As someone who uses SSH a lot, I need to remember a bunch of different usernames, identity files and even one non-standard SSH port.
It can sometimes be a bit of a hassle, especially if I need to use a specific identity file or other such, and then need to subsequently remember the pathname to it and all that.
But lo and behold, there’s actually something that can do all of this for you!
Why didn’t anyone ever tell me about ssh’s config file?
On unixy systems, your personal SSH configuration goes into ~/.ssh/config
By plugging specific things into the file, you can automate most of your SSH experience.
Here’s an example:
Let’s say you often connect to a server like this:
ssh firstname.lastname@example.org -p 1234
What if you just had to say…
Well, put the following definition into the ssh config file:
Host example.com User test Port 1234
And now it works just like that. No need to remember which port to use or which user name to use. Just
ssh example.com and off you go.
Simple and makes your life a bit easier if you work a lot with SSH.
This is only just scratching the surface of what options are available. The manpage contains a quite handy list of possible options: