Using SCP commands to pass files between Linux operating systems

I. On the SCP

SCP is the abbreviation for the English secure copy program , which is used primarily to copy files over the network between two hosts. SCP uses ssh protocol for data transfer, and its authentication method and security are consistent with ssh .

Second, The installation of SSH client

if prompted during use, " -bash:scp:command not found"indicates that the system has not installed the SSH client software and needs to perform yum install openssh-client s command to install

iii. How to use the SCP command

1 ,SCP basic syntax for commands

SCP [Options] [[Email protected]]host1:]file1 ... [[Email Protected]]host2:]file2

2 ,SCP common parameters for commands

-1 enforce SCP Command usage protocol SSH1

-2 enforce SCP Command usage protocol SSH2

-4 forced use of IPV4 address.

-6 forced use of IPV6 address.

- b use batch mode (transfer password or phrase is not asked during transfer)

- C When using this parameter, ssh The protocol opens the compression option.

- P Specifies the port of the remote host. Note that is the capital letter "P".

- R recursively replicates data within a folder. This option is used in the Copy folder.

- P preserves the original file's modification time, access time, and access rights.

- Q The transfer progress bar is not displayed.

- v show the output in detail. SCP and ssh (1) will display debugging information for the entire process. This information is used to debug connections, authentication, and configuration issues.

- C cipher The data transfer is encrypted with cipher , and this option is passed directly to ssh .

- F Ssh_config Specifies an alternative ssh configuration file that is passed directly to the ssh .

- I. Identity_file The key file used to read the transfer from the specified file, which is passed directly to ssh .

- L Limit Limit the bandwidth that users can use to kbit/s as the unit.

- o ssh_option If you are accustomed to using ssh_config (5) the method of parameter passing in the

- S program Specifies the program that is used to encrypt the transfer. This program must be able to understand the options for ssh (1) .

iv. Examples of use of SCP commands

1 , copying files from a local host (folder) to a remote host

the command format is ( - R parameters for recursive replication folders):

SCP (–r) local_file [email Protected]_ip:remote_folder

Example 1 :

[[Email protected] ~] #scp/tmp/temp.txt [email protected]:/tmp/temp.txt

Description: The local host file The /tmp/temp.txt is copied to the/ TMP folder on the remote host 192.168.1.2 (the remote host user is root)

Example 2 :

[[Email protected] ~] #scp –r/tmp [email protected]:/tmp

Description: The local host folder All files in/tmp are copied recursively to the/ tmp folder on the remote host 192.168.1.2 (the remote host user is Root )

2 , copying files (clips) from a remote host to a local host

SCP (–r) [Email Protected]_ip:remote_folder local_file

3 , copying files between two remote hosts (clip)

SCP (–r) [Email protected]_ip:remote_folder

Five, the use of the process may encounter problems and solutions

1 , the "license denied" issue caused by user file permissions

Example:

username1 is the local machine username2 is a remote

# scp/home/files [email protected]:/home/files2 [email protected] ' s password:
SCP:/home/files2:permission denied

Description: This is because the user of the remote host username2 no /home/files2 . Write permission for the file. You can use the following workarounds:

Execute on local server:

#scp/home/files [Email protected]:/tmp

Then execute on the remote server:

#mv/tmp/files/home/files

or you can configure it on a remote host /home folder adds user username2 the Write permission.

2 ,ssh "License denied" issue due to user rights configuration in the Protocol

Example:

#scp/www/xinpindao [email protected]:/tmp Remote machine User Root

[email protected]' s Password:

Permission denied, please try again.

Description: This is due to ssh service shutdown root the user's logon rights are caused. You can use the following workarounds:

to modify root ssh access, which modifies the /etc/ssh/sshd_config file Permitrootlogin no to permitrootlogin Yesandthen Restart the SSH service

#/etc/init.d/sshd restart

Reprint Address: http://myblog.jyc.edu.cn/?p=151

(go) Use SCP commands to pass files between Linux operating systems