A detailed explanation of SCP command

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scp

The file is copied between the local host and the remote host by encryption

Additional explanation

scp command Used in Linux Under the command to copy files remotely , Similar orders are cp, however cp It's just that copying on the local machine can't cross servers , and scp The transmission is encrypted . It may affect the speed a little . When your server hard disk becomes read-only read only system when , use scp I can help you move the files out . in addition ,scp It doesn't take up resources , It will not increase the system load much , At this point ,rsync It's far less than that . although rsync Than scp It will be faster , But when there are lots of small files ,rsync It will cause the hard disk I/O Very high , and scp Basically does not affect the normal use of the system .

grammar

scp( Options )( Parameters )

Copy

Options

-1： Use ssh Protocol version 1;
-2： Use ssh Protocol version 2;
-4： Use ipv4;
-6： Use ipv6;
-B： Run in batch mode ;
-C： Use compression ;
-F： Appoint ssh The configuration file ;
-i：identity_file  The key file used to read the transfer from the specified file （ For example, Amazon cloud pem）, This parameter is passed directly to ssh;
-l： Specify broadband restrictions ;
-o： Designated to use ssh Options ;
-P： Specify the port number of the remote host ;
-p： Last modification time of reserved file , Last access time and permission mode ;
-q： Don't show replication progress ;
-r： Copy... Recursively .

Copy

Parameters

• Source file ： Specify the source file to copy .
• Target file ： Target file . The format is [email protected]：filename（ The file name is the name of the target file ）.

example

From remote replication to local scp The order is the same as the one above , Just copy the local command to the remote command 2 One parameter exchange order is enough .

Copy files from a remote machine to a local directory

scp [email protected]:/opt/soft/nginx-0.5.38.tar.gz /opt/soft/

Copy

from 10.10.10.10 On the machine /opt/soft/ Download... From the directory nginx-0.5.38.tar.gz File to local /opt/soft/ Directory .

Copy from Amazon cloud OpenV** Go to the local directory

scp -i amazon.pem [email protected]:/usr/local/openvpn_as/etc/exe/openvpn-connect-2.1.3.110.dmg openvpn-connect-2.1.3.110.dmg

Copy

from 10.10.10.10 Download from the machine openvpn Install files to the current local directory .

Copy from remote machine to local machine

scp -r [email protected]:/opt/soft/mongodb /opt/soft/

Copy

from 10.10.10.10 On the machine /opt/soft/ Download mongodb Directory to local /opt/soft/ Catalog to .

Upload the local file to the specified directory of the remote machine

scp /opt/soft/nginx-0.5.38.tar.gz [email protected]:/opt/soft/scptest
#  Designated port  2222
scp -rp -P 2222 /opt/soft/nginx-0.5.38.tar.gz [email protected]:/opt/soft/scptest

Copy

Copy local /opt/soft/ A file in a directory nginx-0.5.38.tar.gz To a remote machine 10.10.10.10 Of opt/soft/scptest Catalog .

Upload the local directory to the specified directory of the remote machine

scp -r /opt/soft/mongodb [email protected]:/opt/soft/scptest

Copy

Upload local directory /opt/soft/mongodb To a remote machine 10.10.10.10 On /opt/soft/scptest Go to the directory of .

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