Nothing. Linus doesn't personally do coding on the kernel, he has a team who do that and he oversees it and makes the hard decisions.
There are others who will take his place and the work will continue.
If somehow the entire kernel team shut down, Google, Samsung or some other large corporation would take it over and continue development because at this point many, many, many servers, phones, smart devices, iot, and other appliances rely on the Linux kernel to function.
A number of candidates will create their own forks and there will be a long Game of Thrones style war between different factions. After couple of weeks each distro will choose the fork they will make the default one and people will split into warring factions. After that we will enter a nuclear winter style period lasting couple of years during which 90% of post on Lemmy will be just shitposting the rival forks. After a decade or two of backstabbing, dirty politics and other drama new dictator will be selected and all will be back to normal.
There will not be a Linus 2, but rather there will be a peaceful transfer of "power".
Linus is not the Benevolent Dictator For Life of the Linux Kernel.
Linus has already stepped away from developing the Kernel. He did this after an incident to work on his professionalism & mannerisms towards people. Kernel development did not stop. Linus does not approve and merge every patch into the Kernel.
Rather it is more likely that the Lead Maintainer/Developer changes to Greg Kroah-Hartmon, and the project does not skip a beat.
Rest assured with something as important as the Linux Kernel: development will keep going.
https://en.wikipedia.org/wiki/Bus_factor is a thing that any GOOD project or IT department considers. How many of your staff can you afford to lose if they all happen to be travelling in the same bus, on their way to eat at the same place for lunch when an asteroid inevitably punches through said bus and/or diner.
'Hit by an asteroid' is a little unrealistic. Sentenced to prison for 15 to Life has happened in the Open Source community at least once before. The project I linked to had a Bus Factor of about one. It's now 'old code using outdated APIs' and is considered obsolete.
I've personally seen legal and criminal issues for a single individual cripple IT departments before, meaning their bus factor was also way too low. I've been on trips that have been rudely interrupted by screaming executives when I came down out of the mountains into cell range because I was the only bus factor left on certain systems. Natural disaster, such as hurricanes, wildfires, and floods are very serious existential threats to even the largest of organizations.
Since Linux seems to be a good project, I can't imagine that the discussion hasn't been had, in public or in private. Millions of individuals and dozens upon dozens of big corporations depend on Linux, Open source and otherwise. If the bus comes for core maintainers or project leaders we have at least SOME backup.
For a moment I thought this post was about the LTT host. And was like they could replace him with any of his doppelgangers in the group and no one will notice.
The role of Linus being a stubborn decision maker will be handed over to a competent close one to Linus. He is not letting any of the "sociopolitical" experts take over the tech role that Linux plays critical to servers, security users, militaries, governments and activists.
Everyone is making jokes but the thought has occurred to me:
Yes, we have an organisation in place that is ready to replace him. But, from what I understand, he IS the benevolent dictator, and he has used his power a few times to stop some changes that otherwise would be in the kernel right now. And I think that's a good thing.
I’m training a code and language model to write Linux kernel code and provide snarky comments, of course all based on Linus’s extensive commit history.
There shouldn't be another Linus. The model of a single maintainer holding so much importance is fundamentally flawed, especially for a project with the size and importance of Linux. Responsibilities and decision making should be distributed among stakeholders and volunteers. It will take time to rebuild around that sort of structure.
I've also heard tell that the linux-kernel mailing list has become extremely toxic, especially to newcomers. A professor that I have a lot of respect for has stopped teaching his kernel drivers course because one of his students received death threats related to her involvement. If a change in the tenor doesn't happen, less and less of the fresh blood that Linux needs will join.
The top secret classified, for your eyes only papers will finally be revealed and we will find out that...
we have all been using BETAMAX this whole time, not Linux. O_o
There will be so many forks trying to continue a Kernel based on linux and i think a few will succeeded! We may use arch kernel or debian kernel in the future.