Please don't say "application". It scares me.

What needs to be done is fairly simple:

1. start the browser and load the login page

2. wait for the login page to load

3. press the "login" button on the page (note: the browser has saved the username and password, so there is no need to enter them every time).

What I'm trying to determine now is how much of this can be done in a Bash script? I assume I'm on my own with this, but if anybody who knows an answer wants to offer any guidance, it will be welcome.