I often copy hostname from chrome address bar to shell, but it always with some prefix like “http://” .

Search “chrome copy without http” in Google and you will 208,000,000 results, there is a bug reported in tracker but status is “Won’t fix”.

Luckily some body developed this extension:

https://chrome.google.com/webstore/detail/hostcopy/ebnjnkfienhcidbgmifkjkkidheihcpj

there are some others has same function, you can try and choose your favorite.