copy entire directories. Note that scp follows symbolic links encountered in the tree traversal.

-S program

Name of program to use for the encrypted connection. The program must understand ssh(1) options.

-v

Verbose mode. Causes scp and ssh(1) to print debugging messages about their progress. This is helpful in debugging connection, authentication, and configuration problems.

EXIT STATUS

The scp utility exits 0 on success, and >0 if an error occurs.

SEE ALSO

rcp(1), sftp(1), ssh(1), ssh-add(1), ssh-agent(1), ssh-keygen(1), ssh_config(5), sshd(8)

HISTORY

scp is based on the rcp(1) program in BSD source code from the Regents of the University of California.

AUTHORS

Timo Rinne <tri@iki.fi> Tatu Ylonen <ylo@cs.hut.fi>