AIX was one of the earliest Unices to include a proper service manager, the SRC back in 1990. AT&T Unix System 5 had the too-often-forgotten SAF in 1989 with a

AIX was one of the earliest Unices to include a proper service manager, the SRC back in 1990. AT&T Unix System 5 had the too-often-forgotten SAF in 1989 with a lot of things that look familiar to a modern eye. But it did not extend beyond the "port" model of ttymon and listen. The SRC did. AIX was also, hand in hand with the SRC, one of the earliest Unices to do away with run levels. With the SRC present, there was only the one run level. Everything else became reserved. Some people erroneously think things to be novelties that AIX was doing 30 years ago. * http://jdebp.uk./FGA/unix-service-access-facility.html http://jdebp.uk./FGA/unix-service-access-facility.html * http://jdebp.uk./FGA/run-levels-are-history.html http://jdebp.uk./FGA/run-levels-are-history.html * http://jdebp.uk./FGA/inittab-is-history.html http://jdebp.uk./FGA/inittab-is-history.html