The Grumpy Editor's guide to surviving the systemd debate

Interchangeability and portability never truly worked on init like sysvinit for Linux kernel as evident of numerous features exposed by systemd, different i.e. non standard implementations of scripts on main distribution. Slackware retained the old BSD init and never used sysvint.

UNIX system virtually abandoned sysvint knowing a core part like init or specifically a system management have to be designed for their own kernels.