In days of yore
In days of yore I helped develop the initial version of OS/360. systemd
corresponds to the portion of OS/360 known as the Master Scheduler. All of the
rest of OS/360 had to conform to the specs laid down by the Master Scheduler
just as systemd tries to force the rest of GNU/Linux to conform to the systemd
specs. The difference is that the Master Scheduler was designed before the rest
of OS/360 and systemd is an add-on afterthought. That is why systemd is such a
design mess and why the systemd designers rail at the stupidity of
other GNU/Linux designers for not anticipating the systemd specs 10 years ago.
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Steve Stites