(n+1)th post on this tip … Here for my quick find.
- Generate Authentication key
- Copy public key to remote site
- Login with no password.
- Generate Authentication Key
➜ ~ ssh-keygen Generating public/private rsa key pair. Enter file in which to save the key (/Users/nram/.ssh/id_rsa): /Users/nram/.ssh/id_rsa already exists. Overwrite (y/n)? y Enter passphrase (empty for no passphrase): Enter same passphrase again: Your identification has been saved in /Users/nram/.ssh/id_rsa. Your public key has been saved in /Users/nram/.ssh/id_rsa.pub. The key fingerprint is: SHA256:TyjWWbnKVntdd0ZvCEfQ5wZqQpk/+T3iLxed+GK0Ok0 nram@Ramesh-Natarajan The key's randomart image is: +---[RSA 3072]----+ | o.o. | | +. .o .| | .o..o.+.| | . +..*o o+| | o S +o oooX| | . o = . E.B=| | + o * = o| | . o B o | | .+ =. | +----[SHA256]-----+ ➜ ~
2. Copy the public key to remote site
➜ ~ ssh-copy-id -i ~/.ssh/id_rsa.pub nram@buzz /usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/Users/nram/.ssh/id_rsa.pub" /usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed /usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keys nram@buzz's password: ***** Number of key(s) added: 1 Now try logging into the machine, with: "ssh 'nram@buzz'" and check to make sure that only the key(s) you wanted were added.
3. Login to remote system.
➜ ~ ssh nram@buzz Welcome to Ubuntu 20.04.2 LTS (GNU/Linux 5.8.0-41-generic x86_64) Last login: Thu Feb 4 16:16:42 2021 from 192.168.2.179