[mpapi]

A favorite .ssh/config feature of mine is pattern matching on hostnames with "?" and "*". So you can say something like:

    Host bos-??
    HostName %h.mydomain.com
    IdentityFile ~/.ssh/my-boston-key

    Host nyc-??
    HostName %h.mydomain2.com
    IdentityFile ~/.ssh/my-nyc-key

and log in with e.g. "ssh bos-14".

[gatehouse]

Yeah, I use a similar thing for ec2:

    Host *.amazonaws.com
      User ec2-user
      IdentityFile ...

And then it is just

    ssh ec2-X-X-X-X.compute-1.amazonaws.com

[voltagex_]

This seems to be relatively new. It doesn't work on a couple of boxes I tried.

Thanks though, I didn't know about the ?? syntax.

[mpapi]

I found references to it going back to 2008, and the git repo that has my dotfiles says I've been using it (in Linux) for 3 or so years. Maybe it depends on the OS/distro.

The patterns are similar to shell globs: * matches zero or more characters, ? matches exactly one.