./nfo/linux/scp.syntax.nfo

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Example syntax for Secure Copy (scp)
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What is Secure Copy?

scp allows files to be copied to, from, or between different hosts. It 
uses ssh for data transfer and provides the same authentication and same 
level of security as ssh.

Examples

Copy the file "foobar.txt" from a remote host to the local host

    $ scp your_username@remotehost.edu:foobar.txt /some/local/directory 

Copy the file "foobar.txt" from the local host to a remote host

    $ scp foobar.txt your_username@remotehost.edu:/some/remote/directory 

Copy the directory "foo" from the local host to a remote host's 
directory "bar"

    $ scp -r foo your_username@remotehost.edu:/some/remote/directory/bar 

Copy the file "foobar.txt" from remote host "rh1.edu" to remote host "rh2.edu"

    $ scp your_username@rh1.edu:/some/remote/directory/foobar.txt \
    your_username@rh2.edu:/some/remote/directory/ 

Copying the files "foo.txt" and "bar.txt" from the local host to your 
home directory on the remote host

    $ scp foo.txt bar.txt your_username@remotehost.edu:~ 

Copy the file "foobar.txt" from the local host to a remote host using 
port 2264

    $ scp -P 2264 foobar.txt \
    your_username@remotehost.edu:/some/remote/directory

Copy multiple files from the remote host to your current directory on 
the local host

    $ scp your_username@remotehost.edu:/some/remote/directory/\{a,b,c\} . 

    $ scp your_username@remotehost.edu:~/\{foo.txt,bar.txt\} . 

scp Performance

By default scp uses the Triple-DES cipher to encrypt the data being 
sent. Using the Blowfish cipher has been shown to increase speed. This 
can be done by using option -c blowfish in the command line.

    $ scp -c blowfish some_file your_username@remotehost.edu:~ 

It is often suggested that the -C option for compression should also be 
used to increase speed. The effect of compression, however, will only 
significantly increase speed if your connection is very slow. Otherwise 
it may just be adding extra burden to the CPU. An example of using 
blowfish and compression:

    $ scp -c blowfish -C local_file your_username@remotehost.edu:~ 

EOF