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Linux in a Nutshell

This directory of Linux commands is from Linux in a Nutshell, 5th Edition.

Click on any of the 687 commands below to get a description and list of available options. All links in the command summaries point to the online version of the book on Safari Bookshelf.

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scp

scp [options] file1[...] file2

Securely copy files between hosts on a network, using ssh. Part of the OpenSSH suite of network tools. scp requests a password or passphrase if required. The transfer can be between two remote hosts. If more than one file is specified for file1, file2 should be a directory; otherwise, only the last file in the list is copied. file1 and file2 can be specified in any of the following ways:

file host:file user@host:file

The first format is used for a local file; a remote file can be specified in either of the other two formats.

Options

-1

Force the use of SSH protocol 1.

-2

Force the use of SSH protocol 2

-4

Use IPv4 addresses.

-6

Use IPv6 addresses.

-B

Run in batch mode. Don't ask for passwords or passphrases.

-c cipher

Specify the cipher to be used for encrypting the data.

-C

Enable ssh compression.

-F config

Specify an ssh user configuration file (default is $HOME/.ssh/config).

-i file

Specify the file that contains the identity (private key) for RSA authentication.

-l limit

Limit bandwidth used to limit, specified in kilobits/second.

-o option

Specify an option to pass to ssh.

-p

Preserve modification time, access time, and mode.

-P port

Connect to port on the remote host.

-q

Don't display the progress meter.

-r

Copy directories recursively.

-S program

Specify the program to use for the encrypted connection. The program must understand ssh options.

-v

Verbose mode.

Example

Copy the local file user.server1.pub to the remote system server2, putting it in james's home directory:

$ scp user.server1.pub james@server2:/home/james/