scp

scp用于网络间两个主机之间文件的安全传输。

参考文献：

   scp — secure copy (remote file copy program)

SYNOPSIS
     scp [-1246BCpqrv] [-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.

     When copying a source file to a target file which already exists, scp
     will replace the contents of the target file (keeping the inode).

     If the target file does not yet exist, an empty file with the target file
     name is created, then filled with the source file contents.  No attempt
     is made at "near-atomic" transfer using temporary files.