Changing hostname/computer name on Ubuntu

At work I changed from “ricky-desktop” to “ricky-work” (to avoid confusion with my home PC) and now I’m going to change it again to “rickyw” to avoid redundancy (everyone at work [who actually looks] sees me as “ricky-work” which is redundant. Might as well change it to my username.)

Edit /etc/hostname
hostname rickyw
Edit /etc/hosts
service hostname.sh start
I think that’s all, but I may be wrong. (Why is this process so complicated?)

Any existing windows that you have open will have their title appended with “on oldname” because they were started with the old hostname. Any new windows come out normally, it seems.

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