As stated in Part 1, pgAgent is going away, so I'm focussing on setting up pg_timetable as similar to pgAgent that I can.
For this second part, I'm going to go over how to configure pg_timetable as a service on Linux.
A heads up, i really loved the pgAgent UI in pgAdmin so I'm working on one for pg_timetable which is mostly patterned after the pgAgent one. You can see the pull request work in progress pg_timetable UI for pgAdmin. I'm in the middle of cleaning up some loose ends before it is ready for commit.