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3 Steps to Perform SSH Login Without Password Using ssh-keygen & ssh-copy-id

3 Steps to Perform SSH Login Without Password Using ssh-keygen & ssh-copy-id
by Ramesh Natarajan on November 20, 2008 You can login to a remote Linux server without entering password in 3 simple steps using ssky-keygen and ssh-copy-id as explained in this article. ssh-keygen creates the public and private keys. ssh-copy-id copies the local-host’s public key to the remote-host’s authorized_keys file. ssh-copy-id also assigns proper permission to the remote-host’s home, ~/.ssh, and ~/.ssh/authorized_keys. This article also explains 3 minor annoyances of using ssh-copy-id and how to use ssh-copy-id along with ssh-agent. Step 1: Create public and private keys using ssh-key-gen on local-host jsmith@local-host$ [Note: You are on local-host here] jsmith@local-host$ ssh-keygen Generating public/private rsa key pair. Step 2: Copy the public key to remote-host using ssh-copy-id Note: ssh-copy-id appends the keys to the remote-host’s .ssh/authorized_key. Step 3: Login to remote-host without entering the password Using ssh-copy-id along with the ssh-add/ssh-agent

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