SSH login on linux remote server password free

When the local client SSH to the remote server, each time you enter a user name and password, if you do not want to enter the password every time you can use the following actions.

First, the local client input Ssh-keygen

[Email protected] ~]$Ssh-keygenGenerating Public/private RSA key pair. Enterfile inch whichTo save the key (/home/keysystem/.SSH/id_rsa): Created directory'/home/keysystem/.ssh'. Enter Passphrase (Empty forno passphrase): Enter same passphrase Again:your identification has been savedinch/home/keysystem/.SSH/Id_rsa. Your public key has been savedinch/home/keysystem/.SSH/id_rsa.pub.The Key fingerprint is:af:a4:d5:4d: the: 3c: -: in: EA:Panax Notoginseng: -: 0c:Wuyi: 3b:ba:2b [email protected]the key's Randomart image is:+--[RSA2048]----+| .  +o.           || + O.          || O.         =  || . + + .        || S.  X.         ||        o = = | |       o o O | | + .   E.      || .  .    .. |+-----------------+[[Email protected]~]$

To generate a public private key pair, you can enter into the ~/.SSH directory to view the generated public private key pair.

[Email protected] ~]$ CD ~/. ssh/[[email protected]. SSH] $ ll-81 keysystem keysystem  413 Dec  4:12  id_rsa.pub11675 Dec  4:  id_ Rsa[[email protected]. SSH

Then execute ssh-copy-id [email protected], where Dzy is the user name of the remote host and 172.20.16.42 the IP address of the remote server.

ssh-copy-ID [email protected]172.20. 14.42

SSH login on linux remote server password free