What is the use of learning Linux?

Related questions

1. Is Windows Linux or Unix?
2. Why is command line interface useful?
3. Is Linux hard to use?
4. Is Linux command line bash?
5. What is term environment variable in Linux?
6. What is Linux terminal emulator?
7. Why we use terminal in Linux?
8. What is $@ in Linux?
9. How many terminals are there in Linux?
10. What is SSH on Linux?

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