What is Gnome shell in Ubuntu?

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Tags

1. #graphical
2. #formerly
3. #shell
4. #distribution
5. #starting
6. #distributed
7. #source
8. #rather
9. #linux
10. #ubuntu
11. #desktop
12. #became
13. #gnome
14. #remix
15. #environment
16. #official
17. #flavour
18. #discontinued
19. #system
20. #unity
21. #version
22. #operating
23. #software