Opbzil

THis allows you to connect to a server without needing to provide a password

Basic command to create a ssh key is

 ssh-keygen

a more compley example is

 ssh-keygen -f .ssh/key-with-pass

the -f option allows you to save it with a different name rather than the default id

THe command to share is

 ssh-copy-id -i .ssh/key-with-pass.pub user@remotehost

If you create a key with a non default name you have to connect to server using

ssh -i .ssh/key-with-pass user@remotehost

You can create a client based config file for ssh so that you can use differnt keys with different server. THe file is called ~/.ssh/config

Here is a sample of one:

[user@host ~]$ cat ~/.ssh/config
host servera
     HostName                      servera.example.com
     User                          usera
     IdentityFile                  ~/.ssh/id_rsa_servera

host serverb
     HostName                      serverb.example.com
     User                          userb
     IdentityFile                  ~/.ssh/id_rsa_serverb