SSH aliases and Git
If you use SSH from the command line, you will be used to typing something like this into the terminal:
You are probably also aware of the
~/.ssh directory where all your private keys live. But did you also know that you can save aliases for servers in the same directory so you don’t have to remember usernames, domains, or IP addresses when you log in? First you need to create a file called
~/.ssh/config. Then you can enter the details for each server:
Host foo HostName example.com User john Host bar HostName 192.168.1.1 Port 22000 User john IdentityFile ~/.ssh/bar_rsa
Then you can log in using the alias:
But wait. There’s more. If you use Git, you can create aliases for your Git SSH accounts and use them when setting up remotes.
Host github HostName github.com User git IdentityFile ~/.ssh/github_rsa
And where you would have used:
git remote add origin firstname.lastname@example.org:foo/bar.git
You can now use the easier to remember:
git remote add origin github:foo/bar.git
In fact, you can use these aliases with anything that sends data via SSH, including scp and rsync. Think of all the time you can save now you never have to remember another domain or IP address again.