SSH Password-free login under Linux

Suppose there are two hosts, A and B:

To achieve the effect:
A host SSH login B host does not need to enter a password;
Encryption mode RSA|DSA can be selected, the default RSA

Practice:
1. Login a Host
2, Ssh-keygen-t [RSA|DSA], will generate the private key file and public key file Id_rsa,id_rsa.pub or id_dsa,id_dsa.pub
3. Copy the. pub file to the. SSH directory of Host B, and cat id_rsa.pub >> ~/.ssh/authorized_keys
4, test: From a host login B host of the target account, no longer require a password;

Copyright NOTICE: This article for Bo Master original article, without Bo Master permission not reproduced.

SSH Password-free login under Linux