So, I want to make changes on system.config. But when I type nano /etc/systemd/system.conf says File '/etc/systemd/system.conf' is unwritable.
I want to make this change because I want to put memory usage limits on some services that I use. I tried added the line MemoryMax=100M in a .service, but does not seem to have any limit on the service. I read a little and people say to edit the system.config to make this changes.
It's possible? If yes: how?