Chapter 9. Process RelationshipsSection 9.1. IntroductionSection 9.2. Terminal LoginsSection 9.3. Network LoginsSection 9.4. Process GroupsSection 9.5. SessionsSection 9.6. Controlling TerminalSection 9.7. tcgetpgrp, tcsetpgrp, and tcgetsid FunctionsSection 9.8. Job ControlSection 9.9. Shell Execution of ProgramsSection 9.10. Orphaned Process GroupsSection 9.11. FreeBSD ImplementationSection 9.12. SummaryExercises