What is the purpose of a Linux package manager?

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Tags

1. #contain
2. #software
3. #vendor
4. #number
5. #necessary
6. #description
7. #files
8. #metadata
9. #distributions
10. #packages
11. #purpose
12. #version
13. #dependencies
14. #deals
15. #manager
16. #archive
17. #package
18. #checksum
19. #properly