How do I know what bit my processor is Ubuntu?

Related questions

1. What is Ubuntu Bionic?
2. What is the stable version of Ubuntu?
3. How do I know what kernel I am running?
4. What is the difference between Ubuntu 32 and 64 bit?
5. How much space does Ubuntu 18.04 take?
6. What is my Ubuntu version?
7. What is Ubuntu disco?
8. How do I know my Ubuntu architecture?
9. What kernel does Ubuntu 16.04 use?

Tags

1. #ubuntu
2. #section
3. #software
4. #processor
5. #system
6. #whether
7. #including
8. #detail
9. #running
10. #under
11. #settings
12. #search
13. #every
14. #details
15. #version
16. #lib32
17. #center