Handling multiple SSH keys in your SSH config
I've been frustrated lately trying to juggle multiple SSH keys on various servers I'm on. If I've got one set up to the Subversion server at work, then I can't authenticate with github. If I let github be the server that I have a private key for, then I'm entering a password whenever I do an "svn up" on the work server.
I played with ssh-agent, but that seemed to require starting up a process every time I logged in, and I couldn't get it running in my .bashrc, and it required manually adding keys.
And then I stumbled across this article that introduced me to the IdentityFile argument. Now I have this in my ~/.ssh/config and all is well with the world.
Host github.com HostName github.com IdentityFile ~/.ssh/github_rsa User petdance