I feel stupid. What are the exact commands to start running jobs on a headless server?

Example: Thousands of Debian/Ubuntu sysadmins would like to install BOINC and do Rosetta@Home jobs.

We're not so much concerned with RPC crap as how to basically get going from the viewpoint of SSH. So which apt-get package should we use, what systemd commands are involved, how do we configure the tasks, what do? What about RHEL/Centos? OpenWrt?

Can we fix the tooling so it is closer to "Just Works" out of the box?

Be sure you have the permission of the owner of the machines to run.

Here is some info. for you to chew on:
Installing BOINC (including a tiny section on Docker!)
Creating custom installers

Once you get it installed, you can use the command line to attach to projects.
The program (boinccmd) provides a command-line interface to a running BOINC client

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Rosetta Moderator: Mod.Sense

Fedora / CentOS / RHEL
# means run the command as root
$ means run the command as normal user

Install BOINC

# dnf install boinc-client

(if CentOS RHEL before such command run # dnf install epel-release)

# systemctl enable boinc-client
# systemctl start boinc-client

let's remove the password to communicate to the boinc service

# echo > /var/lib/boinc/gui_rpc_auth.cfg
# systemctl restart boinc-client

get your Rosetta weak authentication key from https://boinc.bakerlab.org/rosetta/weak_auth.php

$ boinccmd --project_attach https://boinc.bakerlab.org/rosetta/ weak_key

If you want to push CPU to 100%, edit

/var/lib/boinc/global_prefs.xml

and set <cpu_usage_limit> to 100%

If you want to increase also RAM usage edit values

<ram_max_used_busy_pct>
<ram_max_used_idle_pct>

Don't forget to restart the service to load the new preferences

# systemctl restart boinc-client

Other commands I would suggest to run are

$ boinccmd --set_network_mode always
$ boinccmd --set_run_mode always

I also found this one useful:

apt install boinctui

I wish there existed some volunteer computing project for OpenWrt and if more gave jobs for Android. There are/were some open source BOINC projects, but I'm not sure about their hardware requirements: I found Lhc@home/SixTrack, DENIS, Milkyway@home, Enigma@home, ATLAS@home, RakeSearch, RNA world Infernal, Einstein@home and SETI. I think E@h and SETI even have Debian packages, for others you'd need to jump through a few hoops.

As most Rosetta@home tasks take up 1.5GB RAM and at least that much HDD, I don't think you could find a router easaly to run it on anyway.