Best way to use multiple SSH private keys on one client

Fri, 02/01/2019

Many time you will find something like this to put into your ssh/config file,

Host myshortname realname.example.com
    HostName realname.example.com
    IdentityFile ~/.ssh/realname_rsa # private key for realname
    User remoteusername

Host myother realname2.example.org
    HostName realname2.example.org
    IdentityFile ~/.ssh/realname2_rsa  # different private key for realname2
    User remoteusername

but there is simpler solution, you can just add identity files and they will be tried one by one and you don't have to worry much about config.

$ cat ~/.ssh/config
IdentityFile ~/.ssh/id_rsa
IdentityFile ~/.ssh/some_key
IdentityFile ~/.ssh/other_key