How can I save SSH Bookmarks in Terminal?
I'm not sure what SSH bookmarks are, but you might find the SSH config file useful. I would advocate it over the alias approach.

This option will work in all terminal emulators, and all shells (e.g. zsh instead of bash), and even other apps that use SSH (e.g. rsync, scp, git). Also, if you synchronise your dotfiles (e.g. via a github repository), your bookmarks/alias can be shared across machines.

You can store host specific settings (and aliases) in:

~/.ssh/config


Instead of doing:

ssh admin@mywebsite.com


You could type:

ssh mw


If you added the following to your SSH config:

Host mw
Hostname mywebsite.com
User admin


You could also setup passwordless SSH and add the location of your identify file here. A bit more secure than storing passwords, and quicker than typing it out.

For more info about SSH config do:

man ssh_config