ssh

• Per-host SSH client configuration options

  You can set per-host configuration options in ~/.ssh/config by specifying Host hostname, followed by host-specific options. It is possible to set the private key and the user (among many other settings) on a per-host basis.

  Here’s an example config file:

  Host abhijeet
  User admin
  IdentityFile ~/.ssh/admin.id_dsa
  

  or:

  Host somehost
  User dev
  HostName example.com
  IdentityFile ~/.ssh/dev.id_dsa
  

• Add public key to remote server:

  ssh-copy-id -i ~/.ssh/id_rsa.pub username@hostname
  

  Usage: Copy public key to remote server