What are semaphores in Linux?

Related questions

1. What is PR in Linux?
2. What is MMAP in Linux?
3. What is ZFS file data?
4. What is PMAP command?
5. What is proc directory in Linux?
6. What is IPC and its types?
7. What is VSZ in PS?
8. What is RSS memory in Linux?
9. What is shared memory in Linux?
10. What is Linux niceness?

Tags

1. #binary
2. #multiple
3. #technique
4. #compete
5. #synchronizing
6. #activities
7. #especially
8. #values
9. #resources
10. #processes
11. #semaphores
12. #additional
13. #system
14. #programming
15. #which
16. #coordinating
17. #systems
18. #operating