Change terminal user name

Hey the other day I noticed my terminal user name (I think) has changed to ip-189-241 and I have no idea why... it used to be Mark_Mac... hence the name of my computer... any idea how to change this? and what exactly does this affect anyways?

That is your computer (host) name. You can change it under System Preferences > Sharing

Thanks for the reply, I do see where to change it but it already says Mark_Mac. whereas terminal still says ip-189-241

Sounds like it's passed by your DHCP server.

possibly, I am on a college network. do you think that would affect it?

yep, mine changes when I connect to the corporate network at work