SCP replicates between Linux hosts without entering a password

Copy your local host user's SSH public key file to the remote host user's ~/.ssh/authorized_keys file, assuming the local host Linux (10.1.1.1), remote host Linux (10.1.1.2)

One, the user in the LINUX100 host

Run

#ssh-keygen-t RSA

The results are as follows

Generating public/private RSA key pair.

Enter file in which to save the key (/HOME/.USERNAME/SSH/ID_RSA): #回车

Enter passphrase (empty for no passphrase): #回车

Enter same passphrase again: #回车

Your identification has been saved In/home/.username/.ssh/id_rsa.

Your public key has been saved In/home/.username/.ssh/id_rsa.pub.

The key fingerprint is:

38:25:c1:4d:5d:d3:89:bb:46:67:bf:52:af:c3:17:0c [email protected]

Generating RSA keys:

Key generation complete.

Will generate two files in the user directory ~/.ssh/, id_rsa,id_rsa.pub

Second, copy the Id_rsa.pub file on the Linux (10.1.1.1) host to the. SSH directory under the root user directory of the Linux (10.1.1.2) host and rename it to Authorized_keys

That

/root/.ssh/authorized_keys

This allows the use of the SCP command on the linux100 host to copy files to Linux (10.1.1.2) will not prompt for a password, directly copied. Vice versa!

Third, copy the file or directory command:

To copy a file:

(1) Copy Local files to remote

SCP file name [email protected]: remote path

(2) Copy files back to local from remote

SCP [email protected]: File name Local path

To copy a directory:

(1) Copy the local directory to the remote

Scp-r directory name [email protected]: remote path

(2) Copy the directory back to local from remote

Scp-r [email protected]: Directory name local path.

SCP replicates between Linux hosts without entering a password