Scp copying between Linux hosts without entering a password

Copy the ssh public key file of your local host user to the ~/.ssh/authorized_keys file of the remote host user, assuming the local host linux (10.1.1.1), remote host linux (10.1.1.2)

First, the user in the linux100 host

Run

#ssh-keygen -t rsa

Results

Generating public/private rsa key pair.

Enter file in which to save the key (/home/.username/ssh/id_rsa):#Enter

Enter passphrase (empty for no passphrase):#Enter

Enter same passphrase again:#Enter

Your identification has Been saved in /home/.username /.ssh/id_rsa.

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

< BR>The key fingerprint is:

38:25:c1:4d:5d:d3:89:bb:46:67:bf:52:af:c3:17:0c username@localhost

Generating RSA keys:

Key generation complete.

Two files will be generated in the user directory ~/.ssh/, id_rsa , id_rsa.pub

Second, put linux (10.1.1.1) on the host The id_rsa.pub file is copied to the .ssh directory under the root user directory of the linux (10.1.1.2) host, and renamed to authorized_keys

:

/Root/.ssh/authorized_keys

This will copy the file to linux (10.1.1.2) on the linux100 host and will not prompt for the password, directly copied. vice versa!

Three, copy file or directory command:

Copy files:

(1) Copy local files to remote

scp file [email protected]: remote path

(2)copy files from remote to local

scp -- [email protected]: Filename local path

Copy directory:

(1) Copy local directory to remote

scp -r directory [email protected]: remote path

(2) Copy the directory back to the local remote

scp -r [email protected] .1.2: Directory name local path.