How to update UE4 in

Hello,
I have compiled the game engine from source for , but it was a long time ago. I now have an outdated version of UE (UE 4.8)
In windows one would simply click on ‘update’ in the launcher and be done with it.
In , however, there is no launcher.
So how do i update it?
Do i really have to compile it from source every time theres a new update?

For right now yes, until we get static builds from unreal, Though I am considering building an appImage that you can just download if we are allowed to distribute compiled builds.

The only way you would be allowed to distribute it would be guarded by the engines EULA. Check out the sharing hub (A new, community-hosted Unreal Engine Wiki - Announcements - Unreal Engine Forums) you could use the same idea but with download from a gtihub engine fork.