How to connect to an SSH server without password?

To connect to an SSH server without password, you can use public key authentication. The steps to set this up are as follows:

1. Generate a public/private key pair on your local machine using the ssh-keygen command.

1. Copy the public key to the server using the ssh-copy-id command. This will add your public key to the authorized\_keys file on the server.

1. Set the permissions for the authorized\_keys file using the chmod command. It should have permissions of 600.

1. Edit the SSH configuration file on your local machine (usually located at /etc/ssh/ssh\_config or ~/.ssh/config) and add the following lines:

Host IdentityFile ~/.ssh/id\_rsa Replace with the hostname or IP address of the server.

1. Save and exit the file.

Now, when you connect to the server using the ssh command, you should be authenticated without having to enter a password.